Dollar-Weighted Return (IRR) Definition and Meaning

Your personal investment return that factors in when you added or withdrew money—reflecting what you actually experienced, not just what the fund did.

Here's a scenario that trips up a lot of investors: a fund returns 10% for the year, but you somehow lost money. How? Because you poured most of your cash in right before a dip. Dollar-weighted return—also called Internal Rate of Return (IRR) or money-weighted return—captures that reality.

Unlike time-weighted return (which measures the fund's performance regardless of your cash flows), dollar-weighted return reflects your personal experience based on when you added or pulled money.

Here's a concrete example: you invest $10,000 in January, the fund drops 20%, then you add $50,000. Even if the fund recovers to flat for the year, your dollar-weighted return is negative—because most of your money only experienced the decline.

This is the more honest metric for evaluating your personal financial outcomes. It answers "how did I actually do?" rather than "how did the fund do?" And the gap between those two answers can be surprisingly large.

Research consistently shows that average investors' dollar-weighted returns trail the time-weighted returns of the funds they own. Studies show a persistent "behavior gap" of 2-4% annually, mostly because people buy during euphoria and sell during panic.

If your dollar-weighted return consistently lags the investments themselves, that's a signal to automate your contributions and stop trying to time things. A portfolio tracker that calculates dollar-weighted returns gives you the most honest picture of how you're really doing.

Frequently Asked Questions

▸Which is better: dollar-weighted or time-weighted return?

Neither is 'better'—they answer different questions. Time-weighted return tells you how the investment performed (great for comparing funds). Dollar-weighted return tells you how you personally did, including your timing of contributions. For tracking your actual financial progress, dollar-weighted is more relevant.

▸Why is my return different from the fund's return?

If you added money after a gain or pulled money after a loss, your dollar-weighted return will differ from the fund's time-weighted return. This is totally normal and happens to most investors. The gap highlights how much contribution timing affects your real-world results.