Tools
Free Profit Margin Calculator
Calculate profit and margin percentage from revenue and costs.
Total sales or project income.
Profit NaN €, margin NaN%
- Profit
- NaN €
- Profit margin
- NaN%
What is profit margin?
Profit margin shows how much of your revenue remains as profit after costs. It is expressed as a percentage of revenue, so you can compare profitability across products, projects, or time periods.
How this calculator works
- Enter revenue: Add total sales or project income before you subtract costs.
- Enter costs: Include direct costs tied to delivering the work or product, such as materials, subcontractors, or production costs.
- Calculate profit: Profit is revenue minus costs.
- Calculate margin percentage: Margin percentage is profit divided by revenue, multiplied by 100.
Profit margin formula
margin % = (revenue − costs) / revenue × 100
Profit is the numerator. Dividing by revenue converts the result into a percentage of sales.
Worked example
Your business earns £50,000 in revenue and spends £35,000 on costs. Profit is £15,000. Margin percentage is (£15,000 ÷ £50,000) × 100 = 30%.
When to use this calculator
Use it to check pricing on a job, compare product lines, or see whether a project met your profitability target after costs are included.
Markup and margin use different bases. Compare both with the Markup vs Margin Calculator.
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Don't just take our word for it
I never wanted bookkeeping to become a second job on top of client work. With TapBooks, everything stays organized throughout the year, so I can focus on running my business instead.
Mark Scottsdale
Founder, Scottsdale Creative
Frequently asked questions
See profitability trends over time
You know your margin on paper. TapBooks helps you track expenses month by month so profitability stays visible all year.
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