Time-Weighted Return (TWR)
Last updated 17 July 2026
Time-weighted return, or TWR, measures investment performance while removing the effect of external cash added to or withdrawn from a portfolio. It divides the measurement period into subperiods at each cash flow, calculates the return for each subperiod, and compounds those returns. The result reflects how the invested assets performed rather than the size and timing of family contributions.
That makes TWR useful for evaluating a manager who does not control when a client deposits or withdraws money. It can be compared with an appropriate benchmark, provided that currency, fees, period, and valuation method are consistent.
Why it matters for family offices
Large family cash flows can distort a simple change in value. If the family adds money just before markets rise, the portfolio's dollar gain increases even though the manager did not choose the timing. If it withdraws money before a rise, the dollar result looks smaller. TWR isolates the manager's investment sequence from those owner-driven decisions.
TWR does not describe the family's personal economic experience on its own. Money-weighted return or internal rate of return gives greater weight to periods when more family capital was invested. Family offices often use TWR for liquid manager assessment and IRR or multiples for private investments and total cash-flow experience.
How it shows up in practice
Suppose a portfolio begins with $10 million and grows to $11 million, a 10 percent return. The family then contributes $4 million, bringing the value to $15 million. During the second subperiod, the portfolio grows by 5 percent to $15.75 million. TWR compounds 1.10 and 1.05, then subtracts one, producing 15.5 percent.
The $4 million contribution did not create investment return, so it is excluded from each subperiod calculation. The office reconciles the cash-flow date and valuations before calculating TWR, then compares the result with the manager's benchmark and fee basis. Accurate timing matters because a cash flow assigned to the wrong day can change the reported performance.
Related terms
Internal Rate of Return (IRR)
The annualised return that accounts for the size and timing of all cash flows into and out of an investment. IRR is the standard performance measure for private equity and other investments with irregular cash flows. Because principals control when money moves, IRR reflects the investor's actual experience, unlike time-weighted measures.
Benchmark
A standard, usually a market index or blend of indices, against which portfolio performance is compared. Benchmarks reveal whether managers are adding value relative to what passive exposure would have delivered. Family offices typically set benchmarks per asset class and for the total portfolio in the investment policy statement.
Multiple on Invested Capital (MOIC)
A private markets metric that divides total value, both realised and unrealised, by the capital invested. A MOIC of 2.0x means the investment has doubled the money put in, regardless of how long that took. It is usually read alongside IRR, which adds the time dimension MOIC ignores.
Consolidated Reporting
The aggregation of all of a family's assets, liabilities, and performance, across every custodian, entity, currency, and asset class, into a single coherent set of reports. It answers the deceptively simple questions of what the family owns, what it is worth, and how it is performing. Consolidated reporting is the core deliverable of most family offices and the primary function of family office software.
Assets Under Management (AUM)
The total market value of assets that a family office, wealth manager, or fund manages on behalf of its clients or family. AUM is a standard measure of scale and often determines fee levels, access to institutional products, and regulatory obligations. For family offices, consolidated AUM across all entities and custodians is the starting point for meaningful oversight.
Further reading
See how family offices put this into practice
Asora gives family offices one clear view of their entire wealth.
Schedule a demo