IRR Calculator
Enter period cash flows in order, starting with the investment as negative. IRR is the discount rate making NPV zero.
Results appear here as soon as you enter data.
How the IRR Calculator works
The calculation follows the standard method used across the US — no shortcuts, no hidden assumptions. Here is exactly what happens behind the scenes:
Frequently Asked Questions
How does the IRR Calculator work?
Enter your numbers above and results update instantly using standard formulas, computed entirely on your device.
Is the IRR Calculator free to use?
Yes — completely free with no signup required, and it works on phones, tablets, and desktops.