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Profit margin calculator

See your gross, operating and net margin, the numbers banks and buyers look at first.

The math

How this calculator works

Gross margin = (revenue − cost of goods sold) ÷ revenue. Operating margin also subtracts overhead. Net margin subtracts everything, including taxes. Clean books make these numbers accurate.

Source: SBA: Manage your business finances

Source: SBA: Manage your business finances

Figures and rules on this page come from the official and published sources linked above, as of November 2026. People and numbers in the examples are made up to explain the idea. This page is general information, not tax or legal advice for your situation, and laws change; check the linked source or ask a licensed CPA before you act.

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