IRR calculator IRR calculator

Periodic cash flows, IRR and NPV

Use equal income per period or enter a complete cash-flow series. Compare IRR with net present value at your chosen discount rate.

IRR is a rate per selected period, not automatically an annual rate. These calculations exclude fees and taxes and are not an investment recommendation.

Internal rate of return calculator

IRR is the rate that makes the discounted cash flows equal the initial investment.

IRR may not exist or may be ambiguous for unusual cash-flow patterns.

Quick start

Calculate periodic IRR and NPV from equal or custom cash flows.

  1. Choose a cash-flow mode and period
  2. Enter payments and a discount rate per period
  3. Calculate and export the cash-flow report
✓ Use the calculator to turn input values into a clear, repeatable result.
✓ Keep units and assumptions visible so the calculation can be checked later.
✓ Copy the result or key numbers for reports, messages or spreadsheets.
✓ Reset to defaults when you want to compare another scenario from a clean state.
✓ Calculators run in the browser and are useful for quick estimates before formal checks.
✓ For finance, health, engineering or legal decisions, verify important results with a specialist or official source.

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