IRR Calculator

Internal Rate of Return from an initial investment and series of cash flows (Newton-Raphson).

Calculator Finance Updated Apr 20, 2026
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How to Use
  1. Enter initial cost (negative) and each year's cash flow.
  2. Solver finds the rate where NPV = 0.
Cash flows
IRR

Notes

NPV = 0
IRR is the discount rate that makes Σ CF/(1+r)^t = 0
Hurdle rate
accept if IRR > your required return (cost of capital)

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