Time Weighted Return vs. Money Weighted Return Explained

Two investment reports can show different returns for the same portfolio and both can be correct.

The difference may come from the performance method used.

The central distinction between a time weighted return vs. money weighted return is how each method treats deposits and withdrawals:

Time-weighted return, or TWR, removes the effect of external cash flows to show how the investments or strategy performed.
Money-weighted return, or MWR, incorporates the size and timing of cash flows to show the return experienced by the investor’s money.

Time-weighted return is commonly useful for comparing a portfolio manager, investment strategy, fund, or benchmark. Money-weighted return is often more relevant when evaluating how an individual investor’s contribution and withdrawal decisions affected results.

Neither measure is universally better. They answer different questions, and understanding both can prevent you from misreading a brokerage dashboard, advisory report, retirement account, or portfolio tracker.

Time-Weighted vs. Money-Weighted Return at a Glance

Feature	Time-weighted return	Money-weighted return
Common abbreviations	TWR, TWRR	MWR, MWRR
Primary question	How did the investments or strategy perform?	How did the investor’s money perform?
Deposits and withdrawals	Effect is generally removed	Size and timing are included
Weighting	Links performance across time periods	Gives more influence to periods containing more invested capital
Common use	Manager, strategy, fund, and benchmark comparison	Personal portfolio experience and goal progress
Related calculation	Geometrically linked subperiod returns	Internal rate of return, often IRR or XIRR
Affected by investor timing?	Designed to minimize that effect	Yes
Requires valuations around cash flows?	Yes, or an accepted approximation	Requires dated cash flows and beginning/ending information
Can differ from account growth?	Yes	Yes, because growth also includes net contributions and withdrawals
Better for evaluating an adviser?	Often, when the adviser does not control external cash flows	Often when the manager controls the timing of capital calls and distributions

The result also depends on the data, valuation frequency, fee treatment, income treatment, period, annualization, and software methodology.

What Is a Time-Weighted Return?

A time-weighted return measures the compounded performance of an investment portfolio while neutralizing the effect of external deposits and withdrawals.

The calculation generally works by:

Dividing the measurement period into subperiods at external cash-flow points.
Calculating the portfolio’s return during each subperiod.
Linking the subperiod returns to produce the return for the full period.

Suppose a portfolio performs well before an investor adds a large deposit and then performs poorly after the deposit. TWR treats the return in each subperiod as a performance result rather than allowing the later, larger account balance to dominate the entire calculation.

That makes TWR useful when the investor—not the manager—decides when to add or remove money.

The GIPS standards, maintained by CFA Institute, generally require time-weighted returns for many portfolio presentations, with specified circumstances in which money-weighted returns may be used instead. The objective is to make investment-firm performance more comparable.

What Is a Money-Weighted Return?

A money-weighted return measures performance while accounting for when money entered or left the investment and how large each cash flow was.

It gives greater economic weight to periods when more capital was invested.

MWR is commonly calculated as an internal rate of return. The calculation searches for the annualized rate that reconciles:

The initial investment
Later contributions
Withdrawals and distributions
The ending portfolio value
The dates or periods associated with those cash flows

When cash flows occur on irregular dates, portfolio systems commonly use an approach comparable to XIRR rather than a periodic IRR.

Microsoft’s XIRR documentation describes the function as calculating an internal rate of return for cash flows that do not necessarily occur at regular intervals.

Money-weighted return reflects the investor’s actual timing experience. If the investor adds a large amount immediately before a decline, MWR will be pulled down more heavily than TWR.

The Main Difference Between TWR and MWR

TWR and MWR assign influence differently.

Time-weighted return emphasizes each performance period

TWR asks how one dollar invested throughout the strategy would have grown, after controlling for external cash flows.

It is designed to avoid rewarding or punishing a manager for a client’s decision to:

Add a bonus to the account
Withdraw money for a home purchase
Roll over a retirement balance
Transfer assets to another institution
Make an annual IRA contribution
Take a required distribution

Money-weighted return emphasizes the amount actually invested

MWR gives more weight to the portfolio’s performance when the investor had more money at risk.

It is affected by:

Contribution timing
Withdrawal timing
Contribution size
Distribution size
Beginning value
Ending value
Cash-flow dates

If most of the money was invested during a weak period, MWR may be lower than TWR. If most was invested during a strong period, MWR may be higher.

A Simple Time-Weighted vs. Money-Weighted Example

Assume an investor starts the year with $10,000.

During the first half of the year, the portfolio gains 10%, increasing to $11,000.

The investor then adds $40,000, bringing the account to $51,000. During the second half of the year, the portfolio loses 5%, ending at $48,450.

Event	Portfolio amount
Starting value	$10,000
Value after first-half 10% gain	$11,000
Investor contribution	$40,000
Value immediately after contribution	$51,000
Ending value after second-half 5% decline	$48,450

Time-weighted interpretation

TWR links the first-half gain of 10% with the second-half loss of 5%. The full-year time-weighted result is a positive 4.5%.

The investor’s $40,000 contribution does not itself count as investment performance.

Money-weighted interpretation

MWR reflects that only $10,000 experienced the strong first half, while $51,000 was exposed to the weak second half. The money-weighted result is therefore much less favorable and can be negative in this example, depending on the exact cash-flow dates used.

The strategy had a positive time-weighted result, but the investor’s capital timing produced a worse personal experience.

Can TWR Be Positive While MWR Is Negative?

Yes.

This can happen when:

The portfolio earns a strong percentage return while the account balance is relatively small.
The investor adds a large amount.
The portfolio then declines while the larger amount is invested.

The linked subperiod performance may remain positive, producing a positive TWR. The investor may still lose money on a net economic basis after the large contribution, producing a negative MWR.

CFA Institute research has noted that a time-weighted return can be positive while the money-weighted counterpart is negative.

The reverse is also possible. An investor who adds substantial money before a strong period may have an MWR above the portfolio’s TWR.

What Counts as an External Cash Flow?

An external cash flow is money or property moving into or out of the portfolio being measured.

Common external inflows include:

New cash contribution
Rollover into the account
Transfer of securities from another portfolio
Employer contribution
Deposit from a bank account

Common external outflows include:

Cash withdrawal
Transfer to another account
Retirement distribution
Payment taken from the portfolio
Securities transferred out

The measurement boundary matters.

If you transfer $20,000 from one investment account to another:

It is an external outflow from the first account.
It is an external inflow into the second account.
It may be an internal movement when both accounts are measured as one combined household portfolio.

The performance report must define which accounts and assets are included.

Are Dividends and Interest External Cash Flows?

Usually not when they are earned by investments already inside the portfolio.

Dividends, bond interest, and fund distributions are investment income. A total-return calculation generally includes that income, whether it is reinvested or held as portfolio cash.

If income is paid out of the measured portfolio to the investor, the payment can become an external outflow at the portfolio boundary.

Confusing investment income with a new contribution can distort performance. Review whether the report presents:

Price return only
Total return including income
Gross return before certain fees
Net return after specified fees and costs

Investor.gov warns that fees and expenses reduce investment returns and recommends checking which costs are included or excluded from performance claims.

Why Investment Managers Often Use Time-Weighted Return

A manager usually does not control when a client receives an inheritance, needs a down payment, changes jobs, or withdraws money for living expenses.

TWR attempts to isolate investment performance from those decisions.

It can help compare:

One manager with another
A portfolio with its benchmark
A strategy across different client accounts
Results across calendar periods
A fund with a relevant index

CFA Institute guidance explains that TWR is generally more appropriate for asking how an adviser performed relative to a market index, while MWR can be more useful for evaluating progress toward the investor’s financial goals.

That does not mean every TWR comparison is fair. The benchmark, asset allocation, risk level, fees, taxes, investment restrictions, cash holdings, and time period must also be appropriate.

WealthLedger’s guide to systematic and unsystematic investment risk explains why two portfolios can show similar returns while carrying different kinds of risk.

Why Individual Investors May Prefer Money-Weighted Return

An investor experiences returns on actual dollars, not on a hypothetical constant balance.

MWR helps answer questions such as:

Did my contribution timing help or hurt my results?
How did the capital I actually invested perform?
Am I progressing toward my financial goal?
How did withdrawals affect my result?
What return did my personal sequence of cash flows produce?

This can be especially useful for an account with:

Regular monthly contributions
Large rollovers
Irregular deposits
Retirement withdrawals
Tuition payments
Home-purchase withdrawals
Capital calls and distributions

However, MWR should not automatically be used to blame or praise the portfolio manager. A client-driven cash flow immediately before a market move can materially affect MWR even though the manager did not control its timing.

When Money-Weighted Return Is Used for Private Investments

MWR is common in private equity, venture capital, real estate partnerships, and other investments where the manager or general partner controls capital calls and distributions.

These investments may have:

Irregular contributions
Long holding periods
Limited interim valuations
Manager-controlled capital calls
Manager-controlled distributions
Illiquid assets
A fixed life or commitment structure

In those circumstances, cash-flow timing is part of the manager’s decision-making and may be economically meaningful.

CFA Institute’s overview of the GIPS standards notes that money-weighted returns may be presented instead of time-weighted returns when a firm controls external cash flows and specified conditions are met, including certain closed-end, fixed-life, fixed-commitment, or significantly illiquid strategies.

Private-investment performance should not be evaluated using IRR alone. Investors may also review:

Multiple on invested capital
Distributions to paid-in capital
Residual value
Public-market equivalents
Vintage year
Fees and carried interest
Valuation methodology
Realized and unrealized value

Money-Weighted Return vs. IRR

Money-weighted return is commonly expressed through an internal rate of return calculation.

The terms are often used interchangeably in personal portfolio reporting, but context matters.

IRR

IRR commonly assumes cash flows occur at regular intervals, such as monthly or annually. Spreadsheet software may require at least one negative and one positive cash flow and uses an iterative process to find a result.

XIRR

XIRR uses actual dates for irregular cash flows. This is often more appropriate for a real brokerage account because contributions and withdrawals rarely occur at perfectly equal intervals.

MWR

MWR is the performance concept. IRR or XIRR is the calculation technique commonly used to produce it.

The sign convention must be consistent. Money paid into an investment is normally entered with one sign, while money received and ending value use the opposite sign.

Limitations of IRR and XIRR

IRR-based results can have complications.

More than one possible result

When cash flows change direction multiple times, an IRR calculation can sometimes produce more than one mathematically possible rate.

No result

Some cash-flow patterns do not produce a valid solution. Software may return an error.

Sensitivity to dates and values

A mistyped contribution date or omitted withdrawal can materially change MWR.

Difficult interpretation over short periods

Annualizing a very short result can produce an eye-catching number that does not represent a sustainable outcome.

Reinvestment assumptions

IRR can imply assumptions about reinvesting intermediate cash flows that may not match reality.

Valuation uncertainty

An estimated ending value for an illiquid asset can make the reported return appear more precise than the valuation actually is.

Microsoft notes that XIRR uses an iterative search and can produce an error when it cannot find a result. A different starting estimate can matter in unusual cash-flow patterns.

How Time-Weighted Return Is Calculated

A precise TWR calculation generally requires a portfolio value around each external cash flow.

The process is:

Record the starting portfolio value.
Identify every external deposit and withdrawal.
Value the portfolio immediately before or around each cash flow under the chosen convention.
Calculate the return for each subperiod.
Link the subperiod results.
Report the result for the full period.

If there are daily valuations, software can calculate daily returns and link them. If valuations are less frequent, an approximation such as Modified Dietz may be used.

The GIPS standards include detailed methodology and cash-flow guidance for professional performance reporting. A personal spreadsheet should not be described as GIPS-compliant merely because it calculates a time-weighted number.

How Money-Weighted Return Is Calculated

MWR generally requires:

Opening portfolio value and date
Every external contribution and date
Every external withdrawal and date
Ending portfolio value and date

Software then finds the annualized rate that makes the dated cash-flow series consistent with the ending value.

For a simple spreadsheet:

List each date in one column.
List the corresponding cash flow in another column.
Treat contributions and investment value using consistent opposite signs.
Include the ending value on the final date.
Apply an XIRR function for irregular dates.
Review the result for obvious input errors.

This is a calculation tool, not investment advice. A correct spreadsheet output can still be misleading if the cash flows, account boundary, fees, or ending value are wrong.

TWR vs. MWR When There Are No Cash Flows

If there are no external cash flows during the measurement period, TWR and MWR should generally produce the same or very similar result when they use consistent dates, valuations, fees, and annualization.

Large differences usually indicate one or more of the following:

Contributions or withdrawals occurred
Cash-flow dates differ
One result is gross and the other net of fees
One is cumulative and the other annualized
One includes income and the other does not
Different accounts are included
Different valuation data is used
One result is an estimate

Do not compare the percentages until you understand the underlying settings.

TWR vs. MWR With Regular Contributions

Regular contributions make MWR particularly sensitive to the sequence of returns.

Suppose an investor contributes to a 401(k) every two weeks. More money accumulates over time, so later market performance affects a larger balance.

If markets are weak early and strong later:

Early contributions may buy more shares at lower prices.
The larger later balance may participate in the recovery.
MWR may exceed TWR.

If markets are strong early and weak later:

A larger accumulated balance may experience the later decline.
MWR may trail TWR.

This does not prove that the investor should attempt to time contributions. It explains why personal return can differ from the fund’s published return.

WealthLedger’s comparison of dollar-cost averaging and lump-sum investing explains how contribution timing changes market exposure and risk.

TWR vs. MWR With Withdrawals

Withdrawals can also create a major difference.

An investor who withdraws most of a portfolio before a market decline may have an MWR above TWR because less money was exposed to the loss.

An investor who withdraws before a rally may have an MWR below TWR because the money was no longer invested during the gain.

In retirement, withdrawals combine with market returns to create sequence-of-returns risk. A percentage return alone does not show whether the portfolio can support future spending.

TWR vs. MWR for Comparing With the S&P 500

TWR is generally the more direct measure for comparison with a conventional market-index return because the index return does not reflect the investor’s personal deposits and withdrawals.

However, the comparison must still be suitable.

Ask whether:

The portfolio is actually designed to resemble U.S. large-company stocks
The benchmark includes reinvested dividends
The portfolio return includes income
Both returns cover identical dates
Fees are treated consistently
The portfolio holds bonds, international assets, or cash
Risk and volatility are comparable

A diversified retirement portfolio should not automatically be judged against the S&P 500 alone.

Our guide to three-fund portfolio allocation explains why a portfolio containing U.S. stocks, international stocks, and bonds needs more thoughtful benchmark context.

Why Your Brokerage Return May Differ From a Fund’s Return

A fund’s published return generally reflects the fund itself for a standardized period. Your account return reflects your ownership dates, trades, cash flows, fees, and possibly taxes.

Differences may result from:

Buying after the fund’s measurement period began
Selling before it ended
Adding or withdrawing money
Holding uninvested cash
Paying advisory or platform fees
Trading at different prices
Reinvesting or withdrawing distributions
Owning other securities in the account
Comparing MWR with a fund’s TWR

The fund can report a positive year while an investor in that fund has a negative money-weighted return because the investor bought shortly before a decline.

Account Return vs. Investment Gain

Portfolio growth is not the same as investment return.

If an account rises from $20,000 to $35,000 after the investor contributes $14,000, the investments did not earn $15,000. Most of the increase came from a deposit.

Likewise, an account can end below its starting value even when investments performed positively if the investor made a large withdrawal.

Separate these figures:

Beginning balance
Contributions
Withdrawals
Investment income
Market gains or losses
Fees
Ending balance
Rate of return

A dashboard that displays only account growth can create a misleading impression of performance.

Realized and Unrealized Results in TWR and MWR

Both return methods generally use total portfolio value, not only gains that have been realized through sales.

An unsold investment’s change in market value affects the account valuation and therefore performance. Dividends, interest, and realized gains also contribute to total return.

Our realized vs. unrealized gains comparison explains the distinction between a gain reflected in current value and one generally recognized after a disposition.

A positive TWR or MWR does not indicate how much tax is currently due. Tax results depend on account type, sales, distributions, holding periods, basis, losses, and other rules.

Gross Return vs. Net Return

Before comparing any two percentages, determine whether they are gross or net.

Gross return

A gross return may be calculated before deducting some or all management fees and expenses. The exact definition should be disclosed.

Net return

A net return reflects specified fees and costs. It may still exclude taxes or certain external charges.

Potential costs include:

Advisory fee
Fund expense ratio
Trading cost
Custody or platform charge
Performance fee
Sales load
Borrowing cost
Tax

Investor.gov advises investors to ask which fees and expenses were excluded from a performance calculation and how they would have affected the result.

Compare gross with gross and net with net. A net MWR and gross TWR do not isolate only the effect of cash flows.

Cumulative vs. Annualized Return

A cumulative return measures the total result over the full period. An annualized return converts a multi-period result into an average compounded yearly rate.

They are not interchangeable.

A 30% cumulative return over three years does not mean the portfolio earned 10% in each year. Compounding and the sequence of annual results matter.

Annualizing a period of one year or less can also exaggerate a short-term result. A portfolio that gains sharply in one month is not guaranteed to repeat that pace for twelve months.

Check:

Start and end dates
Whether the result is cumulative or annualized
Whether the period exceeds one year
Whether annualization follows the provider’s disclosed methodology

Why Two Apps Can Show Different TWR Results

Even two reports labeled “time-weighted return” can differ.

Possible reasons include:

One uses daily valuations and the other monthly valuations
Cash flows are treated at the start or end of a day
One uses true TWR and another uses Modified Dietz
Securities have different closing prices or price sources
One includes accrued interest
One includes fees differently
One handles dividends on ex-date and another on payment date
Time zones differ
One includes unsettled trades or cash
Rounding differs

Ask the provider for its methodology before concluding that one number is wrong.

Why Two Apps Can Show Different MWR Results

MWR differences commonly result from:

Missing cash flows
Different transaction dates
Different opening or ending dates
IRR versus XIRR
Different sign conventions
Different ending valuations
Fees treated as cash flows in one system
Transfers misclassified as contributions or withdrawals
One app combining accounts and another measuring separately

Export the transaction history and reconcile every external cash flow when the difference is material.

Modified Dietz vs. Time-Weighted Return

Modified Dietz is an approximation that weights cash flows according to how long they were present during the period.

It can be useful when:

Daily valuations are unavailable
Cash flows are not extremely large
A portfolio system calculates monthly returns
A reasonable approximation is sufficient

True TWR values the portfolio at each external cash-flow point and links the resulting subperiods. Modified Dietz estimates the effect using available beginning, ending, and cash-flow data.

The two results may be close when cash flows are small and markets are stable. They may diverge when cash flows are large or volatility is high.

Which Return Should a Financial Adviser Show?

A useful performance report may show both.

TWR can help evaluate:

Security selection
Asset allocation implementation
Portfolio-manager decisions
Benchmark-relative performance

MWR can help evaluate:

The client’s actual capital experience
Contribution and withdrawal timing
Progress toward goals
The impact of investor-controlled cash flows

CFA Institute commentary recommends performance reports that fairly consider cash flows, disclose portfolio value, use relevant periods, and compare results with an appropriate benchmark.

The adviser should explain:

Calculation method
Account scope
Benchmark
Gross or net treatment
Included fees
Annualization
Material assumptions
Whether results are estimated

TWR vs. MWR for Rebalancing

Rebalancing trades within a portfolio are generally not external cash flows because money does not cross the portfolio boundary.

Selling one fund and buying another can affect future performance, taxes, transaction costs, and risk, but it is not the same as adding or removing capital.

If money is transferred between accounts that are measured together, it may be internal at the household level. If each account is measured separately, the movement becomes an outflow from one and an inflow to the other.

WealthLedger’s guide to how often to rebalance a 401(k) explains why allocation control should be based on targets, drift, costs, and plan rules rather than one performance number.

TWR vs. MWR for Multiple Accounts

An investor may have a 401(k), IRA, taxable brokerage account, and health savings account.

Performance can be calculated:

Separately for each account
For all accounts combined
By investment strategy
By household goal
By tax treatment

The same transfer can be external at the account level and internal at the combined-portfolio level.

For example, moving $25,000 from a 401(k) to an IRA is an outflow from the 401(k) and an inflow to the IRA. When both accounts are measured as one retirement portfolio, the rollover may be internal.

Define the portfolio boundary before interpreting the return.

TWR vs. MWR for Target-Date and Index Funds

A fund’s standardized published return is intended to show how the fund performed, not how every shareholder’s personal cash flows performed.

An investor who contributes every payday will have an MWR reflecting those purchases. The fund’s return for the same calendar period will normally be a standardized time-based result.

WealthLedger’s comparison of target-date funds and index funds explains why fund structure, allocation, glide path, diversification, and fees must be reviewed alongside historical performance.

Do not select a fund solely because one return measure is higher over a chosen period.

Common TWR and MWR Mistakes

Calling contributions investment gains

A deposit increases account value but is not a return.

Comparing MWR directly with an index

The index generally does not share the investor’s personal cash-flow pattern. Use TWR for a more like-for-like strategy comparison or construct an appropriate cash-flow-adjusted benchmark.

Assuming TWR is the investor’s actual experience

TWR removes the effect of cash-flow timing. It may not match the return earned on the investor’s actual dollars.

Blaming the manager for client-controlled cash flows

MWR can be influenced by deposits and withdrawals the manager did not control.

Ignoring fees

Gross performance can look materially better than the return retained by the investor.

Comparing different periods

A calendar-year return and since-inception return do not answer the same question.

Mixing cumulative and annualized figures

Check the label and measurement period.

Omitting dividends

Compare total returns when assessing investment performance.

Using incorrect cash-flow dates

MWR is sensitive to timing. Use settlement or effective dates consistently under the chosen methodology.

Treating an estimate as exact

Illiquid valuations, missing prices, and approximations limit precision.

Questions to Ask About an Investment Return

Before relying on a reported percentage, ask:

Is this TWR, MWR, IRR, XIRR, or another method?
Which accounts and assets are included?
What are the exact start and end dates?
Is the result cumulative or annualized?
Are dividends and interest included?
Is it gross or net of fees?
Which fees and expenses are excluded?
How are deposits and withdrawals treated?
What valuation frequency is used?
Are any prices or values estimated?
Which benchmark is used and why is it appropriate?
Is the benchmark a total-return index?
Are taxes included?
Are returns verified or audited?
Can the provider supply its calculation methodology?

Which Is Better: Time-Weighted or Money-Weighted Return?

Use the measure that fits the question.

Time-weighted return may be better when you want to:

Evaluate a manager or strategy
Compare a portfolio with an index
Compare two funds over the same period
Remove investor-controlled cash-flow effects
Review consistency across accounts

Money-weighted return may be better when you want to:

Measure your personal investment experience
Evaluate progress toward a goal
Include the timing of contributions and withdrawals
Review a private investment with manager-controlled cash flows
Understand how capital timing affected results

Both may be useful when you want to:

Separate strategy performance from investor behavior
Explain why account experience differs from a benchmark
Review an adviser relationship
Evaluate retirement contributions and withdrawals
Diagnose large performance-report differences

Frequently Asked Questions

What is the difference between time-weighted and money-weighted return?

Time-weighted return removes the effect of external deposits and withdrawals to measure investment or strategy performance. Money-weighted return includes the amount and timing of those cash flows to measure the investor’s capital experience.

Is money-weighted return the same as IRR?

MWR is commonly calculated as an internal rate of return. XIRR is frequently used when cash flows occur on irregular dates.

Which return is better for comparing a manager with the S&P 500?

TWR is generally more suitable because it neutralizes client cash flows, but the S&P 500 must still be an appropriate benchmark and both results should use consistent dates, income, and fee treatment.

Which return is better for my personal portfolio?

MWR may better reflect how your actual invested dollars performed. TWR remains useful for evaluating the underlying investments or adviser independently of your contribution timing.

Why is my personal return lower than my fund’s return?

You may have invested more before a weak period, held cash, paid additional fees, bought on different dates, or compared your money-weighted return with the fund’s standardized time-weighted return.

Can money-weighted return be higher than time-weighted return?

Yes. This can occur when more of the investor’s capital is present during stronger performance periods.

Can time-weighted return be positive when I lost money?

Yes. A portfolio can have a positive TWR while the investor has a negative money-weighted experience if a large contribution occurs before a decline.

Do contributions count as returns?

No. Contributions increase account value but are external cash flows, not investment gains.

Are dividends included in TWR and MWR?

They generally should be included in total-return performance. Their treatment depends on whether they remain inside the portfolio or are paid out across the measurement boundary.

Does TWR ignore fees?

Not necessarily. Either TWR or MWR can be presented gross or net of specified fees. Review the disclosure.

Is XIRR accurate for an investment portfolio?

XIRR can calculate a money-weighted return from irregular dated cash flows, but accuracy depends on complete inputs, correct signs and dates, a reliable ending value, and a cash-flow pattern that produces a valid solution.

Why do two brokerages show different returns?

They may use different methods, account boundaries, cash-flow timing, price sources, valuation frequencies, fee treatment, annualization, or income treatment.

Does rebalancing count as a cash flow?

Trades within the measured portfolio are generally internal and not external cash flows. Moving assets across the portfolio boundary can be an external flow.

Should an adviser report both TWR and MWR?

Showing both can be useful because TWR explains strategy performance and MWR explains the client’s capital experience. The adviser should clearly disclose methodology, fees, periods, and benchmarks.

Final Verdict

The time weighted return vs. money weighted return comparison is not about finding one universally correct percentage.

Each measure answers a different question:

TWR asks how the investment strategy performed after removing the effect of external cash flows.
MWR asks how the investor’s actual money performed after including the timing and size of contributions and withdrawals.

TWR is commonly more appropriate for evaluating a liquid portfolio manager, fund, or strategy against a relevant benchmark. MWR is often more useful for understanding personal goal progress, contribution timing, withdrawals, and investments in which the manager controls capital calls and distributions.

Before comparing performance:

Identify the calculation method.
Confirm the account boundary.
Use identical dates.
Distinguish cumulative from annualized returns.
Check whether income is included.
Compare gross with gross or net with net.
Review fees, taxes, and estimated values.
Select a suitable benchmark.
Reconcile external cash flows.

When TWR and MWR differ substantially, the difference is valuable information. It shows that the timing and amount of capital affected the investor’s experience. Reviewing both can provide a clearer picture than relying on either percentage alone.

This article provides general educational information and does not constitute individualized investment, financial, tax, accounting, performance-verification, or legal advice. Return methodologies, cash-flow classifications, valuations, benchmarks, fee treatment, annualization, reporting requirements, spreadsheet results, and GIPS applicability vary by provider, investment, account, software, and circumstances. Past performance does not guarantee future results. Verify material calculations and consult qualified professionals before relying on a performance figure for an investment or financial decision.