TL;DR: Net income is revenue minus all expenses: cost of goods sold, operating expenses, interest, and taxes. For the illustrative company below, revenue of $2,000 minus cost of goods sold of $1,100, operating expenses of $450, interest of $50, and taxes of $100 gives net income of $300, a net margin of 15 percent, since $300 divided by $2,000 equals 0.15. Net income is the profit figure that flows into earnings per share and retained earnings, but it is an accounting result, not a bank balance, and it must be read alongside cash flow before it is trusted.
Key Takeaways
- Net income is the last line of the income statement, reached by subtracting every category of cost from revenue in a fixed order.
- The net margin, net income divided by revenue, states the result as a percentage that can be compared across companies and years.
- Net income drives two things investors use constantly: earnings per share, and the retained earnings added to the balance sheet.
- It includes non cash charges such as depreciation, and it can include one off gains and losses, so a single period's figure needs context before it means much.
- Net income and cash flow routinely differ. Both are real, and they answer different questions.
Building net income, line by line
All figures in this section are illustrative, in millions. Start with revenue of $2,000. Subtract cost of goods sold of $1,100 and gross profit is $900, since $2,000 minus $1,100 equals $900. Subtract operating expenses of $450 and operating income is $450, since $900 minus $450 equals $450. Subtract interest of $50 and income before tax is $400, since $450 minus $50 equals $400. Subtract taxes of $100 and net income is $300, since $400 minus $100 equals $300. The implied tax rate in this example is 25 percent, since $100 divided by $400 equals 0.25.
Each subtraction answers a different question, which is why the intermediate lines exist. Gross profit shows what the product itself earns. Operating income shows what the whole operation earns before financing. Net income shows what is left for the owners after every claim, including the lender's and the tax authority's, has been paid. Our guide to how to read an income statement covers the full statement layout, and profit margins explained computes the gross, operating, and net margins from a single example side by side.
From net income, two roads lead onward. Divide it by the share count and you get earnings per share: with an illustrative 50 million shares outstanding, $300 million divided by 50 million equals $6.00 per share, the input to the P/E ratio and most headline profit reporting, covered in earnings per share explained. What is not paid out as dividends stays in the company as retained earnings on the balance sheet, which is where the income statement hands over to how to read a balance sheet.
Why the bottom line can mislead on its own
Net income can rise for reasons that have nothing to do with a stronger business. A company can sell a building and book a one off gain, cut the maintenance and training that protect future years, or benefit from a tax credit that will not repeat. Each raises this year's net income. None of them raises the company's earning power, and the notes to the financial statements, where one off items are disclosed, are where a careful reader checks which story is true.
It can also fall while the business strengthens. A company investing heavily through the income statement, hiring ahead of growth or expensing product development, reports lower net income precisely because it is spending on the future. Depreciation from a recent, productive factory does the same. This is why investors compare net income against operating cash flow from the statement covered in how to read a cash flow statement: when profit and cash tell different stories for several periods, the difference itself is the finding, and it deserves an explanation before the stock deserves a decision.
A second caution is comparability. Net income depends on accounting choices, depreciation schedules, inventory methods, and how aggressively revenue is recognised. Two companies in the same industry can report different net incomes on near identical economics. Trends within one company, read consistently over several years, are usually more informative than a single year compared across companies.
None of this makes net income optional. It is the legally reported, audited measure of profit, the base for EPS, dividend capacity, and most valuation ratios, including the return measures in our guide to return on assets. It simply means the bottom line is the end of the income statement, not the end of the analysis.
Sources and method
- Target keyword: "what is net income" from .saeo/keywords.yaml (queue entry added 2026-10-28). No search volume or difficulty figure is claimed; both are recorded as unknown in the queue entry.
- All company figures are labelled illustrative examples. Arithmetic verified for this draft on 2026-10-28: 2,000 minus 1,100 equals 900; 900 minus 450 equals 450; 450 minus 50 equals 400; 400 minus 100 equals 300; 300 divided by 2,000 equals 0.15, or 15 percent; 100 divided by 400 equals 0.25, or 25 percent; 300 divided by 50 equals 6.00.
- Internal links checked against existing drafts in this folder on 2026-10-28: how-to-read-an-income-statement, profit-margins-explained, earnings-per-share-explained, how-to-read-a-balance-sheet, how-to-read-a-cash-flow-statement, what-is-return-on-assets (drafted in this same run).
