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IRR Calculator

Find the internal rate of return that makes NPV zero, from uniform or variable annual cash flows.

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Open IRR Calculator and you get an answer straight away, with no account to create. Its place is under Investing & markets; Capital Gains Yield Calculator and Currency converter answer the questions closest to this one.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What is IRR Calculator?

Find the internal rate of return that makes NPV zero, from uniform or variable annual cash flows.

When would I actually use this?

Comparing two investments that pay at different times, deciding whether a project clears its cost of capital, and sanity-checking a valuation someone else produced.

What is the most common mistake?

Trusting a valuation without asking what share of it comes from the terminal value. Past 70%, the answer is an assumption about the distant future dressed up as a calculation.

How is IRR Calculator different from Capital Gains Yield Calculator?

They sit next to each other but answer different questions. Capital Gains Yield Calculator: compute the capital gains yield from the purchase and current price, with dividend yield, total return and the annualised equivalent. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Currency converter is the closest one after this: Convert the euro and 29 other currencies at European Central Bank reference rates, dated and updated each working day, with cross rates and a 90-day chart.

What else is worth having open alongside it?

Dividend Payout Ratio Calculator and Dividend Reinvestment (DRIP) Calculator — they come up in the same task often enough to be worth a second tab.

Where do the figures come from?

Discounting, IRR and payback are defined identically everywhere, so the arithmetic is not in dispute — the assumptions you feed it are. Change the discount rate by a point and re-read the answer.

Further reading

All guides →
ComparisonNPV vs IRR: What to Do When the Two Rules Rank the Same Projects DifferentlyIRR picks the $10,000 project returning 50 percent; NPV picks the $100,000 project returning 30 percent, worth $20,370 against $3,889. And a mine with a cleanup cost has two IRRs, 10 and 20 percent, so the rate answers nothing.ExplainerWhy the Payback Period Lies When the Cash Flows Are UnevenIt throws away everything after the cut-off, ignores the time value of money, and ranks a project that returns early and then dies above one that returns steadily. Computed: payback prefers the worse project by 1.33 years while net present value prefers the better one by $19,571. And the popular shortcut — one divided by the payback — overstates the true return by 17 points on a five-year asset.ExplainerPrice Return, Total Return and Yield Are Three Different NumbersThe index quoted in the news is almost always a price index. At 5 percent price growth and a 2.5 percent reinvested yield, 30 years turn $10,000 into $43,219 on price and $90,656 on total return — the price measure misses 58.8 percent of the gain.ExplainerDividend Reinvestment: What Actually Drives the DifferenceReinvesting a 3 percent yield for 30 years turns 100 shares into 242.7 and multiplies the final position by exactly that factor: $32,434 becomes $78,726. Tax at 30 percent on each dividend costs $18,223 of it — nearly two and a half times the tax actually paid.ExplainerTax-Equivalent Yield: Comparing a Tax-Free Bond With a Taxable OneTaxable-equivalent yield = tax-free yield ÷ (1 − marginal rate). A 3.00 percent tax-free yield is worth 3.85 percent at a 22 percent marginal rate and 5.07 percent at 40.8 percent. The trap is that it is the marginal rate, surtaxes and social levies included — leaving them out costs 0.85 points of yield.ExplainerPaying Off a Loan Early: What Actually ChangesAn overpayment earns exactly the loan's rate, risk-free and after tax. On $200,000 at 5.00 percent over 25 years, $20,000 paid at the start saves $42,092 of interest; the same sum at year 16 saves $11,088; applied to the payment instead of the term it saves only $15,075.