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IRR Calculator
Internal rate of return from a series of cash flows.
Enter cash flows by period. Period 0 is usually the initial investment (negative).
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IRR
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NPV @ rate
About
IRR is the discount rate at which the net present value of all cash flows equals zero — it's solved numerically (bisection). NPV discounts future flows at the rate you enter. A project is generally attractive when IRR exceeds your required return.