Business
ROI Calculator
Calculate return on investment as a percentage, with the annualised figure for multi-year investments.
Result
Simple ROI ignores timing. A 60% return over two years is not as good as 60% in one, which is why the annualised figure is the fairer comparison between options.
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About this calculator
Why does annualised return matter?
Because money has a time cost. Comparing raw ROI across investments of different lengths flatters the slow ones. Annualising puts them on the same footing.
What should I include in the cost?
Everything you had to spend to get the return, including your own time at a realistic rate. Excluding labour is why so many side projects look more profitable than they are.
The formula
ROI = (return − cost) ÷ cost × 100
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