SaaS Rule of 40 Calculator
Check if growth rate plus profit margin clears the 40% health bar.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
SaaS founders, operators and investors rely on the free SaaS Rule of 40 Calculator to nail SaaS Rule of 40 in seconds — no spreadsheets, no sign-up. Enter your numbers, get an accurate result instantly, and compare scenarios to make smarter pricing, budgeting and growth calls.
About SaaS Rule of 40 Calculator
The Rule of 40 says a healthy SaaS company's revenue growth rate plus its profit margin should add up to at least 40%. The formula is simple: Rule of 40 = Revenue Growth Rate (%) + Profit Margin (%). For example, 30% growth plus a 15% margin equals 45%, which clears the bar. The free SaaS Rule of 40 Calculator does the math for you — just enter your year-over-year growth rate and your profit (or EBITDA) margin and read the result instantly. It runs entirely in your browser with no sign-up, no limits and nothing to install.
How to use SaaS Rule of 40 Calculator
- 1Enter your year-over-year growth rate and your profit (or EBITDA) margin into the calculator.
- 2The SaaS Rule of 40 is computed automatically using the formula Rule of 40 = Revenue Growth Rate (%) + Profit Margin (%) — there's no button to press.
- 3Change any input to model a different scenario, then note or copy the result.
Why use SaaS Rule of 40 Calculator?
- ✓Calculates SaaS Rule of 40 instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the numbers you enter stay private
- ✓Updates live as you type — perfect for comparing scenarios
Frequently asked questions
How do you calculate SaaS Rule of 40?+
The Rule of 40 says a healthy SaaS company's revenue growth rate plus its profit margin should add up to at least 40%. The formula is: Rule of 40 = Revenue Growth Rate (%) + Profit Margin (%). For example, 30% growth plus a 15% margin equals 45%, which clears the bar.
Which profit margin should I use?+
Investors commonly use EBITDA margin or free-cash-flow margin, but operating margin works too — just stay consistent across periods.
Is the SaaS Rule of 40 Calculator free to use?+
Yes — it's completely free, with no sign-up, no login and no usage limits. You can run it as many times as you like.
Is my data private?+
Yes. The SaaS Rule of 40 Calculator runs entirely in your browser, so the figures you enter are never uploaded or stored on any server.
Embed SaaS Rule of 40 Calculator on your website
Want SaaS Rule of 40 Calculatoron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
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