IRR Calculator
Find the break-even discount rate of a project.
Runs locally in your browser — your numbers never leave this pageTry: Cash flows=-10000,2500,3000,4000,4500 → 5 periods, 13.41%
How to use
Internal rate of return is the rate that makes NPV zero. It is the effective yield of the cash-flow stream and is handy for comparing deals.
Method
We solve for r where Σ CFt / (1 + r)t = 0 by bisection.
FAQ
When does IRR fail?
With alternating positive and negative flows it can give multiple answers. NPV is safer then.
IRR vs ROI?
IRR includes timing of cash flows; ROI does not.
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