NPV & IRR Calculator

How to use the NPV & IRR Calculator

1. 01
   Enter the initial investment. The upfront cost (year 0 outlay).
2. 02
   Set a discount rate. Your required return or cost of capital.
3. 03
   Enter each year's cash flow. Add or remove years; the verdict updates live.

How is it calculated?

Net Present Value discounts every future cash flow back to today: NPV = Σ CFₜ ÷ (1 + r)ᵗ, minus the initial outlay. A positive NPV means the project beats your required return. The IRR is the discount rate that makes NPV exactly zero — found here by iteration — and payback is the year cumulative cash flow turns positive.