ROI Calculator Formula & How It Works
- Net Return = Final Value − Initial Investment
- Cost = Initial investment amount
- t = Holding period in years (for annualising)
- Annualised ROI accounts for the compounding effect of time
ROI measures profitability as a percentage of the cost. To compare investments held for different periods, use annualised ROI (CAGR): Annual ROI = (1 + ROI)^(1/t) − 1. A 100% ROI over 5 years is only a 14.9% annual return, not 20%.