IRR Calculator
Estimate the internal rate of return for flat annual cash flows.
Quick answer: enter your details below and click Estimate IRR — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Enter the initial investment.
- Enter annual cash flow and years.
- Click Estimate IRR.
About this tool
Enter the initial investment, annual cash flow, and project length, and the tool searches for the discount rate that makes net present value zero. This is an estimate for flat cash flows only, and it is not investment advice; check the figures against real, uneven cash flows before deciding.
Frequently asked questions
What if no IRR is found?
That happens when cash flows never repay the investment, or always repay it, within the search range. Recheck the figures.
Is IRR enough to choose a project?
No. Compare it with your required rate and with NPV, and consider risk and timing too.