Income Statement Explained

A story over a period of time

Unlike the balance sheet's single-moment snapshot, the income statement (sometimes called the profit & loss statement, or P&L) covers a period — typically a quarter (three months) or a full fiscal year — showing how much revenue a company generated and how much of it remained after various categories of expenses.

The basic flow moves from revenue at the top, through several layers of costs, down to a 'bottom line' figure — net income — which is why people sometimes refer to profit as 'the bottom line.'

Revenue and gross profit

Revenue (also called sales or 'top line') is the total amount earned from selling goods or services, before any costs are subtracted. Cost of goods sold (COGS) represents the direct costs of producing those goods or services — materials, direct labor, manufacturing overhead.

Gross profit = Revenue − COGS. Dividing gross profit by revenue gives the gross margin, which indicates how much of each sales dollar remains after covering the direct costs of production.

Operating expenses and operating income

Below gross profit, the income statement subtracts operating expenses — costs not directly tied to producing the product, such as selling, general & administrative expenses (SG&A), research and development (R&D), and depreciation/amortization.

Operating Income (also called operating profit or EBIT — earnings before interest and taxes) = Gross Profit − Operating Expenses. This figure reflects the profitability of the company's core business operations, before the effects of how it's financed (debt) or taxed.

Net income: the bottom line

From operating income, the statement further subtracts (or adds) interest expense (the cost of debt), interest income, and taxes, arriving at net income — the amount available to shareholders, either to be retained in the business or paid out as dividends.

Earnings per share (EPS) is net income divided by the number of shares outstanding, representing the portion of profit attributable to each individual share — a figure widely referenced in news coverage and used in metrics like the P/E ratio.

Watching out for one-time items

Companies sometimes report 'non-recurring' or 'one-time' items — such as restructuring charges, asset write-downs, or gains/losses from selling a business unit — that can significantly affect net income in a single period without reflecting the ongoing earning power of the business.

Many analysts focus on 'adjusted' or 'core' earnings that exclude these one-time items to get a clearer view of underlying trends — though it's worth being aware that companies have some discretion in what they label as 'one-time,' so it's useful to look at the trend of these adjustments over multiple periods as well.

Margins as a comparison tool

Because margins are percentages, they allow comparison between companies of very different sizes. A small company with a 25% net margin and a much larger company with a 10% net margin can be compared on profitability per dollar of sales, even though their absolute profit figures differ enormously. Comparing a company's margins over time, and against industry peers, often reveals more than the absolute dollar figures alone.

Frequently Asked Questions