Income Statement

Stock trading dictionary: meaning, example and how traders use it.

Last updated: October 17, 2026

Definition: An income statement is a financial statement that reports a company's revenue, expenses, and resulting profit or loss over a specific period, such as a quarter or fiscal year; it is also called a profit and loss (P&L) statement.

How an income statement works

The income statement is one of three core financial statements, alongside the balance sheet and the cash flow statement. Public companies publish it each quarter and in their annual report. It flows from the "top line" (revenue) to the "bottom line" (net income), subtracting costs step by step.

  1. Revenue (sales)
  2. minus cost of goods sold = gross profit
  3. minus operating expenses such as selling, general and administrative costs and research and development = operating income
  4. plus or minus interest and other items = pre-tax income
  5. minus income taxes = net income

Net income divided by the weighted share count gives earnings per share (EPS), the figure behind most earnings headlines and the P/E ratio.

Example income statement

Suppose a hypothetical company reports for one year:

  • Revenue: $500 million
  • Cost of goods sold: $300 million, so gross profit is $200 million (40% gross margin)
  • Operating expenses: $120 million, so operating income is $80 million (16% operating margin)
  • Interest expense: $10 million, so pre-tax income is $70 million
  • Taxes: $15 million, so net income is $55 million (11% net margin)

With 50 million shares outstanding, EPS is $1.10. An analyst would compare these margins with prior years and with competitors to judge whether profitability is improving.

How investors use the income statement

In fundamental analysis, the income statement answers whether a business is growing and how efficiently it converts sales into profit. Rising revenue with shrinking margins can mean price competition; flat revenue with rising margins may reflect cost cuts that cannot continue forever. Interest expense relative to operating income shows how heavily debt weighs on results.

Investors also check for one-time items such as restructuring charges or asset sales, which can distort a single period. Many companies report adjusted figures that exclude such items; these can be useful but should be reconciled with the official numbers.

Limitations of the income statement

The income statement uses accrual accounting, so revenue and expenses are recorded when earned or incurred, not when cash moves. A company can report a profit while burning cash, which is why it should be read with the cash flow statement. It also says nothing directly about debts and other liabilities, which appear on the balance sheet. Estimates such as depreciation schedules, inventory valuation, and revenue recognition policies involve management judgment, so two companies with similar operations can report different profits. Reading the notes to the financial statements helps explain these choices.

Frequently asked questions

What is the difference between an income statement and a balance sheet?

The income statement covers performance over a period, while the balance sheet is a snapshot of assets, liabilities, and equity at a single date.

What is the bottom line on an income statement?

It is net income, the profit left after all expenses, interest, and taxes have been subtracted from revenue.

How often do public companies release income statements?

US public companies file them quarterly and annually with the SEC, in quarterly and annual reports.

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For information only, not investment advice. See the disclaimer.