It depends on the investment type and your cost of capital. Most businesses use a hurdle rate of 8–15%. Real estate investors often target 15–20%. Venture capital looks for 25%+. Any IRR above your hurdle rate adds value.

How does IRR differ from ROI?

ROI measures total return as a percentage of investment without accounting for the time value of money. IRR accounts for timing — a dollar received sooner is worth more than one received later.

What if I get no IRR result?

IRR may not exist or may not be unique if cash flows change sign more than once (e.g., positive then negative then positive). In such cases, use NPV as your primary metric.

NPV at 10% discounts each future cash flow at 10% per year and sums them, then subtracts the initial investment. A positive NPV means the investment creates value at a 10% hurdle rate.

What does payback period tell me?

The simple payback period is how many years it takes to recover your initial investment from cumulative cash flows, ignoring the time value of money. It measures liquidity and risk, not profitability.

Finance

↵ to calculate

IRR Calculator - Internal Rate of Return Formula Online

Calculate the Internal Rate of Return (IRR), NPV at 10%, and payback period for any investment.

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How to use this calculator

👉 Fill in the boxes below and your answer appears instantly — no maths needed, we do it all for you! 🎉

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In plain English — what does this do?

💵 A money helper! It works out things like how much to save, how much you owe, or how much you’ll have in the future. Just fill in the boxes and you’ll get your answer.

📌 Direct Answer & Summary

The Internal Rate of Return (IRR) is the discount rate that makes the net present value (NPV) of all cash flows equal to zero. It represents the annualized rate of return an investment is expected to generate, making it one of the most widely used metrics in capital budgeting and investment analysis.

Initial Investment ($)

Year 1 Cash Flow ($)

Year 2 Cash Flow ($)

Year 3 Cash Flow ($)

Year 4 Cash Flow ($)

Year 5 Cash Flow ($)

Year 6 Cash Flow ($)

What is IRR Calculator - Internal Rate of Return Formula Online?

How to use it

1️⃣ Enter the initial investment (the amount you invest upfront, as a positive number).
2️⃣ Enter the expected cash inflows for years 1 through 6.
3️⃣ The IRR, NPV at a 10% discount rate, and payback period are calculated automatically.
4️⃣ An IRR above your required rate of return (hurdle rate) means the investment is worth pursuing.
5️⃣ Compare IRR across multiple projects to prioritize the best opportunities.

Formula

IRR solves for r where NPV = 0: NPV = −CF₀ + CF₁/(1+r) + CF₂/(1+r)² + … + CFₙ/(1+r)ⁿ. Solved iteratively using Newton's method.

💡 See it in action — a real example

Invest $50,000. Cash flows: Y1=$10,000, Y2=$15,000, Y3=$18,000, Y4=$20,000, Y5=$12,000. IRR ≈ 24.1%. NPV at 10% ≈ $11,340. Payback period ≈ 3.35 years.

❓ Common questions

What is a good IRR?: It depends on the investment type and your cost of capital. Most businesses use a hurdle rate of 8–15%. Real estate investors often target 15–20%. Venture capital looks for 25%+. Any IRR above your hurdle rate adds value.
How does IRR differ from ROI?: ROI measures total return as a percentage of investment without accounting for the time value of money. IRR accounts for timing — a dollar received sooner is worth more than one received later.
What if I get no IRR result?: IRR may not exist or may not be unique if cash flows change sign more than once (e.g., positive then negative then positive). In such cases, use NPV as your primary metric.
What is NPV at 10%?: NPV at 10% discounts each future cash flow at 10% per year and sums them, then subtracts the initial investment. A positive NPV means the investment creates value at a 10% hurdle rate.
What does payback period tell me?: The simple payback period is how many years it takes to recover your initial investment from cumulative cash flows, ignoring the time value of money. It measures liquidity and risk, not profitability.

⚡ Related Finance Tools & Calculators

Present Value Calculator Future Value Calculator Payback Period Calculator