IRR Calculator
IRR is the discount rate that makes NPV = 0: Σ CFt ÷ (1+IRR)^t = 0Solving numerically: NPV at 20%≈−$147, at 19%≈$115; IRR≈19.5%
Free online tool
IRR Calculator
Enter your initial investment and projected cash flows over 5 years.
Instant calculation
IRR Calculator
Enter your initial investment and projected cash flows over 5 years.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter initial investment
Type the upfront cost (as a negative outlay).
- 02
Enter cash flows
Type the expected cash flows for years 1 through 5.
- 03
Set discount rate
Enter a comparison discount rate for NPV calculation.
The formula
How this calculation works
IRR is estimated iteratively. It represents the annualized effective compounded return rate.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
Invest $10,000, cash flows $3K, $4K, $5K, $5K, $6K — IRR?
Solving numerically: NPV at 20%≈−$147, at 19%≈$115; IRR≈19.5%≈ 19.5% IRRCommon questions
Questions about this calculation
What is the IRR Calculator?
The IRR Calculator helps you estimate the internal rate of return for a series of cash flows. Enter your values and select Calculate to get an instant result.
How is the result calculated?
IRR is estimated iteratively. It represents the annualized effective compounded return rate.
Can you show an example?
Example: Invest $10,000, cash flows $3K, $4K, $5K, $5K, $6K — IRR? — ≈ 19.5% IRR.
Is my data saved when I use the IRR Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the IRR Calculator free to use?
Yes. The IRR Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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