Financial Accounting

The big picture

Two companies hand you a single page each. One says "we had a great year." The other says revenue of 4,180,000, expenses of 3,910,000, and cash of 212,000 against 340,000 of bills due within ninety days. Only one of those pages lets you decide anything. Accounting is the discipline that produces the second kind of page, and it is far older and more deliberate than most people assume.

Accounting is the system a business uses to identify, record, summarize, and report its economic activity in money terms. It is often called the language of business because it turns the messy reality of a company, its sales, purchases, loans, and wages, into a small set of standardized reports that anyone can read. Why does this matter? Because owners, lenders, and managers all have to make money decisions, and they cannot make good ones without trustworthy numbers. The whole subject exists to serve one purpose: to give useful information to the people who make decisions about the business.

The two branches of accounting

Accounting splits into two branches aimed at different audiences. Financial accounting, the subject of this course, produces general-purpose reports for people outside the company: investors, lenders, suppliers, and regulators. Because outsiders cannot walk in and inspect the business, these reports follow shared rules so one company's numbers can be trusted and compared with another's. In the United States those rules are Generally Accepted Accounting Principles (GAAP), maintained by the Financial Accounting Standards Board. Managerial accounting, by contrast, produces detailed internal reports for managers, such as budgets and product-cost analyses, and follows no fixed external rulebook because the audience is inside the company.

Key idea: Financial accounting reports outward to strangers under GAAP; managerial accounting reports inward to managers with no required format.

Who writes the rules, and the GAAP-IFRS split

This course teaches United States GAAP conventions, and it is worth being clear from the start about what that means and where the rest of the world differs.

In the United States, the Financial Accounting Standards Board (FASB), a private-sector body, writes GAAP and publishes it as the Accounting Standards Codification. The Securities and Exchange Commission (SEC) has statutory authority over the financial reporting of public companies and recognises FASB standards, which is why a company listed on a U.S. exchange files audited GAAP statements the public can read. Outside the United States, more than 140 jurisdictions require or permit International Financial Reporting Standards (IFRS), written by the International Accounting Standards Board under the IFRS Foundation.

The two systems agree on nearly everything in this course: the accounting equation, double entry, accrual recognition, and the four statements are the same in both. They differ on specific measurement and presentation questions, and this course flags those differences as they arise. Three examples give the flavour. Under IFRS a company may choose to revalue property, plant, and equipment to fair value; under U.S. GAAP those assets stay at historical cost less depreciation. IFRS prohibits the LIFO inventory method, which U.S. GAAP permits. IFRS calls the balance sheet the statement of financial position and often lists non-current assets first, while U.S. practice leads with the most liquid items.

One more framing note before the mechanics start. This course teaches how the system works and how to read what it produces. It is education, not professional accounting, audit, or tax advice, and real reporting decisions belong with a qualified accountant who knows the entity and the jurisdiction.

Key idea: FASB writes U.S. GAAP and the IASB writes IFRS; they agree on the framework taught here and differ on specific measurement and presentation rules.

What makes information useful

Standard setters do not write rules at random. Both FASB and the IASB work from a conceptual framework that names the qualities decision-useful information must have, and knowing them explains why many later rules look the way they do.

Two qualities are treated as fundamental. Information must be relevant, meaning capable of making a difference to a decision - it has predictive value, confirmatory value, or both, and it is material enough to matter. And it must be a faithful representation of what it purports to describe, which means complete, neutral, and free from error. Neutral is the demanding one: the numbers are not there to make management look good.

Four further qualities enhance usefulness. Comparability lets you set this company beside another, or beside its own last year. Verifiability means independent observers could reach the same figure. Timeliness means the information arrives while it can still change a decision. Understandability means it is presented clearly for a reader with reasonable business knowledge - which is not the same as making it simple.

These qualities pull against each other, and much of standard setting is managing that tension. A perfectly verifiable figure that arrives eighteen months late is useless; a wonderfully relevant estimate that nobody can check is unreliable. Historical cost, for instance, wins on verifiability and loses on relevance, which is precisely the trade-off at the heart of the GAAP and IFRS disagreement about revaluation.

Key idea: Useful information must be relevant and faithfully represented, and comparability, verifiability, timeliness, and understandability improve it further.

Who uses the statements, and why

A financial statement is one of the standardized reports accounting produces, like the income statement or balance sheet. Different readers open them with different questions in mind.

• Investors and owners want to know whether the business is profitable and worth putting money into.
• Lenders and suppliers want to know whether the business can pay back what it owes.
• Managers use the numbers to run the business day to day and plan ahead.
• Governments and regulators use them to assess taxes and enforce the rules.

Key idea: The same set of statements answers many different questions depending on who is reading them.

The bedrock assumptions

To keep the information reliable, accountants agree on a few foundational ideas before a single number is recorded. The business entity assumption says the business is a separate "person" from its owner, so the owner's personal groceries never appear in the company's books. The monetary unit assumption says we record only things we can measure in money, so a talented staff or a loyal customer base, however valuable, is not booked as an asset.

The going concern assumption says we assume the business will keep operating into the foreseeable future, which is why we can spread the cost of a machine over the years it will be used rather than expensing it all at once. And the cost principle (historical cost) says assets are first recorded at what we actually paid, not at a hopeful market value.

Key idea: A handful of shared assumptions keep every company's numbers measurable, separate, and comparable.

Accrual versus cash basis

Most businesses use accrual accounting: revenue is recorded when it is earned and expenses when they are incurred, regardless of when cash actually changes hands. For example, if you finish a job in June but the customer pays in July, accrual accounting reports the revenue in June, when you did the work. That is different from cash-basis accounting, which records revenue and expenses only when cash moves. Accrual accounting gives a truer picture of performance because it matches effort to the period it happened, and under GAAP it is required for most companies. This whole course uses the accrual approach.

Key idea: Accrual accounting times income and expense to when the work happens, not when the cash moves, giving a fairer measure of performance.

Accrual and cash side by side: the numbers

The difference is easiest to see with one small business over two months. A consultant does 12,000 of work in June. Customers pay 7,000 of it in June and the remaining 5,000 in July. She incurs 4,000 of costs in June, paying 2,500 in June and 1,500 in July.

Measure	June	July	Two months
Accrual revenue	12,000	0	12,000
Accrual expenses	4,000	0	4,000
Accrual net income	8,000	0	8,000
Cash received	7,000	5,000	12,000
Cash paid	2,500	1,500	4,000
Cash-basis result	4,500	3,500	8,000

Work through it. Accrual June income is 12,000 minus 4,000, which equals 8,000, and July shows nothing at all because no work was done and no cost incurred. Cash basis reports 7,000 minus 2,500, which equals 4,500 in June, then 5,000 minus 1,500, which equals 3,500 in July. Over the two months both systems reach the same 8,000, because 4,500 plus 3,500 equals 8,000.

That last line is the whole point. Cash and accrual never disagree about the lifetime total; they disagree about which period the result belongs to. Accrual puts the 8,000 in the month the consultant actually did the work, which is what a reader trying to judge June's performance wants to know. Cash basis splits it across two months for reasons that have nothing to do with effort.

Cash basis is not therefore worthless. It is simple, it is impossible to manipulate through estimates, and United States tax rules permit many smaller businesses to use it for tax purposes even though GAAP requires accrual for general-purpose financial statements. A great many small firms consequently keep accrual books for their bank and file on a cash basis for tax, which is legitimate and is exactly why the two sets of numbers can differ.

Key idea: Cash and accrual reach the same lifetime total but assign it to different periods, and accrual assigns it to the period the work occurred.

Common wrong turns

• "Accounting is just bookkeeping." Bookkeeping is the recording step; accounting also summarizes, reports, and interprets so people can make decisions.
• "The point of accounting is to lower taxes." Taxes are one use, but the central purpose is decision-useful information for many users, and tax rules are often a separate system from GAAP.
• "Profit equals cash in the bank." Under accrual accounting a company can report a profit while its bank balance falls, because revenue is recorded before the cash arrives.
• "An expert team is an asset on the books." The monetary unit assumption keeps unmeasurable value off the statements even when it is real.
• "GAAP and IFRS are completely different systems." They share the equation, double entry, accrual recognition, and the four statements. They differ on specific measurement and presentation rules, such as revaluation of fixed assets and the use of LIFO.
• "Neutral means the company should look good." Neutrality in the conceptual framework means the opposite: the numbers must not be slanted to produce a predetermined impression.
• "Cash basis and accrual give different total profits." Over the life of the business they give the same total. They differ only in which period reports it.

Try it

A design studio completes 30,000 of work in March, collecting 18,000 in March and 12,000 in April. It incurs 11,000 of costs in March, paying 6,500 in March and 4,500 in April. (a) What is accrual net income for March and for April? (b) What is the cash-basis result for each month? (c) What is the two-month total under each method? (d) Which method better answers the question "how did March go," and why?

Answer: (a) March accrual income is 30,000 minus 11,000, which equals 19,000; April is 0, because no work was done and no cost incurred. (b) March cash is 18,000 minus 6,500, which equals 11,500; April cash is 12,000 minus 4,500, which equals 7,500. (c) Accrual totals 19,000 plus 0, which equals 19,000; cash totals 11,500 plus 7,500, which also equals 19,000. (d) Accrual, because it reports the full result of March's work in March instead of splitting it according to when clients happened to pay.

Recap

• Accounting identifies, records, summarizes, and reports economic activity to help people make decisions.
• Financial accounting serves outside users under GAAP; managerial accounting serves inside managers with no fixed rulebook.
• FASB writes U.S. GAAP under SEC oversight for public companies; the IASB writes IFRS, used in more than 140 jurisdictions.
• Useful information is relevant and faithfully represented, and gains from comparability, verifiability, timeliness, and understandability.
• Investors, lenders, managers, and governments each read the statements for different reasons.
• The entity, monetary unit, going concern, and cost assumptions keep the numbers reliable and comparable.
• Accrual accounting records revenue when earned and expenses when incurred, which this course uses throughout.
• Cash and accrual agree on lifetime totals and disagree on timing, and this material is education rather than professional advice.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Explain the importance of accounting and distinguish between financial and managerial accounting. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Identify users of accounting information and how they apply information. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe principles, assumptions, and concepts of accounting and their relationship to financial statements. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Financial Accounting Standards Board. (2018). Statement of Financial Accounting Concepts No. 8: Conceptual framework for financial reporting - Chapter 1, The objective of general purpose financial reporting, and Chapter 3, Qualitative characteristics of useful financial information. FASB. find source ↗
5. IFRS Foundation. (n.d.). Who uses IFRS Accounting Standards? Use around the world. IFRS Foundation. ifrs.org
6. Internal Revenue Service. (2022). Publication 538: Accounting periods and methods. U.S. Department of the Treasury. irs.gov
7. U.S. Securities and Exchange Commission. (n.d.). Beginners' guide to financial statements. Office of Investor Education and Advocacy. find source ↗

The big picture

Double-entry bookkeeping is roughly seven centuries old. It was already in use among Italian merchants when Luca Pacioli described it in print in 1494, and it has survived the arrival of the joint-stock company, the telegraph, the mainframe, and the spreadsheet essentially unchanged. Very few human inventions have that record, and the reason is one line of algebra.

Everything in financial accounting rests on one short formula, the accounting equation. It is the backbone of every balance sheet and the reason the books can be trusted to balance. Master this one line and the rest of the course becomes far easier, because every journal entry, ledger, and statement is just this equation in a different outfit.

Assets = Liabilities + Equity

The three parts

Assets are the economic resources a business owns or controls that are expected to bring future benefit, like cash in the bank, a delivery van, inventory on the shelf, or amounts customers still owe. A simple test: if it can help the business make money later, it is probably an asset. Liabilities are what the business owes to others, such as a bank loan, an unpaid supplier bill, or wages owed to staff.

A liability is something you owe, like a car loan or a credit-card balance. Equity (also called owners' equity or stockholders' equity) is the owners' claim on what is left after the debts are covered. Rearranged, equity is simply Assets minus Liabilities, the net worth of the business, much like the equity you have in a house is its value minus the mortgage.

Key idea: Assets are what the business has, liabilities are what it owes, and equity is what the owners would keep if every debt were paid.

Why it always balances

The equation is not a lucky coincidence; it is true by design. Everything a business owns had to be paid for by someone. Every dollar of assets was supplied either by a lender (creating a liability) or by the owners (creating equity). So the left side, which lists the resources, must always equal the right side, which lists the claims on those resources. This is exactly why the system is called double-entry bookkeeping: every transaction touches at least two accounts so the equation stays level.

Key idea: Assets always equal the claims against them, because every resource was financed by a creditor or an owner.

A worked example

Watch the equation stay balanced through the first few events of a lawn-care company, Maple Lawn Care, Inc. This is the running example we carry through the entire course.

Event	Assets	=	Liabilities	+	Equity
Owner invests 20,000 cash	+20,000 cash	=	0	+	+20,000 stock
Buy equipment for 9,000 cash	-9,000 cash, +9,000 equip	=	0	+	0
Buy 1,200 supplies on account	+1,200 supplies	=	+1,200 payable	+	0
Borrow 5,000 from the bank	+5,000 cash	=	+5,000 note	+	0

After these four events, total assets are 20,000 minus 9,000 plus 9,000 plus 1,200 plus 5,000, which equals 26,200. Total liabilities are 1,200 plus 5,000, which equals 6,200, and equity is 20,000. Now check the equation: 6,200 plus 20,000 equals 26,200. The two sides match, and they will keep matching after every transaction for the rest of the course.

Key idea: Each transaction changes the pieces but never breaks the equality, because every entry adjusts both sides by the same net amount.

The equation through a complete transaction cycle

Four events prove very little. Here is the same company through all eleven of its first-month transactions, with running totals after every single one. Revenue increases equity, expenses and dividends decrease it, so all of those land in the equity column.

#	Transaction	Effect	Assets	=	Liabilities	+	Equity
1	Owner invests 20,000 for stock	+20,000 cash; +20,000 common stock	20,000	=	0	+	20,000
2	Buy equipment for 9,000 cash	-9,000 cash; +9,000 equipment	20,000	=	0	+	20,000
3	Buy 1,200 supplies on account	+1,200 supplies; +1,200 payable	21,200	=	1,200	+	20,000
4	Borrow 5,000 on a note	+5,000 cash; +5,000 note	26,200	=	6,200	+	20,000
5	Services for 7,500 cash	+7,500 cash; +7,500 revenue	33,700	=	6,200	+	27,500
6	Services for 2,500 on account	+2,500 receivable; +2,500 revenue	36,200	=	6,200	+	30,000
7	Pay 3,000 wages	-3,000 cash; -3,000 equity (expense)	33,200	=	6,200	+	27,000
8	Pay 1,000 rent	-1,000 cash; -1,000 equity (expense)	32,200	=	6,200	+	26,000
9	Pay 800 on account	-800 cash; -800 payable	31,400	=	5,400	+	26,000
10	Collect 1,500 of receivable	+1,500 cash; -1,500 receivable	31,400	=	5,400	+	26,000
11	Pay 500 dividend	-500 cash; -500 equity (dividend)	30,900	=	5,400	+	25,500

Confirm the final line by rebuilding it from the individual accounts rather than trusting the running total. Cash is 20,000 minus 9,000 plus 5,000 plus 7,500 minus 3,000 minus 1,000 minus 800 plus 1,500 minus 500, which equals 19,700. Accounts receivable is 2,500 minus 1,500, which equals 1,000. Supplies are 1,200 and equipment is 9,000. Total assets are 19,700 plus 1,000 plus 1,200 plus 9,000, which equals 30,900.

On the other side, accounts payable is 1,200 minus 800, which equals 400, and the note payable is 5,000, so liabilities total 5,400. Equity is common stock 20,000, plus revenue of 7,500 plus 2,500, which is 10,000, less expenses of 3,000 plus 1,000, which is 4,000, less the 500 dividend: 20,000 plus 10,000 minus 4,000 minus 500 equals 25,500. Finally, 5,400 plus 25,500 equals 30,900, matching total assets exactly.

Two of those rows repay a second look because nothing happened on the right-hand side at all. Transaction 2 swapped one asset for another, and transaction 10 swapped a receivable for cash. Both left total assets, liabilities, and equity untouched. That is worth internalising: a business can be intensely busy for a week and change none of its three totals.

Adjustments keep the equation intact too

Period-end adjustments are not an exception. In the lesson on adjusting entries this company will record 800 of supplies used and 150 of depreciation. Both reduce assets and reduce equity through an expense, by identical amounts.

Assets become 19,700 cash plus 1,000 receivable plus 400 supplies plus 9,000 equipment less 150 accumulated depreciation, which equals 29,950. Equity becomes 25,500 minus 800 minus 150, which equals 24,550. Liabilities are unchanged at 5,400, and 5,400 plus 24,550 equals 29,950. The equation held through eleven transactions and two adjustments without a single exception, and that figure of 29,950 is the total that will appear on the finished balance sheet in Module 4.

Key idea: Running the equation forward through an entire cycle, transactions and adjustments alike, produces exactly the totals that will appear on the balance sheet.

How equity moves

Two things quietly grow equity and two things shrink it. Equity rises when owners invest and when the business earns revenue (income from selling goods or services). Equity falls when the business pays expenses (the costs of earning that revenue, like wages and rent) and when it pays dividends (cash returned to the owners). So the expanded equation reads: Assets = Liabilities + (Contributed capital + Revenues minus Expenses minus Dividends). Hold on to this; it is the bridge from the equation to the income statement in Module 4.

Key idea: Revenue and owner investment increase equity, while expenses and dividends decrease it, which links this equation to the income statement.

Solving for a missing amount

Because it is an equation, you can rearrange it to find any missing piece. If assets are 80,000 and equity is 55,000, then liabilities are 80,000 minus 55,000, which equals 25,000. If liabilities are 6,200 and equity is 20,000, then assets must be 26,200. Any two known parts give you the third.

Key idea: Knowing any two of assets, liabilities, and equity always lets you solve for the third by simple subtraction or addition.

Common wrong turns

• "Equity is the cash the owners can take out." Equity is a claim on net assets, not a pile of cash; much of it may be tied up in equipment and receivables.
• "Buying an asset for cash makes the business richer." Swapping cash for equipment leaves total assets unchanged, so equity does not move.
• "Taking a loan increases equity." Borrowing raises both an asset (cash) and a liability (the loan), leaving equity the same.
• "The equation only balances at year end." It balances after every single transaction, which is what makes double-entry self-checking.
• "If total assets did not change, nothing was recorded." Transactions 2 and 10 above changed no totals at all. The composition of assets changed, and both required full journal entries.
• "Adjusting entries can break the equation." They cannot. Each one changes an asset or liability and equity by the same amount.
• "Equity means the same thing everywhere." The concept is the same under GAAP and IFRS, but the presentation differs. IFRS calls the report the statement of financial position, and it permits property, plant, and equipment to be carried at revalued fair value, which U.S. GAAP does not.

Try it

A new company records these events. (1) Owners invest 30,000 cash for stock. (2) It buys a vehicle for 12,000 cash. (3) It buys 900 of supplies on account. (4) It performs services for 6,000 cash. (5) It pays 2,200 of wages. (6) It pays 400 of the amount owed on supplies. Give total assets, liabilities, and equity after each event, and confirm the equation holds at the end.

Answer: (1) A 30,000 = L 0 + E 30,000. (2) Cash falls 12,000 and the vehicle adds 12,000, so A 30,000 = L 0 + E 30,000. (3) A 30,900 = L 900 + E 30,000. (4) Revenue lifts equity, so A 36,900 = L 900 + E 36,000. (5) An expense lowers equity, so A 34,700 = L 900 + E 33,800. (6) Cash and the payable each fall 400, so A 34,300 = L 500 + E 33,800. Final check: cash is 30,000 minus 12,000 plus 6,000 minus 2,200 minus 400, which equals 21,400; plus the 12,000 vehicle and 900 of supplies gives 34,300. Liabilities of 500 plus equity of 33,800 equals 34,300, so the equation holds.

Recap

• The accounting equation is Assets = Liabilities + Equity, and it holds after every transaction.
• Assets are resources owned, liabilities are amounts owed, and equity is the owners' residual claim.
• It always balances because every asset was financed by a creditor or an owner.
• Owner investment and revenue increase equity; expenses and dividends decrease it.
• Running the equation through all eleven transactions gives assets of 30,900, liabilities of 5,400, and equity of 25,500.
• After the two period-end adjustments, assets are 29,950 and liabilities plus equity are 5,400 plus 24,550, also 29,950.
• Any two of the three parts let you solve for the third.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define and describe the expanded accounting equation and its relationship to analyzing transactions. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Analyze business transactions using the accounting equation and show the impact of business transactions on financial statements. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define, explain, and provide examples of current and noncurrent assets, current and noncurrent liabilities, equity, revenues, and expenses. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Compare and contrast owners' equity versus retained earnings. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. IFRS Foundation. (n.d.). IAS 1 Presentation of Financial Statements. IFRS Accounting Standards Navigator. ifrs.org
6. IFRS Foundation. (n.d.). IAS 16 Property, Plant and Equipment. IFRS Accounting Standards Navigator. ifrs.org
7. Financial Accounting Standards Board. (2021). Statement of Financial Accounting Concepts No. 8, Chapter 4: Elements of financial statements. FASB. find source ↗

The big picture

Imagine a shoebox with every receipt, invoice, and bank slip a business ever produced thrown in together. The information is all there and none of it is usable. Sorting is not clerical tidiness in accounting; it is the step that turns a record into an answer.

We cannot lump every transaction into one giant pile of "money," so accountants sort activity into accounts. Knowing the account types is the alphabet of accounting: once you can name what type an item is, you always know how it behaves on the statements and whether a debit or credit increases it. This lesson sets up the filing system that every later lesson relies on.

What an account is

An account is a running record of all the increases and decreases to one specific item, such as Cash, or Wages Expense, or Accounts Payable. Think of each account as its own labeled folder into which every relevant dollar is filed. When you want to know how much cash the business has, you open the Cash folder and net its ins and outs.

Key idea: An account is one labeled folder that tracks every increase and decrease to a single item.

The five account types

Every account belongs to one of five types, and those five map directly onto the accounting equation. Assets, liabilities, and equity come straight from the equation; revenues and expenses are really detailed sub-parts of equity.

Type	What it is	Examples
Assets	Resources owned	Cash, Accounts Receivable, Supplies, Equipment
Liabilities	Amounts owed	Accounts Payable, Notes Payable, Wages Payable
Equity	Owners' claims	Common Stock, Retained Earnings, Dividends
Revenue	Earnings from operations	Service Revenue, Sales Revenue
Expenses	Costs of earning revenue	Wages Expense, Rent Expense, Supplies Expense

Here accounts receivable is an asset: amounts customers owe the business for work already done, like an IOU from a client. And accounts payable is a liability: amounts the business owes suppliers for things bought on credit, like an unpaid invoice from a vendor.

Key idea: The five types are assets, liabilities, equity, revenue, and expenses, and they line up with the accounting equation.

Contra accounts: the sixth thing you need to know

A few accounts sit alongside another account and reduce it, rather than standing on their own. These are contra accounts, and they always carry the opposite normal balance from the account they offset.

The most common is Accumulated Depreciation, a contra-asset. Equipment costing 9,000 with 150 of accumulated depreciation is presented as 9,000 less 150, giving a book value of 8,850. The contra account exists so the reader can see both facts at once - what the asset originally cost, and how much of that cost has already been charged to expense. Crediting the Equipment account directly would destroy the first fact permanently.

Two other contra accounts appear later in most courses. Allowance for Doubtful Accounts is a contra-asset that reduces Accounts Receivable to the amount the business realistically expects to collect. Sales Returns and Allowances is a contra-revenue account that reduces gross sales without erasing the record of what was originally sold. In every case the pattern is the same: keep the original number visible and show the reduction beside it.

Key idea: A contra account offsets a related account and carries the opposite normal balance, preserving both the original amount and the reduction.

Current and non-current: the split that shapes the balance sheet

Assets and liabilities are further divided by timing. A current asset is expected to be converted to cash, sold, or consumed within one year or the operating cycle, whichever is longer; a current liability is due within that same window. Everything else is non-current. This is not cosmetic: it is what makes liquidity ratios possible, and it is the first thing a lender looks at.

Work it on a short list from a different firm. Cash 19,700; Accounts Receivable 1,000; Supplies 400; Prepaid Insurance 600; Equipment 9,000; Accumulated Depreciation 150; Accounts Payable 400; Wages Payable 350; Unearned Revenue 1,200; Notes Payable due in three years 5,000.

Current assets are 19,700 plus 1,000 plus 400 plus 600, which equals 21,700. Non-current assets are 9,000 minus 150, which equals 8,850, so total assets are 21,700 plus 8,850, which equals 30,550. Current liabilities are 400 plus 350 plus 1,200, which equals 1,950 - note that unearned revenue belongs here, because the obligation is to deliver service, not to pay cash. The note payable of 5,000 is non-current, so total liabilities are 6,950. Equity is therefore 30,550 minus 6,950, which equals 23,600.

Two lines in that list catch students out. Prepaid Insurance is an asset, not an expense, because the business has paid in advance and is owed future coverage. Unearned Revenue is a liability, not revenue, because the customer has paid and is owed future work. Both become income-statement items only as time passes, which is the subject of the adjusting-entries lesson.

Key idea: Current items settle within a year and non-current items later, and prepaid expenses are assets while unearned revenue is a liability.

Permanent versus temporary accounts

The first three types (assets, liabilities, equity) are permanent accounts: their balances carry from one year to the next, and they appear on the balance sheet. Cash you hold on December 31 is still your cash on January 1. Revenue and expense accounts are temporary accounts: they collect activity for one period, feed the income statement, and are then reset to zero to start the next period fresh, the way a scoreboard is cleared before a new game. Revenues and expenses are sub-categories of equity, because earning revenue grows equity and paying expenses shrinks it.

The resetting is not automatic. At period-end the business records closing entries that deliberately zero every temporary account and transfer the net result into Retained Earnings, an equity account that is permanent. This is why the income statement measures one period only, and why Retained Earnings accumulates across all periods. The full mechanics, including the Income Summary account used along the way, are worked through in the balance-sheet lesson once you have statements to close.

Key idea: Permanent accounts (assets, liabilities, equity) carry forward; temporary accounts (revenue, expense, dividends) reset to zero each period.

The chart of accounts

A chart of accounts is simply the organized master list of every account the business uses, usually with a number assigned to each. A common convention groups accounts by their first digit: 1 for assets, 2 for liabilities, 3 for equity, 4 for revenue, and 5 and up for expenses. A small company's chart might read:

• 101 Cash, 105 Accounts Receivable, 110 Supplies, 150 Equipment
• 201 Accounts Payable, 210 Notes Payable
• 301 Common Stock, 320 Retained Earnings, 330 Dividends
• 401 Service Revenue
• 501 Wages Expense, 505 Rent Expense, 510 Supplies Expense, 515 Depreciation Expense

The numbering is not accounting theory; it is just a filing system that keeps related accounts together and leaves gaps so new accounts can be slotted in later. Every entry you record for the rest of the course will name accounts drawn from a chart like this one.

Real charts grow another layer. A company with 800 customers does not want 800 receivable accounts cluttering its trial balance, so it keeps a single control account, Accounts Receivable, in the general ledger and a subsidiary ledger behind it holding one record per customer. The subsidiary records must always sum to the control account balance, which is a useful internal check: if the customer detail adds to 41,300 and the control account says 41,750, something is wrong and you know exactly where to look. Accounts Payable and Inventory are usually organised the same way.

Presentation order is one place where GAAP and IFRS visibly diverge. U.S. practice lists assets in order of liquidity, starting with cash, and liabilities with the soonest due first. Many companies reporting under IFRS follow the opposite convention, opening with non-current assets such as property and ending with cash. IAS 1 requires the current and non-current distinction but does not dictate the sequence, so the same company can look unfamiliar in translation while reporting identical facts.

Key idea: The chart of accounts is the numbered master directory that keeps every account organized by type.

Common wrong turns

• "Accounts payable and accounts receivable are the same thing." Payable is money you owe (a liability); receivable is money owed to you (an asset). They point in opposite directions.
• "Dividends are an expense." Dividends are a distribution of profit to owners and reduce equity directly; they never appear on the income statement.
• "The account numbers have accounting meaning." The numbers are just a filing convention; only the type of the account drives the accounting.
• "Revenue accounts keep growing forever." Revenue and expense accounts are temporary and are reset to zero at the end of each period.
• "Prepaid insurance is an expense because you paid for it." It is an asset until the coverage is used. Paying cash does not create an expense; consuming the benefit does.
• "Unearned revenue is revenue that has not been billed." It is the reverse: cash already collected for work not yet done, and it is a liability.
• "A contra account is just a negative account." It is a real account with a normal balance opposite to the one it offsets, and it exists so both the gross figure and the reduction stay visible.

Try it

Classify each of the following by type, and by current or non-current where relevant: (a) Wages Payable 350; (b) Prepaid Rent 2,400; (c) Accumulated Depreciation 900; (d) Unearned Service Revenue 1,500; (e) Dividends 500; (f) Notes Payable due in 18 months 8,000; (g) Supplies 400; (h) Service Revenue 10,000. Then compute total current liabilities from the list.

Answer: (a) liability, current. (b) asset, current, because the rent covers the coming months. (c) contra-asset, shown as a deduction from the related asset, not itself current or non-current. (d) liability, current, since the service is owed within a year. (e) temporary equity account, reducing equity; it is not an expense. (f) liability, non-current, because it is due beyond one year. (g) asset, current. (h) revenue, a temporary account that closes to retained earnings. Total current liabilities are 350 plus 1,500, which equals 1,850; the 8,000 note is non-current and the contra-asset is not a liability at all.

Recap

• An account is a running record of all increases and decreases to one specific item.
• The five account types are assets, liabilities, equity, revenue, and expenses.
• Contra accounts such as Accumulated Depreciation offset a related account and carry the opposite normal balance.
• Assets and liabilities split into current, settling within a year, and non-current.
• Assets, liabilities, and equity are permanent; revenue, expense, and dividends are temporary and are zeroed by closing entries.
• Revenues and expenses are sub-parts of equity because they raise or lower the owners' claim.
• The chart of accounts is the numbered master list that organizes every account by type, often supported by subsidiary ledgers behind control accounts.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define and describe the initial steps in the accounting cycle. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define, explain, and provide examples of current and noncurrent assets, current and noncurrent liabilities, equity, revenues, and expenses. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Prepare a subsidiary ledger. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Identify and describe current liabilities. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Distinguish between tangible and intangible assets. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. IFRS Foundation. (n.d.). IAS 1 Presentation of Financial Statements. IFRS Accounting Standards Navigator. ifrs.org
7. Financial Accounting Standards Board. (n.d.). Accounting Standards Codification, Topic 210: Balance sheet. FASB. find source ↗

The big picture

The words come from Latin. Debere means "he owes" and credere means "he trusts," which is how a medieval merchant would have described the two columns of a customer's page. Nothing about that history survives in the modern meaning, and trying to reason from the everyday sense of the words is the single most reliable way to get every entry backwards.

Now we meet the two words that scare newcomers and should not: debit and credit. They are the single most important mechanic in all of bookkeeping. Once these rules click, journal entries stop feeling like guesswork, because you can look at any account and know instantly which side makes it go up. Forget the everyday banking meaning of these words; in accounting they are just directions.

What debit and credit really mean

In accounting, debit means the left side of an account, and credit means the right side. That is the whole definition. A debit is not "bad" and a credit is not "good"; whether either raises or lowers a balance depends only on the account type. Accountants often write debit as Dr and credit as Cr. Picture each account as a T-account: a big letter T with the account name on top, debits on the left, credits on the right.

Cash
Debit (left)	Credit (right)
increases go here	decreases go here

Key idea: Debit simply means the left side of an account and credit the right side, with no built-in good or bad meaning.

The rules of increase and decrease

Each type of account has a normal balance, the side on which increases are recorded and where the account usually sits. Here is the entire rulebook, and it follows straight from the accounting equation. Accounts on the left of the equation (assets) increase with debits; accounts on the right (liabilities and equity) increase with credits.

Account type	Increase with a...	Decrease with a...	Normal balance
Asset	Debit	Credit	Debit
Expense	Debit	Credit	Debit
Dividends	Debit	Credit	Debit
Liability	Credit	Debit	Credit
Equity (stock, retained earnings)	Credit	Debit	Credit
Revenue	Credit	Debit	Credit

The table is worth deriving rather than memorising, because the derivation makes it impossible to forget. Write the equation with the sides labelled: Assets on the left, Liabilities plus Equity on the right. Now adopt one convention - increases are recorded on the same side of the account as the item sits in the equation. Assets sit on the left, so assets increase on the left, which is the debit side. Liabilities and equity sit on the right, so they increase on the right, the credit side. Everything else follows.

Revenue increases equity, so revenue must behave like equity and increase with a credit. Expenses decrease equity, so they must behave in the opposite direction and increase with a debit. Dividends also decrease equity, so they too increase with a debit. There is no separate rulebook for revenue, expenses, and dividends; they are equity accounts pointing in the direction their effect on equity implies.

This also explains why the system is self-checking. Every transaction increases something on the left and something on the right by the same amount, or increases and decreases two items on the same side. Either way total debits equal total credits, and either way the equation survives.

Key idea: Assets, expenses, and dividends increase with debits; liabilities, equity, and revenue increase with credits.

A mnemonic that sticks

A memory aid many students use is DEA-LER: Dividends, Expenses, and Assets have normal debit balances; Liabilities, Equity, and Revenue have normal credit balances. Notice the logic behind it: expenses and dividends behave like assets (debit to increase) because both ultimately reduce what the owners keep, while revenue behaves like equity (credit to increase) because it builds the owners' claim.

Key idea: DEA-LER packs the whole rulebook into six letters: Dividends, Expenses, Assets are debit-normal; Liabilities, Equity, Revenue are credit-normal.

The golden rule

In every transaction, total debits must equal total credits. This is what keeps the accounting equation balanced. If you record a 500 debit somewhere, you must record 500 of credits somewhere else, to one account or split across several. When your debits and credits do not match, you know at once that something is wrong.

Suppose the business receives 7,500 cash for services: you debit Cash 7,500 (an asset increasing) and credit Service Revenue 7,500 (revenue increasing). Debits equal credits, and the books stay in balance. Take one more: pay 1,000 rent in cash. Rent Expense increases, so you debit it 1,000; Cash decreases, so you credit it 1,000. Again the two sides match.

Key idea: Every transaction must have equal total debits and credits, which is the mechanism that keeps the equation balanced.

Two T-accounts worked to a balance

Reasoning gets easier once you watch two accounts of opposite normal balance fill up. Take Accounts Payable at Maple Lawn Care. It was credited 1,200 when supplies were bought on account, and debited 800 when part of that bill was paid.

Accounts Payable
Debits	Credits
800 (payment)	1,200 (purchase on account)
Total 800	Total 1,200
Balance = 1,200 - 800 = 400 credit

Credits exceed debits by 400, so the balance sits on the credit side, which is normal for a liability. Read it in plain language: the company still owes 400.

Now Service Revenue, which was credited twice - 7,500 for cash work and 2,500 for work on account - and never debited. Its balance is 7,500 plus 2,500, which equals 10,000, on the credit side. Revenue is credit-normal, so a revenue account carrying a debit balance would be an immediate signal that something had been recorded backwards.

That check generalises. Any asset with a credit balance, any liability with a debit balance, or any revenue account with a debit balance is either an error or one of a small number of genuine exceptions, such as an overdrawn bank account. Scanning for accounts on the wrong side is one of the quickest reviews a bookkeeper can perform.

Key idea: An account's balance sits on whichever side is larger, and an account resting on the side opposite its normal balance is a red flag worth investigating.

When the trial balance will not balance

Because debits must equal credits, a difference between the two column totals tells you an error exists. Better still, the size of the difference often tells you which kind.

If the difference is divisible by 9, suspect a transposition - digits swapped. Recording 540 as 450 creates a gap of 90, and 90 divided by 9 is 10. Recording 1,278 as 1,728 creates a gap of 450, and 450 divided by 9 is 50. A related error is the slide, where the decimal point moves: 5,400 entered as 540 leaves a difference of 4,860, and 4,860 divided by 9 is 540. Both come from misreading digits, and both leave that divisible-by-nine fingerprint.

If the difference is an even number, divide it by 2 and look for that amount posted on the wrong side. A credit of 300 mistakenly entered as a debit puts 300 too much in the debit column and leaves 300 missing from the credit column, so the columns differ by 600 - twice the amount of the error. Searching for a 300 entry is far faster than re-checking every line.

If the difference equals a single account balance exactly, an account was probably omitted from the trial balance or posted only once. And if the difference is 1, 10, or 100, the likeliest cause is simple addition. None of this is a substitute for care, but knowing the fingerprints turns a frustrating hunt into a directed search.

Key idea: A difference divisible by 9 suggests transposed digits, an even difference suggests an amount on the wrong side, and a difference equal to one balance suggests an omitted account.

Common wrong turns

• "A debit always means money going out and a credit money coming in." That is the bank's point of view. In the company's own books, a debit increases an asset like Cash, not decreases it.
• "Credits are good and debits are bad." Neither is good or bad; the effect depends entirely on the account type.
• "Revenue is debited because it brings in money." Revenue is credit-normal; you credit revenue to increase it, and the matching debit goes to Cash or a receivable.
• "An entry can have debits without equal credits." It cannot; if the two sides differ, the entry is wrong.
• "Expenses and dividends are their own category with their own rules." Both are equity accounts. They are debit-normal because both reduce equity, which is credit-normal.
• "If the trial balance is out by 90, the error is 90." A difference divisible by 9 usually points to transposed digits, and the underlying error is generally a different amount entirely.
• "A liability with a debit balance just means we overpaid, so it is fine." It may be, but it is far more often a recording error, and it always deserves a look.

Try it

For each item, state the account, whether it increases or decreases, and whether that is a debit or a credit. (a) The company receives 4,000 cash for services performed today. (b) It buys 600 of supplies on account. (c) It pays 900 of wages. (d) It pays 250 toward the supplier bill from (b). (e) It declares and pays a 300 dividend. Then: a trial balance is out by 810, with debits higher. What kind of error should you look for first?

Answer: (a) Cash increases, debit 4,000; Service Revenue increases, credit 4,000. (b) Supplies increases, debit 600; Accounts Payable increases, credit 600. (c) Wages Expense increases, debit 900; Cash decreases, credit 900. (d) Accounts Payable decreases, debit 250; Cash decreases, credit 250. (e) Dividends increases, debit 300; Cash decreases, credit 300. For the trial balance: 810 divided by 9 is 90, so a transposition is the first suspect - for example 1,890 recorded as 1,080, or 450 recorded as 540 in the debit column.

Recap

• Debit is the left side of an account, credit is the right side, and neither is inherently good or bad.
• The rules follow from the equation: items on the left increase on the left, items on the right increase on the right.
• Assets, expenses, and dividends increase with debits and have debit normal balances.
• Liabilities, equity, and revenue increase with credits and have credit normal balances.
• DEA-LER is a quick way to recall which accounts are debit-normal and which are credit-normal.
• An account resting on the side opposite its normal balance is usually an error worth investigating.
• In every transaction, total debits must equal total credits, and the size of any imbalance hints at the type of error.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Use journal entries to record transactions and post to T-accounts. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Prepare a trial balance. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define and describe the expanded accounting equation and its relationship to analyzing transactions. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define and describe the components of an accounting information system. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe internal controls within an organization. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe typical accounting activities and the role accountants play in identifying, recording, and reporting financial activities. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
7. Pacioli, L. (1494). Summa de arithmetica, geometria, proportioni et proportionalita (Particularis de computis et scripturis). Paganino de Paganini. find source ↗

The big picture

Every audited financial statement in the world, however large the company, can be traced back through the ledger to a specific dated line saying that on such a day these accounts moved by these amounts, supported by a document. That traceability is not a nice feature of the system. It is the system.

A journal entry is the formal, dated record of a single transaction, written the moment it happens. This is where accounting stops being theory and becomes a skill you can perform. Every financial statement a company ever publishes traces back to a stack of journal entries like the ones you will write here, so this is the workhorse lesson of the whole course.

How an entry is written

The book of original entry where transactions are first written is called the journal, and recording an entry is called journalizing. Every entry follows the same tidy format: the account debited is written first and flush left, the account credited is written second and indented, and the debit column total equals the credit column total. Writing it this way makes the balance obvious at a glance.

Written out properly, with a date, both accounts, two amount columns, and a short explanation, four of Maple Lawn Care's June entries look like this.

Date	Account	Debit	Credit
Jun 1	Cash	20,000
	Common Stock		20,000
	Issued stock to the owner for cash.
Jun 4	Supplies	1,200
	Accounts Payable		1,200
	Purchased lawn supplies on 30-day credit terms.
Jun 18	Accounts Receivable	2,500
	Service Revenue		2,500
	Completed lawn contracts billed to customers.
Jun 28	Accounts Payable	800
	Cash		800
	Partial payment on the June 4 supplier invoice.

The layout is doing real work. The date allows chronological review; the indentation makes the credited account unmistakable even in a long compound entry; the two columns let anyone total a page and confirm equality; and the explanation, together with the supporting invoice or receipt, is what an auditor follows when asking why a number exists. A journal without explanations is a list of assertions.

Key idea: A journal entry lists the debited account first and the credited account second, and its debits always equal its credits.

A three-step method

1. Identify the accounts the transaction touches, and their type.
2. Decide the direction: is each account increasing or decreasing?
3. Apply the debit and credit rules and confirm debits equal credits.

Let us journalize the first eleven transactions of Maple Lawn Care, Inc. These are the same events we will carry through the ledger, trial balance, and statements in the modules ahead, so it is worth reading each one slowly.

#	Transaction	Entry (Dr / Cr)	Amount
1	Owner invests cash for stock	Dr Cash Cr Common Stock	20,000 20,000
2	Buy equipment for cash	Dr Equipment Cr Cash	9,000 9,000
3	Buy supplies on account	Dr Supplies Cr Accounts Payable	1,200 1,200
4	Borrow cash on a note	Dr Cash Cr Notes Payable	5,000 5,000
5	Perform services for cash	Dr Cash Cr Service Revenue	7,500 7,500
6	Perform services on account	Dr Accounts Receivable Cr Service Revenue	2,500 2,500
7	Pay wages in cash	Dr Wages Expense Cr Cash	3,000 3,000
8	Pay rent in cash	Dr Rent Expense Cr Cash	1,000 1,000
9	Pay part of accounts payable	Dr Accounts Payable Cr Cash	800 800
10	Collect part of receivable	Dr Cash Cr Accounts Receivable	1,500 1,500
11	Pay a cash dividend	Dr Dividends Cr Cash	500 500

Key idea: Analyze every transaction by naming the accounts, deciding up or down, then applying the debit and credit rules so the entry balances.

Reading two entries closely

Walk through entry 5 to see the method in action. The business earned money, so Cash (an asset) goes up, which is a debit, and Service Revenue (revenue) goes up, which is a credit. Both are 7,500, so the entry balances. Entry 7 is the mirror image on the cost side: Wages Expense goes up (a debit, because expenses are debit-normal) and Cash goes down (a credit). Notice how the same handful of rules handles both an inflow and an outflow.

Entries 9 and 10 are the pair students most often misread, because neither touches an income statement account. In entry 9 the company pays 800 toward its supplier bill: Accounts Payable (a liability) goes down, which is a debit, and Cash goes down, which is a credit. No expense appears, because the expense was already created back in entry 3 when the supplies were acquired. In entry 10 the company collects 1,500 from a customer: Cash goes up, a debit, and Accounts Receivable goes down, a credit. No revenue appears, because the revenue was recorded in entry 6 when the work was done. Both entries move money without changing profit at all.

Key idea: Earning revenue debits an asset and credits revenue; paying a cost debits an expense and credits cash.

When revenue may be recorded

Entry 6 recorded 2,500 of revenue before a cent arrived, which raises the obvious question of when a business is allowed to do that. The answer is the same under U.S. GAAP and IFRS, because the two boards issued a converged standard - ASC 606 in the Codification and IFRS 15 - built on a five-step model.

1. Identify the contract with the customer.
2. Identify the distinct performance obligations in it.
3. Determine the transaction price.
4. Allocate that price to the performance obligations.
5. Recognise revenue when, or as, each obligation is satisfied.

Maple Lawn Care's obligation was to mow the lawns. Once the mowing was done the obligation was satisfied, so the 2,500 was earned regardless of the payment terms. Change the facts and the answer changes with them. If a customer prepaid 1,200 in June for a twelve-month contract, no obligation has yet been satisfied, so the entry is Dr Cash 1,200 and Cr Unearned Revenue 1,200 - a liability, not revenue - and 100 moves into revenue each month as the service is delivered.

This is where accounting stops being mechanical. Deciding whether an obligation has been satisfied requires judgement, and it is the area where reporting fraud most often lives, which is why the standard is so detailed.

Key idea: Under the converged ASC 606 and IFRS 15 model, revenue is recorded when the performance obligation is satisfied, not when cash arrives or an invoice is sent.

Fixing an entry that was recorded wrongly

Errors are found after the fact, and the fix is never an eraser. The accepted approach is a correcting entry that moves the books from what was recorded to what should have been recorded.

Suppose a 900 rent payment was recorded as Dr Wages Expense 900, Cr Cash 900. Cash was right; the expense went to the wrong account. The correcting entry is Dr Rent Expense 900 and Cr Wages Expense 900. Debits equal credits, cash is untouched, and both expense accounts now hold the right amount.

Now a wrong amount. Suppose entry 6 had been written as 5,200 instead of 2,500 - a transposition. Both accounts are correct, but each is overstated by 5,200 minus 2,500, which equals 2,700. The correcting entry reverses only the excess: Dr Service Revenue 2,700 and Cr Accounts Receivable 2,700. Afterwards Service Revenue is 5,200 minus 2,700, which equals 2,500, and the receivable matches.

A second method works for either case: reverse the original entry completely, then record the correct one. It takes two entries instead of one and leaves a slightly longer trail, which some organizations prefer precisely because the history is more explicit. What is never acceptable is deleting the original line, because the audit trail is the thing that makes the numbers worth believing.

Key idea: Errors are corrected with a new balanced entry that moves the accounts from what was recorded to what was correct, never by altering or deleting the original.

Compound entries

An entry with more than one debit or more than one credit is called a compound entry; it still must balance overall. Suppose instead of entry 3 the company had bought 1,000 of supplies by paying 200 cash now and putting 800 on account.

The compound entry would be: Dr Supplies 1,000; Cr Cash 200; Cr Accounts Payable 800. The single debit of 1,000 equals the two credits of 200 plus 800. As long as total debits equal total credits, an entry can touch as many accounts as the transaction requires. Along the way you also meet two accounts by name: common stock, an equity account for what owners invest in exchange for shares, and a note payable, a liability for money borrowed under a written promise to repay.

Key idea: A compound entry can affect many accounts at once as long as total debits still equal total credits.

Common wrong turns

• "Every entry has exactly one debit and one credit." Many entries do, but compound entries can split across several accounts as long as the totals match.
• "Services on account are not recorded until the cash arrives." Under accrual accounting you record the revenue when earned, debiting Accounts Receivable, and record the cash later when it is collected.
• "The larger amount always goes on the debit side." The side depends on the account type and direction, not on the size of the number.
• "Paying a supplier is an expense." Paying down Accounts Payable reduces a liability; the expense (if any) was recorded when the cost was first incurred.
• "Collecting a receivable is revenue." The revenue was recorded when the work was done. Collection only converts a receivable into cash.
• "Cash received always means revenue earned." Cash collected before the work is done creates Unearned Revenue, a liability, under both ASC 606 and IFRS 15.
• "You fix a wrong entry by deleting it." You fix it with a new balanced correcting entry. Deleting destroys the audit trail, which is the point of the whole record.

Try it

Journalize each of the following, then answer the last part. (a) A firm receives 3,600 cash on 1 April for a twelve-month service contract beginning that day. (b) It completes 1,400 of work for a client on account. (c) It pays 500 toward a supplier invoice recorded last month. (d) A 1,100 utility payment was mistakenly recorded as Dr Rent Expense 1,100, Cr Cash 1,100. Write the correcting entry.

Answer: (a) Dr Cash 3,600; Cr Unearned Revenue 3,600 - no obligation has been satisfied yet, so nothing is revenue. Each month thereafter, Dr Unearned Revenue 300 and Cr Service Revenue 300, since 3,600 divided by 12 equals 300. (b) Dr Accounts Receivable 1,400; Cr Service Revenue 1,400. (c) Dr Accounts Payable 500; Cr Cash 500, with no expense, because the expense was recorded when the cost was incurred. (d) Dr Utilities Expense 1,100; Cr Rent Expense 1,100. Cash was correct, so it is not touched.

Recap

• A journal entry is the dated record of one transaction, debited account first and credited account indented, with an explanation.
• Analyze each transaction in three steps: identify accounts, decide direction, apply the rules.
• Earning revenue for cash debits Cash and credits Service Revenue; both sides are equal.
• Paying a payable and collecting a receivable move money without touching profit.
• Under ASC 606 and IFRS 15, revenue is recognised when a performance obligation is satisfied.
• A compound entry affects more than two accounts but still balances.
• Errors are fixed with a correcting entry, never by deleting the original record.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Use journal entries to record transactions and post to T-accounts. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Explain the revenue recognition principle and how it relates to current and future sales and purchase transactions. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Analyze and journalize transactions using special journals. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Analyze and record transactions for the sale of merchandise using the perpetual inventory system. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. IFRS Foundation. (n.d.). IFRS 15 Revenue from Contracts with Customers. IFRS Accounting Standards Navigator. ifrs.org
6. Financial Accounting Standards Board. (2014). Accounting Standards Update No. 2014-09, Revenue from contracts with customers (Topic 606). FASB. find source ↗
7. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe and explain the purpose of special journals and their importance to stakeholders. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org

The big picture

A journal answers the question "what happened on Tuesday." Nobody has ever needed to know that. What people need to know is how much cash there is, how much customers owe, and how much the company owes - and no journal, however carefully written, can tell you any of those things directly.

The journal records transactions in the order they happen, but to know how much cash you actually have, you need all the cash activity gathered in one place. That gathering happens in the ledger, and once every account has a balance, the trial balance proves that your debits and credits still agree. This lesson connects the entries you just learned to write with the statements you are about to build.

From journal to ledger

The general ledger is the complete set of every account, each holding all the debits and credits that have been posted to it from the journal. Journalizing captures a transaction in date order; posting copies each debit and credit into the right ledger account so that, for example, every entry that touched Cash ends up together in the Cash account. If the journal is a diary, the ledger is the set of folders the diary entries are sorted into.

Key idea: Posting moves each debit and credit from the journal into its ledger account, gathering all activity for one account in one place.

Finding an account balance

An account balance is the difference between an account's total debits and total credits, sitting on whichever side is larger. Take Maple Lawn Care's Cash account after all eleven transactions from the last lesson. Cash was debited by transactions 1, 4, 5, and 10 and credited by 2, 7, 8, 9, and 11.

Cash (ledger)
Debits	Credits
20,000 / 5,000 / 7,500 / 1,500	9,000 / 3,000 / 1,000 / 800 / 500
Total 34,000	Total 14,300
Balance = 34,000 - 14,300 = 19,700 debit

The debits add to 34,000 and the credits to 14,300, so the balance is 19,700, and because debits are larger it is a debit balance, which is normal for an asset.

Every other account is found the same way, and it is worth doing all of them once so the trial balance below is something you derived rather than something you were handed.

Account	Debits posted	Credits posted	Balance
Cash	20,000 / 5,000 / 7,500 / 1,500 = 34,000	9,000 / 3,000 / 1,000 / 800 / 500 = 14,300	19,700 debit
Accounts Receivable	2,500	1,500	1,000 debit
Supplies	1,200	none	1,200 debit
Equipment	9,000	none	9,000 debit
Accounts Payable	800	1,200	400 credit
Notes Payable	none	5,000	5,000 credit
Common Stock	none	20,000	20,000 credit
Dividends	500	none	500 debit
Service Revenue	none	7,500 / 2,500 = 10,000	10,000 credit
Wages Expense	3,000	none	3,000 debit
Rent Expense	1,000	none	1,000 debit

Notice that each balance landed on the account's normal side: assets, dividends, and expenses on the debit side; liabilities, common stock, and revenue on the credit side. Nothing here is on the wrong side, which is the first quick review a bookkeeper performs before totalling anything.

Key idea: An account's balance is total debits minus total credits, resting on the larger side.

The trial balance

Once every account has a balance, we prove the books with a trial balance: a two-column list of every account and its balance, with debit balances in one column and credit balances in the other. If the bookkeeping obeyed the rule that debits equal credits, the two columns must total to the same number. Here is Maple Lawn Care's trial balance before month-end adjustments, called an unadjusted trial balance:

Account	Debit	Credit
Cash	19,700
Accounts Receivable	1,000
Supplies	1,200
Equipment	9,000
Accounts Payable		400
Notes Payable		5,000
Common Stock		20,000
Dividends	500
Service Revenue		10,000
Wages Expense	3,000
Rent Expense	1,000
Totals	35,400	35,400

Add each column: the debit column is 19,700 plus 1,000 plus 1,200 plus 9,000 plus 500 plus 3,000 plus 1,000, which equals 35,400. The credit column is 400 plus 5,000 plus 20,000 plus 10,000, which also equals 35,400. Both columns total 35,400, so the trial balance balances.

Key idea: A trial balance lists every account's balance in a debit or credit column, and the two columns should total to the same amount.

The adjusted trial balance

The unadjusted trial balance is not the version that produces the statements. Two things are still missing on 30 June: 800 of supplies have been used up, and the equipment has depreciated by 150. The next lesson records those adjusting entries in full; here we look at what they do to the trial balance, because the resulting adjusted trial balance is the direct source of every figure on the income statement and balance sheet.

The supplies adjustment debits Supplies Expense 800 and credits Supplies 800, so Supplies falls from 1,200 to 400 and a new 800 expense appears. The depreciation adjustment debits Depreciation Expense 150 and credits Accumulated Depreciation 150, creating a new contra-asset with a credit balance. Both entries add exactly as much to the debit column as to the credit column, so the trial balance must still balance - just at a higher total.

Account	Debit	Credit
Cash	19,700
Accounts Receivable	1,000
Supplies	400
Equipment	9,000
Accumulated Depreciation		150
Accounts Payable		400
Notes Payable		5,000
Common Stock		20,000
Dividends	500
Service Revenue		10,000
Wages Expense	3,000
Rent Expense	1,000
Supplies Expense	800
Depreciation Expense	150
Totals	35,550	35,550

Total the debit column: 19,700 plus 1,000 plus 400 plus 9,000 plus 500 plus 3,000 plus 1,000 plus 800 plus 150 equals 35,550. Total the credits: 150 plus 400 plus 5,000 plus 20,000 plus 10,000 equals 35,550. The columns agree, and the total rose from 35,400 to 35,550 - a change of 150, which is exactly the new accumulated depreciation, since the supplies adjustment merely moved 800 from one debit account to another.

From here the route to the statements is mechanical. Every revenue and expense line - 10,000, 3,000, 1,000, 800, and 150 - goes to the income statement. Dividends goes to the statement of retained earnings. Everything else - cash, receivable, supplies, equipment, accumulated depreciation, the two payables, and common stock - goes to the balance sheet, joined by the retained earnings figure the other two statements produce. Module 4 does exactly that, line by line.

Key idea: The adjusted trial balance is the bridge to the statements: revenues and expenses go to the income statement, dividends to retained earnings, and the rest to the balance sheet.

What the trial balance does not prove

Be careful: a balanced trial balance proves only that debits equal credits. It does not prove the books are correct. If you posted a transaction to the wrong account, or forgot an entry entirely, or recorded the right amount twice, the columns can still match. The trial balance is a useful checkpoint, not a certificate of accuracy.

It is worth naming the five errors that survive a balanced trial balance, because knowing them is what stops a student from over-trusting the check.

• An omitted transaction. If an entire entry was never recorded, both columns are equally short and still agree.
• A duplicated entry. Recording the same transaction twice adds equal debits and credits.
• A wrong account of the right type. Debiting Rent Expense instead of Utilities Expense leaves the totals untouched and the income statement wrong.
• A compensating error. Two mistakes that happen to offset - a debit overstated by 200 and a credit overstated by 200 elsewhere.
• A wrong amount used consistently. Recording a 900 sale as 90 on both sides balances perfectly and understates revenue.

Every one of those requires a different control to catch: reconciling to source documents, reconciling the bank statement, reviewing account activity for reasonableness, and having someone other than the preparer look at the result. The trial balance is the cheapest check available, not the only one needed.

Key idea: A balanced trial balance confirms debits equal credits but cannot catch a missing, duplicated, or misclassified entry.

Common wrong turns

• "A balanced trial balance means there are no errors." It only proves debits equal credits; several kinds of errors leave it balanced.
• "The ledger and the journal are the same book." The journal records transactions in date order; the ledger sorts those amounts by account.
• "An account balance is just the last number entered." The balance is the net of all debits and all credits, not the most recent figure.
• "Every account appears in both trial-balance columns." Each account shows its balance in only one column, debit or credit, based on its normal side.
• "The unadjusted trial balance is what makes the statements." The adjusted trial balance does. Statements built from unadjusted balances would omit supplies used, depreciation, accrued wages, and earned portions of unearned revenue.
• "Adjustments can unbalance the trial balance." Each adjusting entry adds equal debits and credits, so a balanced trial balance stays balanced - only the total changes.
• "Accumulated Depreciation belongs in the debit column." It is a contra-asset with a credit normal balance, so it sits in the credit column even though it relates to an asset.

Try it

A company's ledger shows these balances before adjustment: Cash 14,200 debit; Accounts Receivable 3,600 debit; Prepaid Insurance 1,800 debit; Equipment 12,000 debit; Accounts Payable 2,100 credit; Common Stock 20,000 credit; Service Revenue 12,500 credit; Wages Expense 2,400 debit; Rent Expense 600 debit. (a) Do the columns balance? (b) An adjustment records 300 of insurance used and 200 of depreciation. Show the effect on each account. (c) What are the adjusted column totals? (d) The bookkeeper then finds a 700 utility bill that was never recorded at all. Would the trial balance have revealed it?

Answer: (a) Debits are 14,200 plus 3,600 plus 1,800 plus 12,000 plus 2,400 plus 600, which equals 34,600. Credits are 2,100 plus 20,000 plus 12,500, which equals 34,600. Yes. (b) Insurance Expense 300 debit is new and Prepaid Insurance falls to 1,500; Depreciation Expense 200 debit is new and Accumulated Depreciation 200 credit is new. (c) Debits are 34,600 minus 300 plus 300 plus 200, which equals 34,800; credits are 34,600 plus 200, which equals 34,800. (d) No. An omitted transaction leaves both columns equally short, which is exactly why the trial balance is not proof of correctness.

Recap

• The general ledger holds every account with all amounts posted to it from the journal.
• Posting transfers journal debits and credits into the individual ledger accounts.
• An account balance is total debits minus total credits, on the larger side.
• A trial balance lists all balances and should have equal debit and credit column totals.
• The unadjusted totals are 35,400 and the adjusted totals are 35,550 for the running example.
• The adjusted trial balance feeds revenues and expenses to the income statement, dividends to retained earnings, and everything else to the balance sheet.
• A balanced trial balance proves only equality, not overall correctness, and five common error types survive it.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Prepare a trial balance. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Use the ledger balances to prepare an adjusted trial balance. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Use journal entries to record transactions and post to T-accounts. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define and explain internal controls and their purpose within an organization. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Define the purpose of a bank reconciliation, and prepare a bank reconciliation and its associated journal entries. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. Franklin, M., Graybeal, P., & Cooper, D. (2019). Appendix: Complete a comprehensive accounting cycle for a business. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
7. Financial Accounting Standards Board. (n.d.). Accounting Standards Codification, Topic 250: Accounting changes and error corrections. FASB. find source ↗

The big picture

Nobody sends an invoice when a jar of supplies runs low, and no bank statement records the day a truck became a year older. Yet both events cost the business money during the period. Adjusting entries are how the books catch up with the things that happened without paperwork.

Under accrual accounting, some economic activity does not arrive with a tidy transaction to record. Supplies get used up a little each day, equipment wears out slowly, and wages build up before payday. Adjusting entries are how accountants make the accounts tell the truth at the end of a period, and they are the reason accrual statements are more accurate than a simple cash record. Every income statement you trust depends on these getting made.

Why adjustments are needed

Adjusting entries are entries made on the last day of the period to bring each account to its correct balance and to match revenues with the expenses that helped earn them. That last idea is the matching principle: expenses should be recorded in the same period as the revenues they helped produce, not simply when cash is paid. A helpful rule of thumb: every adjusting entry changes at least one income-statement account and one balance-sheet account, and none of them involves cash.

The four types, in one table

Every adjusting entry is one of exactly four kinds, and they sort along two questions: did cash move first, or does it move later? A deferral means the cash already moved and the earning or consuming happens afterwards. An accrual means the earning or consuming already happened and the cash moves afterwards.

Type	What happened	Adjusting entry
Deferred (prepaid) expense	Cash paid in advance; the benefit is now being used	Dr Expense / Cr Asset
Deferred (unearned) revenue	Cash received in advance; the work is now being done	Dr Liability / Cr Revenue
Accrued expense	Cost incurred; cash not yet paid	Dr Expense / Cr Liability
Accrued revenue	Work done; cash not yet received and not yet billed	Dr Asset / Cr Revenue
(Depreciation, a special deferral)	A long-lived asset used up over time	Dr Expense / Cr Contra-asset

Look at the pattern in the right-hand column. Every single entry has one income-statement account and one balance-sheet account, and none of them is Cash. If your adjusting entry debits or credits Cash, it is not an adjusting entry - it is a transaction you forgot to record earlier.

Key idea: Adjusting entries update balances at period-end so revenues and expenses land in the right period, and they never touch cash.

A deferral worked in full

To keep Maple Lawn Care's figures unchanged, follow a second small firm, Cedar Studio, through four adjustments of its own.

On 1 June Cedar Studio pays 3,600 for a twelve-month insurance policy. The cash left immediately, but the benefit has not been consumed, so the original entry creates an asset: Dr Prepaid Insurance 3,600, Cr Cash 3,600. That is a transaction, not an adjustment.

By 30 June one of the twelve months has been used. The monthly cost is 3,600 divided by 12, which equals 300, so the adjusting entry is Dr Insurance Expense 300 and Cr Prepaid Insurance 300. Prepaid Insurance now stands at 3,600 minus 300, which equals 3,300, representing eleven months of unused coverage, and June's income statement carries 300 of insurance cost. No cash moved on 30 June, and none should have.

The second deferral runs the other way. On 1 June a client prepays 1,200 for a six-month retainer. Cedar Studio owes service, so the original entry is Dr Cash 1,200 and Cr Unearned Revenue 1,200 - a liability. After one month of work, 1,200 divided by 6, which equals 200, has been earned. The adjusting entry is Dr Unearned Revenue 200 and Cr Service Revenue 200, leaving 1,200 minus 200, which equals 1,000, still owed to the client.

Key idea: A deferral starts as an asset or a liability when cash moves, and the adjusting entry transfers the portion now used or earned into an expense or revenue.

An accrual worked in full

Accruals are the mirror image: the economics happened, the paperwork has not.

Cedar Studio's staff worked the last three days of June and earned 450, which will be paid in the 3 July payroll run. Those three days helped produce June's revenue, so the matching principle requires the cost in June. The adjusting entry is Dr Wages Expense 450 and Cr Wages Payable 450. June's expenses rise by 450 and a 450 current liability appears on the 30 June balance sheet. When the payroll is actually paid on 3 July the entry will be Dr Wages Payable 450 and Cr Cash 450, with no expense at all, because the expense was already taken.

The last type is accrued revenue. Cedar Studio completed 700 of work on 29 and 30 June but has not yet issued the invoice. The performance obligation was satisfied, so the revenue belongs in June: Dr Accounts Receivable 700 and Cr Service Revenue 700. When the invoice is paid in July the entry will be Dr Cash 700 and Cr Accounts Receivable 700, again with no revenue, because the revenue was already recognised.

Put all four together and June's reported income changes by 200 plus 700 of extra revenue, less 300 plus 450 of extra expense, which is 900 minus 750, a net increase of 150. Not one cent of cash moved in making that difference. That is exactly the gap between profit and cash flow that the statement of cash flows exists to explain.

Key idea: An accrual records revenue earned or cost incurred before any cash moves, creating a receivable or a payable that the later cash payment then settles.

Adjustment 1: supplies used

Maple Lawn Care bought 1,200 of supplies (entry 3). A count at month-end shows 400 of supplies still on hand, so 1,200 minus 400, which is 800 worth, were used up and have become an expense. The adjusting entry moves that 800 out of the asset and into an expense:

Account	Debit	Credit
Supplies Expense	800
Supplies		800

After this entry the Supplies asset is 400 (what remains) and Supplies Expense is 800 (what was consumed).

Key idea: The supplies adjustment expenses what was used up, computed as beginning supplies minus what remains on hand.

Adjustment 2: depreciation

The 9,000 of equipment will serve for years, so its cost is spread over its useful life through depreciation, the systematic allocation of a long-lived asset's cost to the periods that use it. Say the monthly depreciation is 150. We do not credit the Equipment account directly; instead we credit a special account called Accumulated Depreciation, a contra-asset that is subtracted from the equipment's cost on the balance sheet:

Account	Debit	Credit
Depreciation Expense	150
Accumulated Depreciation		150

The equipment still shows its original 9,000 cost, but its book value (or carrying value), which is cost minus accumulated depreciation, is now 9,000 minus 150, which equals 8,850.

Where does the 150 come from? Straight-line depreciation spreads the depreciable amount evenly: take cost, subtract the estimated salvage value the asset will be worth at the end, and divide by the useful life. Maple Lawn Care's equipment cost 9,000, is expected to be worth nothing at the end, and will serve five years. Annual depreciation is 9,000 minus 0, divided by 5, which equals 1,800, and monthly depreciation is 1,800 divided by 12, which equals 150.

Change one estimate and the expense changes with it. If the equipment were expected to fetch 900 at the end of five years, the depreciable amount would be 9,000 minus 900, which equals 8,100; annual depreciation would be 8,100 divided by 5, which equals 1,620, and the monthly figure would be 1,620 divided by 12, which equals 135. Depreciation is not a measurement of anything observable. It is an allocation built on two estimates, and reasonable accountants can produce different numbers from identical facts.

This is one of the places U.S. GAAP and IFRS visibly diverge. IAS 16 requires component depreciation, so a building's roof, lifts, and structure are depreciated separately over their own lives; U.S. GAAP permits this but does not require it. IAS 16 also requires residual value, useful life, and method to be reviewed at least annually, whereas U.S. GAAP revisits them when events suggest a change. And IFRS allows the asset to be carried at a revalued fair value, which U.S. GAAP does not permit at all.

Key idea: Depreciation records the period's expense and builds up Accumulated Depreciation, a contra-asset that lowers the asset's book value without erasing its cost.

Two more common adjustments

• Accrued expenses are costs incurred but not yet paid or recorded, such as wages earned by employees in the last days of the month before payday. The adjustment debits an expense and credits a payable, for example Dr Wages Expense, Cr Wages Payable.
• Unearned revenue is cash collected before the work is done, which starts life as a liability because you still owe the customer service. As you deliver, you move it into revenue, for example Dr Unearned Revenue, Cr Service Revenue.

After all adjustments are posted, a new adjusted trial balance is prepared, and its balances are the ones used to build the financial statements. For Maple Lawn Care, the two adjustments above raise total expenses by 800 plus 150, which equals 950, and we will see that flow straight into the income statement next.

Key idea: Accrued expenses record unpaid costs as a payable, and unearned revenue starts as a liability that becomes revenue as the work is delivered.

Common wrong turns

• "Adjusting entries move cash." They never involve cash; they reallocate amounts already recorded so the period is stated correctly.
• "Depreciation lowers the Equipment account." Depreciation credits Accumulated Depreciation, a contra-asset, leaving the equipment's original cost visible on the books.
• "Unearned revenue is revenue." Cash received before the work is done is a liability until the service is delivered, because the business still owes something.
• "Adjustments are optional cleanup." Without them, accrual statements would misstate income, so under GAAP they are required at period-end.
• "Prepaying an expense creates an expense." It creates an asset. The expense appears only as the benefit is used, one adjusting entry at a time.
• "Paying accrued wages in July is a July expense." No. The expense was recorded in June by the accrual; the July entry only clears the liability.
• "Depreciation measures how much the asset is now worth." It allocates cost over time using two estimates. Book value is rarely market value, and under U.S. GAAP it is never revalued upward.

Try it

At 31 March a firm needs four adjustments. (1) It paid 2,400 on 1 January for a twelve-month licence, recorded as Prepaid Licence. (2) On 1 February a client prepaid 4,500 for nine months of service, recorded as Unearned Revenue. (3) Employees earned 620 in the last week of March, payable in April. (4) A machine costing 24,000, with 4,000 salvage value and an eight-year life, needs one quarter of depreciation. Write each adjusting entry with amounts, and state the net effect on March-quarter income.

Answer: (1) Three months of the licence are used: 2,400 divided by 12, which equals 200 a month, times 3 equals 600. Dr Licence Expense 600; Cr Prepaid Licence 600. (2) Two months have been earned: 4,500 divided by 9, which equals 500 a month, times 2 equals 1,000. Dr Unearned Revenue 1,000; Cr Service Revenue 1,000. (3) Dr Wages Expense 620; Cr Wages Payable 620. (4) The depreciable amount is 24,000 minus 4,000, which equals 20,000; annual depreciation is 20,000 divided by 8, which equals 2,500; one quarter is 2,500 divided by 4, which equals 625. Dr Depreciation Expense 625; Cr Accumulated Depreciation 625. Net effect on income: revenue rises 1,000 and expenses rise 600 plus 620 plus 625, which equals 1,845, so income falls by 845. No cash moved in any of the four entries.

Recap

• Adjusting entries are period-end entries that put revenues and expenses in the right period and never involve cash.
• There are four types: deferred expense, deferred revenue, accrued expense, and accrued revenue, plus depreciation as a special deferral.
• Every adjusting entry touches exactly one income-statement account and one balance-sheet account.
• The supplies adjustment expenses what was used: beginning supplies minus what remains.
• Straight-line depreciation is cost minus salvage value, divided by useful life.
• Depreciation records an expense and increases Accumulated Depreciation, a contra-asset that reduces book value.
• Accrued expenses create a payable; unearned revenue is a liability until the service is delivered.
• An adjusted trial balance follows the adjustments and feeds the financial statements.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Explain the concepts and guidelines affecting adjusting entries. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Discuss the adjustment process and illustrate common types of adjusting entries. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Record and post the common types of adjusting entries. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Explain and apply depreciation methods to allocate capitalized costs. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Analyze, journalize, and report current liabilities. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. IFRS Foundation. (n.d.). IAS 16 Property, Plant and Equipment. IFRS Accounting Standards Navigator. ifrs.org
7. Financial Accounting Standards Board. (n.d.). Accounting Standards Codification, Topic 360: Property, plant, and equipment. FASB. find source ↗

The big picture

Of the four statements, this is the one that gets quoted in headlines, moves share prices, and decides bonuses. It is also the one built from the most estimates. Both of those facts are worth carrying into the lesson at the same time.

The income statement reports whether a business made money over a stretch of time. It is the first statement most owners, investors, and analysts turn to, because its bottom line answers the plainest question in business: did we earn a profit? Everything you recorded and adjusted in the earlier lessons finally pays off here as a clear measure of performance.

What it reports

The income statement (also called the profit-and-loss statement) reports a company's financial performance over a period of time, such as a month, quarter, or year. Its logic is one subtraction: Revenues minus Expenses equals Net Income. When revenues exceed expenses the result is net income, a profit; when expenses exceed revenues it is a net loss. Because it covers a span of time, its heading always names a period, such as "For the Month Ended June 30," rather than a single date.

Key idea: The income statement covers a period and reports Revenues minus Expenses equals Net Income (or a net loss).

Maple Lawn Care's income statement

Using the adjusted balances, Service Revenue of 10,000 and the four expenses (including the 800 supplies and 150 depreciation adjustments from the last lesson), here is the finished statement:

Maple Lawn Care, Inc. - Income Statement For the Month Ended June 30
Service revenue	10,000
Expenses:
Wages expense	3,000
Rent expense	1,000
Supplies expense	800
Depreciation expense	150
Total expenses	4,950
Net income	5,050

The arithmetic: total expenses are 3,000 plus 1,000 plus 800 plus 150, which equals 4,950, and net income is 10,000 minus 4,950, which equals 5,050. That 5,050 is the single most-watched number in the statements, and it will reappear on the balance sheet through retained earnings.

Every one of those five numbers came from somewhere specific, and it is worth tracing them so the statement stops looking like an assertion. Go back to the adjusted trial balance in Module 3. Service Revenue 10,000 credit; Wages Expense 3,000 debit; Rent Expense 1,000 debit; Supplies Expense 800 debit; Depreciation Expense 150 debit. Those are the only revenue and expense accounts in the ledger, and each one appears here unchanged.

Notice equally what did not come across. Cash of 19,700, the 9,000 of equipment, the 5,000 note payable, and the 500 of dividends are all in the adjusted trial balance and none of them is on this statement. Cash and equipment are assets, the note is a liability, and dividends are a distribution to owners rather than a cost of doing business. Sorting the adjusted trial balance into the right statement is most of the work of preparing financial statements, and the sorting rule is simply the account type.

Key idea: Add all expenses, subtract from revenue, and the remainder is net income, the figure that carries into equity.

Single-step and multi-step formats

The statement above is single-step: one revenue total, one expense total, one subtraction. A company that sells goods (a merchandiser) usually uses a multi-step format that first subtracts the cost of goods sold, the direct cost of the merchandise sold, from sales to show gross profit, then subtracts operating expenses. Consider a bike shop, Bright Bikes:

Bright Bikes - Income Statement (multi-step)
Sales revenue	250,000
Cost of goods sold	(150,000)
Gross profit	100,000
Operating expenses	(68,000)
Operating income	32,000
Interest expense	(2,000)
Income before tax	30,000
Income tax expense (20 percent)	(6,000)
Net income	24,000

Every subtotal tells a story: gross profit of 100,000 shows how much the products themselves earn (250,000 minus 150,000), operating income of 32,000 shows how the core business performs before financing and tax (100,000 minus 68,000), and net income of 24,000 is the bottom line the owners keep (30,000 minus the 6,000 tax). Note that the income statement contains no cash balances and no debts; performance, not position, is its job.

Where does the 150,000 of cost of goods sold come from? Not from a single account that anyone maintains by hand. Under a periodic system it is computed from three figures: beginning inventory, plus purchases during the year, minus ending inventory. If Bright Bikes started the year with 40,000 of bicycles, bought 155,000 more, and counted 45,000 still on the floor at year end, then cost of goods sold is 40,000 plus 155,000 minus 45,000, which equals 150,000. The logic is simply that whatever you had and whatever you bought either sold or is still there.

That formula is also the reason inventory errors distort profit so directly. Overstate ending inventory by 5,000 and cost of goods sold falls by 5,000, so gross profit and net income both rise by 5,000 with no sale having occurred. This is a well-known route to overstated earnings, which is why physical inventory counts are one of the procedures external auditors attend in person.

Reading the subtotals as percentages

Absolute subtotals are hard to compare across years or companies, so analysts convert each to a percentage of sales. For Bright Bikes: gross margin is 100,000 divided by 250,000, which equals 40%; operating margin is 32,000 divided by 250,000, which equals 12.8%; net margin is 24,000 divided by 250,000, which equals 9.6%.

Now the statement can answer diagnostic questions. If next year gross margin falls to 34% while operating margin holds, the problem is in pricing or product cost, not in overheads. If gross margin holds at 40% and operating margin drops to 8%, the products are fine and operating costs have grown. If both hold but net margin falls, look at interest and tax rather than at operations. Three subtotals, three different places to look, which is precisely why the multi-step format exists.

One more line matters for corporations with outside shareholders. Earnings per share divides net income by the weighted average number of common shares outstanding. If Bright Bikes has 12,000 shares, EPS is 24,000 divided by 12,000, which equals 2.00 per share. Public companies are required to present EPS on the face of the income statement under both U.S. GAAP and IFRS; private companies generally are not.

Where GAAP and IFRS present things differently

The measurement of profit is largely the same under both systems, but presentation differs in ways that surprise readers of foreign statements. IAS 1 lets a company analyse expenses either by nature - depreciation, employee benefits, raw materials - or by function, which is the cost-of-sales format used above; U.S. filings are almost always by function. Both systems now prohibit labelling anything an extraordinary item: IAS 1 forbids it outright, and U.S. GAAP eliminated the concept in 2015. And because IFRS bars the LIFO inventory method that U.S. GAAP permits, two otherwise identical companies can report different cost of goods sold and therefore different gross profit purely because of where they are listed.

Key idea: A multi-step statement reveals gross profit and operating income, showing where a merchandiser's profit comes from before the bottom line.

Common wrong turns

• "Net income is the cash the company made." Net income is an accrual figure; a company can earn income while its cash falls, which is why a separate cash-flow statement exists.
• "Gross profit is the final profit." Gross profit is only sales minus cost of goods sold; operating expenses, interest, and tax still come out below it.
• "The income statement shows what the company owns." Assets and debts belong on the balance sheet; the income statement shows performance over a period.
• "Dividends are an expense on the income statement." Dividends are a distribution to owners and appear in the statement of retained earnings, not as an expense.
• "Cost of goods sold is whatever we spent on stock this year." It is beginning inventory plus purchases minus ending inventory, so a year of heavy buying and light selling produces a small cost of goods sold and a large inventory balance.
• "An inventory miscount only affects the balance sheet." It flows straight through cost of goods sold into profit, which is why auditors observe physical counts.
• "Two companies reporting the same profit performed the same." Inventory method, depreciation estimates, and whether the firm reports under GAAP or IFRS can all move the figure without any difference in operations.

Try it

A retailer reports sales of 640,000. Beginning inventory was 82,000, purchases were 388,000, and ending inventory is 70,000. Operating expenses are 148,000, interest is 9,000, and tax is 25% of pre-tax income. There are 30,000 shares outstanding. (a) Compute cost of goods sold. (b) Prepare the multi-step figures down to net income. (c) Compute gross, operating, and net margins. (d) Compute earnings per share.

Answer: (a) 82,000 plus 388,000 minus 70,000, which equals 400,000. (b) Gross profit is 640,000 minus 400,000, which equals 240,000; operating income is 240,000 minus 148,000, which equals 92,000; pre-tax income is 92,000 minus 9,000, which equals 83,000; tax is 83,000 times 0.25, which equals 20,750; net income is 83,000 minus 20,750, which equals 62,250. (c) Gross margin is 240,000 divided by 640,000, which equals 37.5%; operating margin is 92,000 divided by 640,000, which equals 14.4%; net margin is 62,250 divided by 640,000, which equals 9.7%. (d) 62,250 divided by 30,000, which equals 2.08 per share.

Recap

• The income statement measures performance over a period as Revenues minus Expenses equals Net Income.
• Every line traces directly to a revenue or expense account on the adjusted trial balance.
• Net income (or net loss) is the bottom line and flows into retained earnings.
• A single-step statement uses one revenue total and one expense total.
• A multi-step statement shows gross profit and operating income, useful for merchandisers.
• Cost of goods sold is beginning inventory plus purchases minus ending inventory.
• Gross, operating, and net margins each point to a different place to look when profit moves.
• The income statement reports performance, not the assets and debts on the balance sheet.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Prepare financial statements using the adjusted trial balance. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe and prepare multi-step and simple income statements for merchandising companies. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Calculate the cost of goods sold and ending inventory using the periodic method. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Explain and demonstrate the impact of inventory valuation errors on the income statement and balance sheet. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Discuss the applicability of earnings per share as a method to measure performance. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. IFRS Foundation. (n.d.). IAS 2 Inventories. IFRS Accounting Standards Navigator. ifrs.org
7. Financial Accounting Standards Board. (2015). Accounting Standards Update No. 2015-01, Income statement - extraordinary and unusual items (Subtopic 225-20). FASB. find source ↗

The big picture

An income statement can be argued about. A balance sheet has to add up. If the two sides of this report do not match to the cent, something is wrong somewhere in a chain of work stretching back to the first journal entry, and the report itself tells you so.

The balance sheet is a snapshot of what a business owns and owes on a single day. It is the accounting equation made into a report, and when its two sides match, it proves the whole cycle you have worked through, from the first journal entry to the final statement, was done correctly. Lenders and investors read it to judge financial strength, so it is the statement of a company's condition.

What it reports

The balance sheet (also called the statement of financial position) shows assets on one side, liabilities and equity on the other, always equal. Because it captures one instant, its heading names a date, such as "June 30," not a period. Where the income statement is a video of performance over time, the balance sheet is a photograph of position at a moment.

Key idea: The balance sheet is a single-date snapshot in which Assets equal Liabilities plus Equity.

First, the bridge: retained earnings

Before we can finish the equity section we need one link. Net income from the income statement does not vanish; it accumulates in an equity account called retained earnings, the total profit a company has kept rather than paid out as dividends. The statement of retained earnings shows the roll-forward from the beginning balance to the end:

Beginning retained earnings	0
Add: net income	5,050
Less: dividends	(500)
Ending retained earnings	4,550

Maple Lawn Care is new, so it began with 0 retained earnings. It earned 5,050 and paid a 500 dividend, leaving 0 plus 5,050 minus 500, which equals 4,550.

Key idea: Net income raises retained earnings and dividends lower it, so ending retained earnings is beginning plus net income minus dividends.

Maple Lawn Care's balance sheet

Now assemble the snapshot. A classified balance sheet groups assets into current (cash and items expected to become cash within a year) and long-term. A current asset is cash or something expected to turn into cash or be used within a year, such as receivables and supplies. Equipment appears at its cost less accumulated depreciation.

Maple Lawn Care, Inc. - Balance Sheet June 30
Assets
Cash	19,700
Accounts receivable	1,000
Supplies	400
Equipment	9,000
Less: accumulated depreciation	(150)
Total assets	29,950
Liabilities
Accounts payable	400
Notes payable	5,000
Total liabilities	5,400
Equity
Common stock	20,000
Retained earnings	4,550
Total equity	24,550
Total liabilities and equity	29,950

Check the equation. Assets are 19,700 plus 1,000 plus 400 plus (9,000 minus 150), which equals 29,950. Liabilities plus equity are 5,400 plus (20,000 plus 4,550), which also equals 29,950. The two sides match at 29,950, so the balance sheet balances, the proof that the whole cycle, from journal entry to statement, was done correctly.

Grouped into the classified form, the same figures give the subtotals a lender actually reads. Current assets are cash 19,700 plus receivable 1,000 plus supplies 400, which equals 21,100. Property and equipment, net of accumulated depreciation, is 9,000 minus 150, which equals 8,850, and 21,100 plus 8,850 equals 29,950. On the other side, both liabilities are due within twelve months, so current liabilities are 400 plus 5,000, which equals 5,400, with nothing long-term. Those subtotals are the raw material for the ratio lesson that closes the course.

Key idea: A finished balance sheet must have total assets equal to total liabilities plus equity, and that equality is the cycle's built-in check.

Closing the books

The balance sheet you just built is dated 30 June, and July has to start somewhere. Revenue, expense, and dividend accounts must go back to zero so that July's income statement measures July alone, while assets, liabilities, and equity carry forward untouched. That reset is done deliberately with closing entries, recorded after the statements are prepared.

The transfer runs through a temporary holding account called Income Summary, which exists only during the closing process. There are four steps, and each is an ordinary balanced journal entry.

Step 1 - close revenue. Service Revenue carries a 10,000 credit balance, so debit it to zero and credit the holding account: Dr Service Revenue 10,000; Cr Income Summary 10,000.

Step 2 - close the expenses. Each expense carries a debit balance, so credit each to zero and debit Income Summary for the total: Dr Income Summary 4,950; Cr Wages Expense 3,000; Cr Rent Expense 1,000; Cr Supplies Expense 800; Cr Depreciation Expense 150. Check the credits: 3,000 plus 1,000 plus 800 plus 150 equals 4,950, matching the single debit.

Step 3 - close Income Summary. The holding account now has a 10,000 credit and a 4,950 debit, leaving a credit balance of 10,000 minus 4,950, which equals 5,050 - exactly net income, as it must be. Transfer it to permanent equity: Dr Income Summary 5,050; Cr Retained Earnings 5,050. Income Summary is now zero and disappears until next period.

Step 4 - close Dividends. Dividends carry a 500 debit balance and are not an expense, so they are closed straight to equity rather than through Income Summary: Dr Retained Earnings 500; Cr Dividends 500.

Follow Retained Earnings through all of that. It began at 0, was credited 5,050 in step 3, and debited 500 in step 4, ending at 0 plus 5,050 minus 500, which equals 4,550 - the same figure the statement of retained earnings produced and the same figure printed on the balance sheet above. The closing entries did not create that number; they simply put it where it belongs.

Key idea: Closing entries zero the temporary accounts through Income Summary and move the period's result into Retained Earnings, leaving only permanent accounts open.

The post-closing trial balance

One last proof. After closing, a post-closing trial balance is drawn up, and it should contain permanent accounts only - no revenue, no expense, no dividends, and no Income Summary.

Account	Debit	Credit
Cash	19,700
Accounts Receivable	1,000
Supplies	400
Equipment	9,000
Accumulated Depreciation		150
Accounts Payable		400
Notes Payable		5,000
Common Stock		20,000
Retained Earnings		4,550
Totals	30,100	30,100

Debits are 19,700 plus 1,000 plus 400 plus 9,000, which equals 30,100. Credits are 150 plus 400 plus 5,000 plus 20,000 plus 4,550, which equals 30,100. The columns agree, and these are precisely the opening balances for 1 July.

One detail catches people out. This trial balance totals 30,100 while the balance sheet reported total assets of 29,950. Both are right. The trial balance lists Accumulated Depreciation of 150 in the credit column as its own account, whereas the balance sheet nets it against Equipment. The difference is exactly 30,100 minus 29,950, which equals 150 - the contra-asset, counted once on each report but presented differently.

Key idea: A post-closing trial balance contains only permanent accounts, and its totals differ from total assets by the amount of any contra-asset shown separately.

How the statements connect

Notice how the pieces lock together. Net income of 5,050 came from the income statement, flowed through the statement of retained earnings to become part of the 4,550 ending retained earnings, and that figure now sits in equity on the balance sheet. This linkage, income statement to retained earnings to balance sheet, is called articulation, and it is why the statements can never disagree when the work is done right.

Key idea: The statements articulate: net income feeds retained earnings, which feeds equity on the balance sheet.

Common wrong turns

• "The balance sheet shows the company's market value." Assets are largely recorded at historical cost, so the balance sheet rarely equals what the business would sell for.
• "Retained earnings is a pile of cash." It is a claim built from kept profits; the actual cash may have been spent on equipment or receivables.
• "Depreciation removes the asset from the balance sheet." The asset stays at cost, reduced by accumulated depreciation shown as a contra-asset.
• "A balance sheet can be out of balance if the business had a bad year." It always balances by construction; if it does not, there is a recording error.
• "Closing entries change net income." They move it. Net income is already fixed by the income statement; closing simply transfers it into Retained Earnings and resets the temporary accounts.
• "Dividends close through Income Summary with the expenses." They do not. Dividends are not a cost of earning revenue, so they close directly to Retained Earnings.
• "Under IFRS the balance sheet works differently." The equation and the closing process are the same. What differs is the name, the usual presentation order, and specific measurement rules such as revaluation and impairment reversal.

Where GAAP and IFRS differ on the balance sheet

Three differences matter enough to know at this level. First, IFRS calls this report the statement of financial position and often presents non-current assets first, while U.S. practice leads with cash. Second, IAS 16 permits property, plant, and equipment to be carried at a revalued fair value, whereas U.S. GAAP holds it at historical cost less depreciation, so an identical building can appear at very different amounts. Third, if an asset other than goodwill has been written down for impairment and conditions later improve, IAS 36 requires the write-down to be reversed, while U.S. GAAP prohibits any reversal - meaning the same recovery shows up in one company's numbers and never in the other's. As always, this is an outline for reading statements rather than professional guidance on preparing them.

Try it

At year end a company's adjusted balances are: Service Revenue 84,000; Wages Expense 39,000; Rent Expense 12,000; Utilities Expense 5,400; Depreciation Expense 3,600; Dividends 6,000; beginning Retained Earnings 21,000. (a) Write the four closing entries with amounts. (b) What is the Income Summary balance after steps 1 and 2, and what does it equal? (c) What is ending Retained Earnings? (d) Which of these accounts appear on the post-closing trial balance?

Answer: (a) Step 1: Dr Service Revenue 84,000; Cr Income Summary 84,000. Step 2: expenses total 39,000 plus 12,000 plus 5,400 plus 3,600, which equals 60,000, so Dr Income Summary 60,000; Cr Wages Expense 39,000; Cr Rent Expense 12,000; Cr Utilities Expense 5,400; Cr Depreciation Expense 3,600. Step 3: Dr Income Summary 24,000; Cr Retained Earnings 24,000. Step 4: Dr Retained Earnings 6,000; Cr Dividends 6,000. (b) A credit balance of 84,000 minus 60,000, which equals 24,000 - exactly net income. (c) 21,000 plus 24,000 minus 6,000, which equals 39,000. (d) Only Retained Earnings, at 39,000. Every other account listed is temporary and now stands at zero.

Recap

• The balance sheet is a single-date snapshot with Assets = Liabilities + Equity.
• Retained earnings links the statements: beginning balance plus net income minus dividends.
• A classified balance sheet separates current from long-term items; here current assets are 21,100 and current liabilities 5,400.
• Equipment is shown at cost less accumulated depreciation.
• Closing entries zero revenue, expense, and dividend accounts through Income Summary and into Retained Earnings.
• The post-closing trial balance contains permanent accounts only and totals 30,100 for this company.
• When total assets equal total liabilities plus equity, the cycle checks out.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Prepare an income statement, statement of owner's equity, and balance sheet. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe and prepare closing entries for a business. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Prepare a post-closing trial balance. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Compare and contrast owners' equity versus retained earnings. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe some special issues in accounting for long-term assets. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. IFRS Foundation. (n.d.). IAS 1 Presentation of Financial Statements. IFRS Accounting Standards Navigator. ifrs.org
7. Financial Accounting Standards Board. (n.d.). Accounting Standards Codification, Topic 360-10: Impairment or disposal of long-lived assets. FASB. find source ↗

The big picture

There is an old auditor's remark that profit is an opinion and cash is a fact. Income depends on estimates of useful lives, collectability, and when an obligation was satisfied. The bank balance depends on none of those. That is why this statement is prepared, and why experienced readers often turn to it first.

A company can be profitable on the income statement yet still run out of cash, because accrual accounting records revenue before the cash arrives and expenses before they are paid. The statement of cash flows exists to catch exactly that problem. Cash is what pays the bills, so this statement is often the one lenders and managers watch most closely, and it completes the set of core statements.

Why a separate statement

The statement of cash flows reports only actual cash coming in and going out over the period, sorted into three activities. It answers the blunt question the other statements skip: where did the cash come from, and where did it go? Because it strips out accruals, it shows the raw movement of cash that keeps a business alive.

Key idea: The cash-flow statement tracks real cash in and out over a period, closing the gap between net income and the bank balance.

The three sections

• Operating activities are cash flows from the day-to-day business: cash from customers, cash paid to employees and suppliers, and cash for rent.
• Investing activities are cash flows from buying or selling long-term assets, such as equipment.
• Financing activities are cash flows from owners and lenders: issuing stock, borrowing, repaying loans, and paying dividends.

Key idea: Operating is the core business, investing is long-term assets, and financing is owners and lenders.

Maple Lawn Care's cash flows

We can build the statement directly from the eleven transactions, listing each that moved cash. This is the direct method, which shows cash receipts and payments plainly.

Maple Lawn Care, Inc. - Statement of Cash Flows For the Month Ended June 30
Operating activities
Cash received from customers (7,500 + 1,500)	9,000
Cash paid to employees	(3,000)
Cash paid for rent	(1,000)
Cash paid to suppliers	(800)
Net cash from operating activities	4,200
Investing activities
Purchase of equipment	(9,000)
Net cash from investing activities	(9,000)
Financing activities
Issued common stock	20,000
Borrowed on note payable	5,000
Paid dividends	(500)
Net cash from financing activities	24,500
Net increase in cash	19,700
Cash at beginning of month	0
Cash at end of month	19,700

Add the three section totals: 4,200 minus 9,000 plus 24,500 equals 19,700. Operating cash is 9,000 minus 3,000 minus 1,000 minus 800, which is 4,200; financing is 20,000 plus 5,000 minus 500, which is 24,500. Starting from 0 cash, the month ends with 19,700.

Key idea: The net change in cash is the sum of the operating, investing, and financing totals for the period.

The indirect method: reconciling profit to cash

Almost every company you will ever read reports the operating section a different way. The indirect method starts from net income and adjusts it back to cash, which has the advantage of explaining the gap rather than merely reporting a different number. Three kinds of adjustment are needed: add back non-cash expenses, subtract increases in operating assets, and add increases in operating liabilities.

Run it for Maple Lawn Care, starting from the 5,050 of net income already computed.

Line	Amount
Net income	5,050
Add: depreciation expense (non-cash)	150
Less: increase in accounts receivable	(1,000)
Less: increase in supplies	(400)
Add: increase in accounts payable	400
Net cash from operating activities	4,200

Take each line in turn. Depreciation of 150 reduced profit but moved no cash, so it comes straight back. Accounts receivable rose from 0 to 1,000, which means 1,000 of recorded revenue was never collected, so subtract it. Supplies rose from 0 to 400, cash spent on goods still sitting on the shelf, so subtract that too. Accounts payable rose from 0 to 400, meaning the supplier is temporarily financing that much, so add it back.

The arithmetic: 5,050 plus 150 equals 5,200; minus 1,000 equals 4,200; minus 400 equals 3,800; plus 400 equals 4,200. That is exactly the 4,200 the direct method produced from listing receipts and payments. The two methods must agree, because they are two descriptions of the same cash.

What the indirect version adds is the explanation. Net income was 5,050 and operating cash was 4,200, a shortfall of 850, and now you can see precisely where it went: 1,000 tied up in unpaid invoices and 400 in unused supplies, partly offset by 400 of supplier credit and 150 of depreciation added back. For a growing company those first two lines only get larger, which is how a profitable business runs out of money.

Key idea: The indirect method starts from net income, adds back non-cash expenses, and adjusts for changes in operating assets and liabilities to arrive at the same operating cash figure.

Reading the three signs together

The most useful thing about this statement is not any single total but the pattern of the three. Maple Lawn Care reported operating 4,200 positive, investing 9,000 negative, and financing 24,500 positive. That combination - modest operating cash, heavy asset purchases, and large financing inflows - is the signature of a young company being built with outside money, which is exactly what it is.

Other patterns tell other stories. Operating strongly positive, investing negative, and financing negative describes a mature company funding its own expansion and returning cash to lenders and owners. Operating negative, investing positive, and financing negative is the uncomfortable one: the business is losing cash, selling assets to cover it, and repaying debt with the proceeds. No income statement conveys that in a single glance.

A common summary measure combines two of the sections. Free cash flow is operating cash flow less the cash spent on long-term assets: here 4,200 minus 9,000, which equals negative 4,800. A negative figure is normal and expected in a first month of heavy investment; a mature company that reports it year after year is a different matter.

Classification: one of the larger GAAP-IFRS gaps

Both systems require this statement and both allow the direct or indirect method, but they disagree about where several common items belong. Under U.S. GAAP the classifications are fixed: interest paid and interest received are operating, dividends received are operating, and dividends paid are financing. IAS 7 instead permits a choice, consistently applied: interest paid may sit in operating or financing, interest and dividends received in operating or investing, and dividends paid in operating or financing.

The consequence is practical. Two identical companies can report materially different operating cash flow purely because one moved interest payments into the financing section. IFRS also permits bank overdrafts repayable on demand to be treated as part of cash and cash equivalents where they form an integral part of cash management, while U.S. GAAP treats them as liabilities. Anyone comparing cash-flow statements across borders has to read the accounting policy note first.

Key idea: U.S. GAAP fixes the classification of interest and dividends while IAS 7 allows a policy choice, so operating cash flow is not automatically comparable across the two systems.

The built-in check

That 19,700 is exactly the Cash balance on the balance sheet. This match is the built-in check on the whole statement: the net change in cash must reconcile to the cash on the balance sheet. Notice too that the two adjusting entries, supplies used and depreciation, never appear here, because no cash moved; they are on the income statement, not this one. That is the clearest illustration of the difference between profit and cash.

Key idea: The ending cash on this statement must equal the Cash line on the balance sheet, and non-cash items like depreciation are excluded.

Common wrong turns

• "Net income equals cash from operations." They usually differ because of accruals like receivables, payables, and depreciation.
• "Depreciation is a cash outflow." Depreciation moves no cash; it is a non-cash expense that never appears on the cash-flow statement as a payment.
• "Buying equipment is an operating outflow." Purchasing a long-term asset is an investing activity, not operating.
• "A profitable company can never run short of cash." It can, which is precisely why this statement is prepared.
• "The indirect method gives a different answer from the direct method." It gives the same operating total by a different route, as the 4,200 above shows.
• "An increase in accounts payable is bad news." For cash flow it is a source: the supplier is financing the business for now. Whether that is prudent is a separate question.
• "Negative free cash flow means the company is failing." It means investment exceeded operating cash this period, which is normal while a business is being built and worrying only if it persists.

Try it

A company reports net income of 46,000, depreciation of 8,000, an increase in accounts receivable of 11,000, a decrease in inventory of 4,000, and an increase in accounts payable of 3,000. It bought equipment for 30,000, borrowed 20,000, and paid dividends of 9,000. Cash at the start of the year was 12,000. (a) Compute operating cash flow by the indirect method. (b) Compute investing and financing totals. (c) What is the net change in cash and the ending balance? (d) Compute free cash flow and comment.

Answer: (a) 46,000 plus 8,000 equals 54,000; minus 11,000 equals 43,000; plus 4,000 equals 47,000; plus 3,000 equals 50,000. (b) Investing is negative 30,000. Financing is 20,000 minus 9,000, which equals positive 11,000. (c) The net change is 50,000 minus 30,000 plus 11,000, which equals 31,000, so ending cash is 12,000 plus 31,000, which equals 43,000. (d) Free cash flow is 50,000 minus 30,000, which equals 20,000. The business funded all of its investment from operations and still had 20,000 left, so the borrowing was optional rather than necessary.

Recap

• The statement of cash flows reports actual cash movement over a period.
• It has three sections: operating, investing, and financing activities.
• The direct method lists cash receipts and payments plainly.
• The indirect method starts from net income and adjusts for non-cash items and working-capital changes, reaching the same total.
• Free cash flow is operating cash flow less spending on long-term assets.
• The pattern of signs across the three sections identifies a startup, a mature firm, or a distressed one.
• U.S. GAAP fixes where interest and dividends are classified while IAS 7 allows a choice.
• Ending cash must reconcile to the Cash balance on the balance sheet, and non-cash items are excluded.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Explain the purpose of the statement of cash flows. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Differentiate between operating, investing, and financing activities. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Prepare the statement of cash flows using the indirect method. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Appendix: Prepare a completed statement of cash flows using the direct method. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Use information from the statement of cash flows to prepare ratios to assess liquidity and solvency. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. IFRS Foundation. (n.d.). IAS 7 Statement of Cash Flows. IFRS Accounting Standards Navigator. ifrs.org
7. Financial Accounting Standards Board. (n.d.). Accounting Standards Codification, Topic 230: Statement of cash flows. FASB. find source ↗

The big picture

You have now built every statement from the first journal entry. The last skill is different in kind: not producing numbers but interrogating them. A ratio is a question in numerical form, and the useful ones are the questions a lender, an owner, or a competitor would actually ask.

Finished statements are full of numbers, but numbers alone can be hard to judge: is 5,050 of profit good? Ratio analysis turns those raw figures into meaningful relationships you can compare and act on. This is the payoff of the whole course, because it is where a stack of statements finally becomes insight about a real business.

Why ratios

Ratio analysis divides one statement figure by another to reveal a relationship that raw dollars hide. Ratios let you compare a company with its own past, with rivals of different sizes, or with an industry norm. They fall into three families: liquidity (can it pay bills soon?), solvency (can it survive its long-term debt?), and profitability (is it making good money?). We will compute each from Maple Lawn Care's finished statements.

Key idea: Ratios express relationships between figures, making companies of different sizes and different years comparable.

Liquidity: the current ratio

Liquidity is a company's ability to pay its short-term obligations as they come due. The current ratio measures it by comparing current assets to current liabilities: current assets divided by current liabilities.

For Maple Lawn Care, current assets are cash 19,700 plus receivable 1,000 plus supplies 400, which is 21,100, and current liabilities are 5,400. The ratio is 21,100 divided by 5,400, which equals 3.91. A current ratio of 3.91 means the company has 3.91 dollars of short-term assets for every 1 dollar of short-term debt, which is very comfortable. As a rough guide, a current ratio above 1.0 means current assets cover current debts, and many analysts like to see roughly 1.5 to 2.0.

Two companions sharpen the picture. Working capital is the same comparison stated in dollars rather than as a ratio: current assets minus current liabilities, or 21,100 minus 5,400, which equals 15,700. The ratio says the cushion is comfortable; the dollar figure says how large the cushion actually is, which matters because a ratio of 3.91 means something very different on 21,100 of current assets than on 21,100,000.

The quick ratio, sometimes called the acid test, is stricter. It excludes anything that cannot be turned into cash quickly - inventory and supplies in particular - and divides only cash and receivables by current liabilities: 19,700 plus 1,000, which equals 20,700, divided by 5,400, which equals 3.83. The small gap between 3.91 and 3.83 tells you Maple Lawn Care holds almost nothing illiquid. A retailer with warehouses full of stock would show a far wider gap, and for such a firm the quick ratio is the honest one.

Key idea: The current ratio is current assets divided by current liabilities, and above 1.0 means short-term assets cover short-term debts.

Efficiency: how fast the working capital turns

Liquidity ratios ask whether the assets are there. Efficiency ratios ask how quickly they move, which is often the more revealing question. Because these need a full year, use Bright Bikes from the income-statement lesson: sales 250,000, cost of goods sold 150,000, average receivables 22,000, and average inventory 42,500 - the midpoint of its 40,000 opening and 45,000 closing stock.

Receivables turnover is sales divided by average receivables: 250,000 divided by 22,000, which equals 11.36 times a year. Converting that to days, days sales outstanding is 365 divided by 11.36, which equals 32 days. On average, a sale sits as an unpaid invoice for about a month. If the stated terms are 30 days, collections are working; if the terms are 15 days, they are not.

Inventory turnover is cost of goods sold divided by average inventory, so 150,000 divided by 42,500, which equals 3.53 times. In days that is 365 divided by 3.53, which equals 103 days - a bicycle sits on the floor for over three months before it sells. That is unremarkable for bicycles and would be a catastrophe for fresh food, which is the point: efficiency ratios only mean something against an industry.

Note that inventory turnover uses cost of goods sold rather than sales, because inventory is carried at cost. Dividing sales by inventory mixes a retail-price numerator with a cost denominator and inflates the ratio for no reason.

Key idea: Receivables and inventory turnover convert balance-sheet amounts into days, showing how long cash stays tied up before it comes back.

Solvency: debt-to-assets

Solvency is the ability to meet long-term obligations and survive over time. The debt-to-assets ratio shows how much of the company is financed by debt: total liabilities divided by total assets. Here that is 5,400 divided by 29,950, which equals 0.18, or 18 percent. Only 18 cents of every dollar of assets is funded by creditors; the other 82 cents comes from the owners. A lower ratio generally signals less financial risk.

Key idea: Debt-to-assets is total liabilities divided by total assets, and a lower figure means less reliance on borrowed money.

Profitability: margin and return on equity

The net profit margin is net income divided by revenue: 5,050 divided by 10,000, which equals 0.505, or 50.5 percent. The company keeps about 50.5 cents of profit from every sales dollar, which is strong for a service business with few costs. Return on equity, or ROE, measures profit against the owners' investment: net income divided by total equity, which is 5,050 divided by 24,550, equal to 0.206, or 20.6 percent. Each dollar of equity generated about 20.6 cents of profit this period.

Ratio	Formula	Maple Lawn Care	Reads as
Current ratio	Current assets / current liabilities	21,100 / 5,400 = 3.91	Liquidity
Debt-to-assets	Total liabilities / total assets	5,400 / 29,950 = 18 percent	Solvency
Net profit margin	Net income / revenue	5,050 / 10,000 = 50.5 percent	Profitability
Return on equity	Net income / total equity	5,050 / 24,550 = 20.6 percent	Profitability

Key idea: Net profit margin is profit per sales dollar, and return on equity is profit per dollar of owners' investment.

Taking return on equity apart

A 20.6% return on equity is a single number hiding three different business decisions. The DuPont decomposition separates them by writing return on equity as three ratios multiplied together: net margin, times asset turnover, times the equity multiplier.

Compute each for Maple Lawn Care. Net margin is net income over revenue: 5,050 divided by 10,000, which equals 0.505. Asset turnover is revenue over total assets: 10,000 divided by 29,950, which equals 0.334, meaning each dollar of assets produced about 33 cents of revenue this month. The equity multiplier is total assets over total equity: 29,950 divided by 24,550, which equals 1.220, a measure of how much the asset base is levered above the owners' own money.

Multiply: 0.505 times 0.334 equals 0.1687, and 0.1687 times 1.220 equals 0.206, or 20.6% - the return on equity computed directly a moment ago. The identity is exact, since revenue and total assets each appear once on the top and once on the bottom and cancel.

What the decomposition buys you is diagnosis. A firm can reach 20% return on equity by earning a fat margin on slow-moving goods, by earning a thin margin on fast-moving goods, or by borrowing heavily. Maple Lawn Care's 20.6% comes almost entirely from margin, since asset turnover is low and leverage is mild. A supermarket reaching the same 20.6% would show the mirror image: a 2% margin, high turnover, and a larger multiplier. The headline number is identical and the two businesses have nothing in common.

It also flags a trap. Because the equity multiplier sits in the product, a company can raise return on equity simply by taking on debt, with no operational improvement whatever - and with more risk. Reading return on equity without looking at leverage is how that trick goes unnoticed.

Key idea: Return on equity equals net margin times asset turnover times the equity multiplier, so the same headline return can come from pricing, from speed, or from borrowing.

Context is everything

One caution: a ratio is only meaningful in context. A current ratio of 3.91 is healthy for most firms but might mean idle cash for another; a margin of 50.5 percent is great for services but unheard of in grocery retail. Always compare a ratio to something, the company's own trend, a competitor, or the industry, before you judge it. That habit, turning statements into questions, is the reward of the whole accounting cycle you have now completed.

Two further cautions belong here, and the second is easy to miss. First, ratios inherit every estimate underneath them. A firm that depreciates equipment over ten years rather than five reports lower expense, higher net income, and a higher book value of assets, which moves margin, return on equity, and debt-to-assets all at once - without anything real having changed.

Second, the accounting framework itself affects comparability. Consider two identical retailers in a period of rising prices, one reporting under U.S. GAAP using LIFO and one under IFRS, which prohibits LIFO and so uses FIFO. The LIFO firm charges its newest, dearest goods to cost of goods sold, so it reports higher cost of goods sold, lower gross margin, lower net income, and a lower closing inventory figure. That lower inventory then reduces its current ratio and raises its inventory turnover. Nothing about the two businesses differs; only the standard-setter does. This is why serious cross-border comparison starts with the accounting policy note, and why the numbers taught in this course are a starting point for judgement rather than a verdict. As always, this material is education rather than professional accounting advice.

Key idea: A ratio means little on its own; judge it against the company's history, competitors, or industry norms.

Common wrong turns

• "A higher current ratio is always better." Very high ratios can signal idle cash or excess inventory rather than strength.
• "One ratio tells the whole story." Liquidity, solvency, and profitability each capture a different dimension, so a full picture needs several ratios.
• "Ratios are comparable across any two companies." Only firms in similar industries compare cleanly, since normal levels differ by business model.
• "Net profit margin and return on equity measure the same thing." Margin is profit per sales dollar; ROE is profit per dollar of owners' equity, and they can move in opposite directions.
• "Inventory turnover uses sales." It uses cost of goods sold, because inventory is carried at cost. Using sales mixes a retail numerator with a cost denominator.
• "A rising return on equity always means better management." The equity multiplier is one of its three components, so simply borrowing more raises it without any operational improvement.
• "Two companies with the same ratios are comparable." Depreciation estimates and inventory methods change the inputs. A LIFO firm under U.S. GAAP and a FIFO firm under IFRS can look different while operating identically.

Try it

A company reports current assets of 96,000 including 34,000 of inventory and 6,000 of prepaid items, current liabilities of 40,000, total assets of 260,000, total liabilities of 130,000, revenue of 480,000, cost of goods sold of 300,000, and net income of 26,000. Average inventory was 30,000 and average receivables 48,000. (a) Compute the current ratio, quick ratio, and working capital. (b) Compute debt-to-assets. (c) Compute inventory turnover, days inventory, receivables turnover, and days sales outstanding. (d) Compute net margin, asset turnover, and the equity multiplier, and confirm they multiply to return on equity.

Answer: (a) Current ratio is 96,000 divided by 40,000, which equals 2.40. Quick assets are 96,000 minus 34,000 minus 6,000, which equals 56,000, so the quick ratio is 56,000 divided by 40,000, which equals 1.40. Working capital is 96,000 minus 40,000, which equals 56,000. (b) 130,000 divided by 260,000, which equals 50%. (c) Inventory turnover is 300,000 divided by 30,000, which equals 10 times, so days inventory is 365 divided by 10, which equals 36.5 days. Receivables turnover is 480,000 divided by 48,000, which equals 10 times, so days sales outstanding is also 36.5 days. (d) Net margin is 26,000 divided by 480,000, which equals 5.42%; asset turnover is 480,000 divided by 260,000, which equals 1.846; equity is 260,000 minus 130,000, which equals 130,000, so the equity multiplier is 260,000 divided by 130,000, which equals 2.00. Multiplying: 0.0542 times 1.846 equals 0.1000, and 0.1000 times 2.00 equals 20.0%. Checking directly, 26,000 divided by 130,000 equals 20.0%, so the decomposition agrees.

Recap

• Ratio analysis divides one figure by another to reveal relationships and enable comparison.
• The current ratio (current assets over current liabilities) gauges short-term liquidity, and the quick ratio excludes inventory for a stricter test.
• Working capital states the same cushion in dollars rather than as a ratio.
• Receivables and inventory turnover convert balances into days, showing how long cash is tied up.
• Debt-to-assets (total liabilities over total assets) gauges solvency and financial risk.
• Net profit margin and return on equity gauge profitability from two angles.
• Return on equity decomposes into net margin, asset turnover, and the equity multiplier.
• Every ratio must be read against a trend, a competitor, or an industry norm, and against the accounting policies underneath it.

Sources

1. Franklin, M., Graybeal, P., & Cooper, D. (2019). Apply the results from the adjusted trial balance to compute current ratio and working capital balance, and explain how these measures represent liquidity. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
2. Franklin, M., Graybeal, P., & Cooper, D. (2019). Determine the efficiency of receivables management using financial ratios. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
3. Franklin, M., Graybeal, P., & Cooper, D. (2019). Examine the efficiency of inventory management using financial ratios. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
4. Franklin, M., Graybeal, P., & Cooper, D. (2019). Use information from the statement of cash flows to prepare ratios to assess liquidity and solvency. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
5. Franklin, M., Graybeal, P., & Cooper, D. (2019). Describe and demonstrate the basic inventory valuation methods and their cost flow assumptions. In Principles of Accounting, Volume 1: Financial Accounting. OpenStax, Rice University. openstax.org
6. IFRS Foundation. (n.d.). IAS 2 Inventories. IFRS Accounting Standards Navigator. ifrs.org
7. U.S. Securities and Exchange Commission. (n.d.). How to read a 10-K/10-Q. Office of Investor Education and Advocacy. find source ↗