Open any income statement and you’ll see profit reported at several levels. The three that matter most are revenue, operating income and net income. They are not alternatives — they are the same money measured at three points on the way down the statement.
The answer first
Think of the income statement as a waterfall:
- Revenue (the “top line”) — everything the company sold.
- Subtract the cost of goods/services and operating expenses (R&D, marketing, admin) to get operating income.
- Subtract interest and taxes to get net income (the “bottom line”).
For a typical profitable company, revenue > operating income > net income.
A worked example
Here is Apple’s fiscal 2025, taken from its 10-K (see the full Apple company page):
| Line | Amount (FY2025) | As % of revenue |
|---|---|---|
| Revenue | $416.2B | 100% |
| Operating income | $133.1B | 32.0% (operating margin) |
| Net income | $112.0B | 26.9% (net margin) |
Revenue is the biggest number, operating income is what’s left after running the business, and net income is the final profit after interest and tax. Divide each profit line by revenue and you get the margins — the profit-margin calculator does exactly this.
Why the gaps differ between companies
The distance between these lines reflects a company’s cost structure:
| Company (latest FY) | Operating margin | Net margin |
|---|---|---|
| NVIDIA (NVDA) | 60.4% | 55.6% |
| Microsoft (MSFT) | 45.6% | 36.1% |
| Coca-Cola (KO) | 28.7% | 27.3% |
| Walmart (WMT) | 4.2% | 3.1% |
A software or chip company keeps most of each revenue dollar; a retailer like Walmart operates on thin margins and makes its money on enormous volume. Neither is “better” — they are different business models.
A note on edge cases
Some companies don’t cleanly report an “operating income” line (many banks and insurers, for instance), and a company can have a positive operating income but a net loss if interest and tax wipe out the profit. Where a filing doesn’t tag a concept, our pages leave it blank rather than guess.
Keep reading
To see how these lines roll up into margins, read gross vs operating vs net margin. To find them in a filing, see how to read a 10-K.
Figures here are factual data compiled from SEC filings — not investment advice; figures may contain errors or lag the original filing; verify on SEC EDGAR before relying on them.