Profit margin calculator
Enter your revenue and costs. See your gross, operating and net margins, and your markup.
- Gross, operating, net
- Markup too
- Free, no sign-up
Side business and tax
If you have business income alongside your salary, presumptive tax can keep it simple.
Questions people often ask
What is presumptive tax?
Under 44AD (business) or 44ADA (profession), you can declare a set share of turnover as profit, without keeping full books, within the limits.
Does business income change my ITR form?
Yes. You'll usually file ITR-3, or ITR-4 for presumptive income.
Three margins
Each takes off more costs.
- Gross: after the cost of goods.
- Operating: after running costs.
- Net: after interest and tax.
Last reviewed 9 October 2026. The rules in this calculator come from these official sources.
- Individuals with business or professional income Income Tax Department
Common questions
What is gross margin?
(Revenue − cost of goods sold) ÷ revenue: what's left from each sale after direct costs.
What is net margin?
Net profit ÷ revenue, after all costs, interest and tax.
What's the difference between margin and markup?
Margin is profit as a share of the price; markup is profit as a share of cost. A 25% margin is a 33% markup.
What is operating margin?
Profit after running costs like rent and salaries, before interest and tax, as a share of revenue.
Should I include GST?
No. Use amounts before GST; GST you collect isn't your revenue.