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IRR Calculator

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IRR (annual) 0%
Net cash flow (undiscounted) $0.00

Free IRR (internal rate of return) calculator where you paste a whole list of cash flows at once — we checked calculator.net's IRR calculator directly and it uses individual fields up to 'Year 50', one box per year, with no way to paste a full list in one go.

This tool is for informational purposes only and is not a substitute for professional financial or medical advice. Consult a qualified professional before making decisions. See our Disclaimer.

How it works

  1. Paste or type your cash flows, one per line — year 0 first (usually negative, your initial investment)
  2. The IRR is calculated instantly using a numerically stable bisection method
  3. Works with any number of periods, and any pattern of positive/negative cash flows

Frequently asked questions

Do I have to enter each year in a separate box?

No — paste your whole list of cash flows into one text box, one value per line. We checked calculator.net's IRR calculator directly and it requires typing into individual fields up to 'Year 50', with no bulk entry option.

What if there's no valid IRR?

If your cash flows are all the same sign (all negative or all positive) there's no rate that makes the investment break even, so the tool tells you directly instead of returning a meaningless number.

#IrrCalculator#InternalRateOfReturnCalculator#PasteCashFlowsIrr#IrrCalculatorMultipleCashFlows#IrrFormulaCalculator

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From the blog

An IRR calculator with 50 separate input boxes. One for every year.
finance-calc

An IRR calculator with 50 separate input boxes. One for every year.

We checked calculator.net's IRR calculator directly — 'Year 1', 'Year 2', all the way to 'Year 50', each its own field. No way to paste a list.

2026-09-01

Update history

  • 2026-09-01 Added: a cover image (a column of coin stacks alternating above and below a baseline, some dipping negative, beside a balancing scale) — used as the card thumbnail, social share image, and blog title image.
  • 2026-09-01 Launched: IRR calculator (no button) — paste any number of cash flows as a list, solved via bisection for a stable result. Entirely client-side.