Finance & Accounting
¿Qué es Internal Rate of Return (IRR)?
Definición
IRR is the discount rate that makes the net present value (NPV) of all cash flows from an investment equal to zero — in other words, the annualized return rate the investment is expected to generate. A project is worth pursuing if its IRR exceeds the hurdle rate or cost of capital.
IRR is calculated by solving for the rate r in: NPV = Σ [CF_t / (1+r)^t] = 0, where CF_t is cash flow in period t. Practically, IRR is solved iteratively (no closed-form solution). IRR is intuitive — it converts an investment's cash flow profile into a single annualized percentage return comparable to a bank interest rate. In real estate, private equity, and project finance, IRR is the primary performance metric. Common limitations: IRR assumes reinvestment at the IRR rate itself (often unrealistic for high-IRR projects), can produce multiple solutions with non-conventional cash flows, and can favor shorter-duration projects over higher-NPV longer-duration ones. Modified IRR (MIRR) addresses reinvestment rate issues. In venture capital, fund-level IRR (called 'net IRR' after fees and carry) is the standard performance benchmark reported to LPs.
Por qué es importante
IRR is the language of sophisticated investors — knowing your IRR (and its limitations) is essential for fundraising conversations, acquisition analysis, and capital project evaluation. A financial advisor or fractional CFO can build IRR models for your specific investment scenarios and help you understand whether your returns justify the capital and risk deployed.