Formula
ROI = (Net Profit ÷ Cost of Investment) × 100 %
or
ROI = ((Final Value – Initial Investment – Fees/Costs) ÷ Initial Investment) × 100 %
Example:
Suppose you invest $10,000 and after one year your investment is worth $12,500, and you incurred $0 in additional fees.
Net Profit = $12,500 – $10,000 – $0 = $2,500
Cost of Investment = $10,000
ROI = ($2,500 ÷ $10,000) × 100 % = 25 %