Decision tool
Rule of 40 Calculator
Sum YoY growth rate and profit margin to score against the Rule of 40 SaaS benchmark.
Your inputs
Adjust the fields and review the result in this workbench.
Cite this calculator
Results use the inputs you enter and standard formulas documented on this page. Not professional advice.
Last reviewed: August 2026
Rule of 40 Calculator. (August 2026). Useful Tools Online. https://usefultoolsonline.com/rule-of-40-calculator/
Interpretation
Rule of 40
High-growth companies can trade margin for growth; mature companies need margin to compensate for slower growth.
Avoid mistakes
Common mistakes
A few things that can lead to misleading results or poor decisions.
Using monthly growth without annualizing.
Mixing EBITDA and operating margin definitions.
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