An income statement is the financial statement that reports a business’s revenues, expenses, gains and losses over a stated period, and so the results of its operations for that period. Those results come down to one figure, the period’s net income or loss. The period is what defines it. A balance sheet answers a different question, what the business holds and owes at one date, and an income statement answers what happened between two of those dates. The same statement carries several other names, including statement of operations, statement of income, statement of earnings, and profit and loss statement or P&L.
What Is on an Income Statement
The pieces are defined elements rather than conventions, and the FASB’s conceptual framework defines four of them for a period. Revenues are inflows or other enhancements of assets of an entity or settlements of its liabilities, or a combination of both, from delivering or producing goods, rendering services, or carrying out other activities. Expenses are the mirror image, outflows or other using up of assets of an entity or incurrences of its liabilities from those same activities (FASB Statement of Financial Accounting Concepts No. 8, Chapter 4, paragraphs E80 and E81).
Gains and losses are separated from those two by exclusion rather than by size. Gains are increases in equity, meaning net assets, from transactions and other events and circumstances affecting an entity except those that result from revenues or investments by owners, and losses are the matching decreases except those that result from expenses or distributions to owners (FASB Statement of Financial Accounting Concepts No. 8, Chapter 4, paragraphs E82 and E83).
That grouping is what keeps these four off the balance sheet, though it does not on its own put them on this statement. There are two different types of elements of financial statements. The first covers assets, liabilities and equity, which describe resources or claims to or interests in resources at a specified date. The second describes the effects of transactions and other events and circumstances that affect an entity during specified time intervals, and in a business entity that type includes comprehensive income and its components, revenues, expenses, gains and losses, along with investments by owners and distributions to owners (FASB Statement of Financial Accounting Concepts No. 8, Chapter 4, paragraph E4). Those last two are period elements as well, and they are reported in equity rather than on the income statement.
All of these definitions come from the US framework. Where it and the international one part company inside a firm’s workpapers is in GAAP versus IFRS.
Single-Step and Multi-Step Presentation
Both formats reach the same net income, and they differ in whether the statement separates operating activity from everything else on the way down. A single-step presentation groups revenues and gains together, groups expenses and losses together, and gets to the result in one subtraction. A multi-step presentation stops on the way down, at gross profit and then at operating income, before non-operating items and tax finish the job. The order of those subtractions and what each subtotal means is set out in net income.
For a company filing with the SEC there is less to choose, because the line items are prescribed. Regulation S-X indicates the various line items which, if applicable, and except as otherwise permitted by the Commission, should appear on the face of the statements of comprehensive income it files (17 CFR 210.5-03).
The prescribed captions carry neither of the multi-step subtotals. They run from net sales and gross revenues through the cost, expense and non-operating captions straight to income or loss before income tax expense at caption 10, with no gross profit caption and no operating income caption of their own (17 CFR 210.5-03). None of these captions bind a company that files nothing with the Commission.
Income Statement Versus Balance Sheet
The difference is the stretch of time each one covers. An income statement shows the income and expenses of the business for a given period of time, and a balance sheet shows the assets, liabilities and your equity in the business on a given date (IRS Publication 583, Starting a Business and Keeping Records, Rev. December 2024).
The SEC’s own filing rules are written in exactly that grammar. Balance sheets are required as of the end of each of the two most recent fiscal years (17 CFR 210.3-01), while statements of comprehensive income and cash flows are required for each of the three fiscal years preceding the date of the most recent audited balance sheet (17 CFR 210.3-02). One rule says “as of” a date and the other says “for” a span, which is the whole distinction in two prepositions.
Statement of Operations, P&L, and the Other Names
These are alternative names for one statement, not different statements. A legal reference dictionary lists statement of income, statement of earnings, statement of operations and statement of comprehensive income alongside income statement, and describes it as reporting the accountant’s primary measure of performance of a business, revenues less expenses during the accounting period (Cornell Legal Information Institute, Wex). The IRS uses the profit and loss form of the name directly, describing the financial statements a business prepares from its records as income (profit and loss) statements and balance sheets (IRS Publication 583, Rev. December 2024).
One of those names carries a caveat. A statement of comprehensive income reaches past net income to a wider total. Where the boundary between those two figures falls is set out in net income.
Where the Income Statement Lands in a Firm’s Work
The statement is an output of the close, not a document anyone writes directly. Balances are proved out on a trial balance and then summarized into the statements, a chain set out in the accounting cycle, and the period rhythm that issues them is in the month-end close checklist.
The same period activity then gets re-reported under the tax regime, and for a sole proprietor the return carries its own version of the statement: Schedule C is titled Profit or Loss From Business (IRS, Schedule C (Form 1040)). Book net income is where the reconciliation between the two regimes starts, and that bridge is worked through in net income.
Because the statement reports what was earned and incurred rather than what was banked, a period can close with a profit on its face and less cash in the bank than it started with. The basis that opens that gap is accrual accounting.
Common Questions
The three usually named are revenues, expenses and net income, on the equation revenue less expenses equals net income (Cornell Legal Information Institute, Wex). Read that way, the last of the three is the result rather than an input to it.
Counted as elements of a period, there are four: revenues, expenses, gains and losses, which the framework groups as the components of comprehensive income (FASB Statement of Financial Accounting Concepts No. 8, Chapter 4, paragraphs E4 and E80 to E83). The shorter count is a simplification that holds when the period carries nothing outside revenues and expenses.
Accountably places trained offshore accountants and tax preparers inside US CPA and EA firms, and a firm can run a real block of its own close and statement preparation through a trial task before anything client facing depends on it.
