IRR Calculator
Free online IRR calculator for 2026 investment cash flow analysis. Enter an initial cost and annual returns to estimate internal rate of return, NPV, ROI, and payback in seconds.
Enter Values
The upfront cash outflow or project cost
Include sale proceeds or exit value if the investment ends in year 6
Your hurdle rate or required annual return
Result
Enter values above and click Calculate to see your result.
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Formula
How it works: IRR is the discount rate that makes net present value equal zero. The calculator treats the initial investment as a cash outflow, discounts each yearly cash flow, and solves for the annual rate that balances the project.
Review and Methodology
This calculator runs locally in your browser. Inputs are converted into the units required by the formula, and the result is paired with supporting references so you can verify the method before using it for planning or estimates.
Worked Example
How Internal Rate of Return Works
Internal rate of return is a time-adjusted way to evaluate an investment. Instead of only asking how much total profit you made, IRR asks what annual return rate would make the present value of all future cash flows equal the money you put in at the start.\n\nThat makes IRR useful for real estate, private equity, startup investments, equipment purchases, and business projects where money arrives over multiple years. A dollar returned in year 1 counts more than a dollar returned in year 6 because you can reinvest earlier cash sooner.\n\nIRR works best for conventional cash flows, where there is one upfront outflow followed by positive inflows. If cash flows switch signs multiple times, such as a large cleanup cost after several good years, IRR can become ambiguous. In those cases, compare the project with NPV at your required return and review the cash flow timing directly.
- IRR solves the annual rate that makes net present value equal zero.
- Use IRR when cash flows happen over several periods, not just at the start and end.
- Compare IRR to your hurdle rate. If IRR is higher, the project may clear your required return.
- Use NPV alongside IRR to see the dollar value created at your chosen discount rate.
- Non-conventional cash flows can produce multiple IRRs or no useful IRR.
Use this IRR calculator with the ROI Calculator for total return and the Rental Yield and Cap Rate Calculator when analyzing income-producing real estate.
You can also calculate changes using our ROI Calculator, Compound Interest Calculator, Rental Yield and Cap Rate Calculator or Revenue Growth Calculator.
IRR Interpretation Guide
General planning ranges for comparing IRR to risk and capital alternatives.
| IRR Range | Typical Read | Common Context |
|---|---|---|
| Below 0% | Loss-making | Future cash flows do not recover the initial cost. |
| 0% to 6% | Low return | May fit low-risk projects but can underperform inflation and opportunity cost. |
| 6% to 12% | Moderate return | Common target range for stable income projects and some real estate deals. |
| 12% to 20% | Strong return | Often attractive if risk, leverage, and cash flow assumptions are reasonable. |
| Above 20% | High return | Can be compelling, but usually deserves extra scrutiny around risk and assumptions. |
Note: These ranges are educational planning references only. Required returns vary by risk, debt, taxes, liquidity, market conditions, and investor goals.
Frequently Asked Questions
What is IRR?
IRR means internal rate of return. It is the annual discount rate that makes the net present value of all cash flows equal zero. In plain English, it estimates the annual return implied by a series of cash inflows and outflows.
How do I calculate IRR from cash flows?
Start with the initial investment as a negative cash flow, then list each yearly return. IRR is found by testing discount rates until the discounted value of the future cash flows equals the initial investment. This calculator does that iterative solving for you.
What is a good IRR?
A good IRR depends on risk and your hurdle rate. A stable real estate project might look attractive at 8-12%, while venture capital or higher-risk projects may need 20% or more. Compare IRR against the return you require for the level of risk.
What is the difference between IRR and ROI?
ROI measures total profit as a percentage of the initial investment. IRR accounts for timing, so earlier cash flows are worth more than later cash flows. A project can have a strong ROI but a weaker IRR if most cash arrives far in the future.
Can IRR be negative?
Yes. If the future cash flows do not recover the initial investment, the IRR can be negative or may not have a meaningful solution. The calculator will show when it cannot find a valid IRR from the cash flow pattern you entered.
Why can there be more than one IRR?
Multiple IRRs can happen when cash flows change sign more than once, such as a project with a big outflow, then inflows, then another large cleanup cost. In those cases, also review NPV at your discount rate and consider a modified IRR approach.
How is NPV related to IRR?
NPV uses your chosen discount rate to show the dollar value of a project today. IRR finds the discount rate where NPV equals zero. If IRR is higher than your required return, NPV at that required return is usually positive for conventional cash flows.
Can I embed this IRR Calculator on my website?
Yes. Click the "Embed" button at the top of this page to customize the size, colors, and theme, then copy the iframe code. Paste it into any HTML page, WordPress site, or CMS. It is completely free, requires no signup, and works on all devices. You can also visit our embed guide at calculory.com/services/embed-calculators for more details.
Financial Disclaimer
This calculator is provided for informational and educational purposes only. It is not intended as financial, investment, or tax advice. Results are estimates and may not reflect your actual financial situation. Always consult a qualified financial advisor or tax professional before making any financial decisions based on these results.
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