IRR

Full Definition

IRR is the annualized return that makes the present value of all investment cash outflows equal to the present value of all cash inflows. Conceptually, it is the rate at which you break even in NPV terms. For a PE fund investing $100M in an acquisition and receiving $300M from a sale five years later, the IRR is approximately 25%—the annual compounded return on the initial investment. Unlike ROI, which ignores time, IRR accounts for the timing of cash flows: receiving $300M in year 2 versus year 7 produces dramatically different IRRs despite the same nominal return multiple. In private equity, IRR is the standard performance metric for individual investments and fund-level returns, reported alongside MOIC (Multiple of Invested Capital). A 3x MOIC achieved over 3 years generates a very different (and higher) IRR than the same 3x achieved over 7 years because the capital was compounding over a shorter period. This time sensitivity makes IRR a powerful incentive for PE sponsors to realize returns as quickly as possible—through dividend recapitalizations, partial secondary sales, or early exits—even before the company has reached its maximum value, if the IRR optimization calculus favors early realization. IRR has important limitations for investment comparison. It can be manipulated by front-loading cash returns through dividend recaps, assumes reinvestment of all intermediate cash flows at the same IRR rate (often unrealistic), can produce multiple values for investments with unconventional cash flow patterns, and favors small investments with high returns over large investments with moderately high returns. For these reasons, MOIC should always be evaluated alongside IRR, and LP investors track both Distributed-to-Paid-In (DPI) ratios and Total Value-to-Paid-In (TVPI) ratios as IRR supplements.

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