How to Calculate IRR (2026)
By Rui Barreira · Last updated: 18 June 2026
The internal rate of return (IRR) is the discount rate that makes the net present value (NPV) of a series of cash flows equal to zero. In plain terms, it is the annualized return an investment is expected to generate, accounting for the timing and size of every cash flow — not just the final payout. Venture capitalists, private equity firms, and corporate finance teams use IRR as a primary benchmark for comparing investments that have different sizes, durations, and cash flow profiles. Use the IRR Calculator to compute IRR from any set of cash flows in seconds.
How IRR is Calculated
There is no closed-form formula for IRR. It is found by numerical iteration: start with a guess, compute NPV, adjust the rate, and repeat until NPV ≈ 0. The NPV formula is NPV = Σ (Cₜ ÷ (1 + r)ᵗ), where Cₜ is the cash flow at period t and r is the discount rate. IRR is the value of r that drives that sum to zero. The calculator handles this iteration instantly regardless of how many periods you enter.
The initial investment is entered as a negative number (cash out). Subsequent inflows are positive. The periods are typically annual but can be monthly — the resulting IRR will be in the same unit.
IRR by Investment Type
The table below shows typical IRR thresholds used by practitioners in different asset classes. These are directional benchmarks, not guarantees — actual hurdle rates depend on market conditions, leverage, and risk appetite.
| Asset Class | Typical Target IRR | Notes |
|---|---|---|
| Public equities (long-run) | 8–10% | Historical US stock market average, pre-inflation |
| Real estate (core) | 8–12% | Stabilized assets, low leverage |
| Real estate (value-add) | 12–18% | Renovation or lease-up risk |
| Private equity (buyout) | 20–25% | Hurdle rate before carried interest |
| Venture capital | 25–35%+ | Compensates for high failure rate |
| Corporate project (typical) | WACC + 3–5% | Must exceed cost of capital to create value |
IRR vs. NPV — Which Should You Use?
IRR and NPV answer different questions. NPV tells you how much value an investment creates in today's dollars — it is an absolute figure. IRR tells you the percentage return, which makes it easy to compare investments of different sizes. The limitation of IRR is that it assumes interim cash flows are reinvested at the same rate, which is often unrealistic for high-IRR deals. For mutually exclusive projects, NPV is the theoretically correct decision rule. For ranking independent investments or communicating returns to LPs, IRR is the industry standard. When IRR and NPV give conflicting signals, trust NPV.
Use the IRR Calculator to do this instantly.
Frequently Asked Questions
- Is this tool free?
- Yes — completely free, no signup required. All processing happens in your browser.
- Does the tool work offline?
- Once loaded, most features work without an internet connection since everything runs client-side.