Net Profit Margin Calculator
Net profit margin is the definitive measure of a business's overall profitability. Unlike gross margin, which only accounts for production costs, net margin reflects every dollar spent: operating costs, salaries, rent, depreciation, interest payments, and income taxes. It answers the question: after paying everyone we owe, how much of each revenue dollar do we actually keep? A rising net margin over time is a strong signal of improving financial health; a declining margin warrants investigation into cost control or pricing strategy.
Net profit margin formula
Net Profit Margin = Net Income / Revenue * 100
Example: Net income of $75,000 on revenue of $500,000. Net Profit Margin = $75,000 / $500,000 * 100 = 15.00%.
Interpreting net profit margin
- A margin above your industry average suggests superior cost control or pricing power.
- Compare margins quarter-over-quarter to detect trends before they become problems.
- Tax changes can affect net margin without any operational change, so also monitor pre-tax margin separately.
- A one-time write-down or asset sale can distort margin. Look at adjusted or underlying margin for a cleaner picture.
- Lenders and investors use net margin alongside revenue growth to assess long-term viability.
Frequently asked questions
What is net profit margin?
Net profit margin is net income divided by total revenue, expressed as a percentage. It represents how many cents of profit a business keeps for every dollar of revenue after all expenses, interest, and taxes are paid.
What is included in net income?
Net income (also called the bottom line) is revenue minus all costs: COGS, operating expenses, depreciation, interest expense, and income taxes. It is the final profit figure on the income statement.
What is a good net profit margin?
Net profit margins vary widely by industry. Professional services firms may achieve 20% or more; retailers often operate at 2-5%. A useful benchmark is your own historical trend and your industry average rather than a universal threshold.
How does net margin differ from gross margin?
Gross margin deducts only COGS from revenue. Net margin deducts every cost, including operating expenses, interest, and taxes. Net margin is a measure of total business profitability, not just production efficiency.
Can net profit margin be negative?
Yes. A negative net profit margin means the business spent more than it earned in a period. While start-ups often have negative margins intentionally, a persistently negative margin in an established business signals financial stress.
Official sources
- FASB Accounting Standards Codification: ASC Topic 220 (Comprehensive Income).
- IRS: Small Business and Self-Employed Tax Center.
Reviewed by the CalculatorHub team, edited by James Graham, 15 June 2026. See our methodology.