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Income Tax Calculator
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ROI Calculator
Calculate return on investment (ROI) and annualized return from what you put in and what you got back.
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How to use this calculator
Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
ROI formulas
ROI = (final value − cost) ÷ cost
annualized = (final ÷ cost)^(1 ÷ years) − 1
ROI alone ignores time: 45% over 3 years is about 13.2% a year. Include all costs (fees, taxes) and income (dividends, rent) for a fair figure.
Frequently asked questions
Is a 10% ROI good?
It depends on the risk and time frame; compare with what a similar-risk alternative would have earned.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Expert review pending
- Last updated
- 31 Oct 2026
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