Enter periodic cash flows to solve the discount rate that brings their net present value near zero.
Calculate with the IRR Calculator
Enter the details below. Required values are validated before results are shown.
IRR Calculator results
How to use the IRR Calculator
- Choose the display currency and any calculation mode or frequency.
- Enter each required value using a consistent currency and time basis.
- Select Calculate or press Enter.
- Review the result explanation, assumptions, and any schedule before relying on the estimate.
Worked example
Cash flows −10,000, 3,000, 4,200, and 6,800 have a positive periodic IRR.
Understanding the results
The summary separates the most important output from supporting values. Currency selection changes formatting only; it does not convert exchange rates or alter a currency-independent formula.
Frequently asked questions
Why can an investment have more than one IRR?
A bracket scan followed by bisection uses a 1e-8 tolerance and at most 200 iterations; multiple sign-change brackets are reported. The result depends on the values and assumptions entered, so compare it with the applicable provider or official rule.
Can I use decimal values in the IRR Calculator?
Yes. Decimal values are supported. Results are calculated at full JavaScript numeric precision and formatted for readability.
Are the IRR Calculator results guaranteed?
No. The calculator provides an estimate based on the entered assumptions and is not financial, tax, investment, lending, payroll, or legal advice.