How to Read an Income Statement: A Plain-English Guide
Oct 29, 2026
You do not need to be an accountant to read an income statement. You need to know what it measures, the order it is built in and four or five questions to ask of it. This plain-English guide shows you how to read one in about ten minutes, with a worked example you can follow line by line.
What an income statement tells you
The U.S. Securities and Exchange Commission's Beginners' Guide to Financial Statements puts it simply: an income statement "is a report that shows how much revenue a company earned over a specific time period." It also shows the costs and expenses of earning that revenue, and what is left over at the end.
Two words in that definition matter most. Revenue is money earned from selling products or services. Specific time period means the statement covers a month, a quarter or a year. It is a movie of that period, not a snapshot of a single day. (The balance sheet is the snapshot.)
The SEC guide names four main financial statements: the balance sheet, the income statement, the cash flow statement and the statement of shareholders' equity. The income statement is often the best place to start, because it answers the question most people ask first: did we make money?
Read it from top to bottom
An income statement is built like a staircase. You start with revenue at the top and subtract costs step by step. Each step has a name:
- Revenue (also called sales): the total brought in from selling products or services.
- Cost of goods sold: the direct costs of what you sold, such as materials or the cost of products bought for resale.
- Gross profit: revenue minus cost of goods sold. The SEC guide notes it is sometimes called gross margin.
- Operating expenses: the costs of running the business, such as salaries, rent, marketing and software.
- Operating income: gross profit minus operating expenses. The SEC guide notes this is often called income from operations.
- Interest and taxes: interest on borrowing and income tax.
- Net income: what remains. This is the famous "bottom line," also called net profit or net earnings, or a net loss if the number is negative.
Read the statement as a story: what came in, what it cost to deliver, what it cost to run the business and what was left.
A worked example
Here is a simplified annual income statement for a fictional small landscaping company. The numbers are illustrative.
| Line | Amount | Notes |
|---|---|---|
| Revenue | $500,000 | Landscaping contracts and one-off jobs |
| Cost of goods sold | ($200,000) | Plants, materials, crew wages on jobs |
| Gross profit | $300,000 | 60% of revenue |
| Operating expenses | ($220,000) | Office staff, rent, insurance, marketing, vehicles |
| Operating income | $80,000 | 16% of revenue |
| Interest expense | ($10,000) | Equipment loan |
| Income tax | ($14,000) | |
| Net income | $56,000 | 11.2% of revenue |
Now ask the questions. Gross margin is $300,000 divided by $500,000, or 60%. That tells you how much of each sales dollar is left after the direct cost of doing the work. Operating margin is $80,000 divided by $500,000, or 16%. Net margin is $56,000 divided by $500,000, or 11.2%.
On their own, these percentages say little. Their power comes from comparison. If last year's gross margin was 65%, something changed: perhaps materials got more expensive or jobs were priced too low. That is a question worth taking to your bookkeeper or finance team.
Five questions to ask any income statement
- What period does it cover? Make sure you are comparing like with like, such as a quarter against the same quarter last year.
- Is revenue growing, and why? More customers, higher prices or a one-off large job tell very different stories.
- Is gross margin holding steady? A falling gross margin often points to pricing or direct cost problems.
- Which operating expenses grew fastest? Look for costs growing faster than revenue.
- Does profit mean cash? Not necessarily. A business can show a profit and still run short of cash if customers pay late. That is what the cash flow statement is for.
Template: your ten-minute income statement review
| Measure | How to calculate | This period | Last period | What changed? |
|---|---|---|---|---|
| Revenue | Top line | |||
| Gross margin | Gross profit / revenue | |||
| Operating margin | Operating income / revenue | |||
| Net margin | Net income / revenue | |||
| Fastest-growing expense | Compare expense lines |
The takeaway
An income statement shows revenue, the costs of earning it and the profit left over for a specific period. Read it from top to bottom, calculate three margins and compare them with the previous period. The changes, not the totals, tell you where to look next.
Keep learning
Read the numbers with confidence
Financial Literacy for Business Professionals is a practical, self-paced course for managers on reading the three financial statements, margins and key ratios, budgets and variances, and the business case. Start with the free first lesson.
Sources
- U.S. Securities and Exchange Commission, Beginners' Guide to Financial Statements
This article is general education, not accounting, tax or investment advice. The company and figures in the example are fictional.
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