What is sequence of returns risk?

Sequence of returns risk is the danger that the order in which your portfolio experiences gains and losses, not just the average return over time, can determine whether your money lasts. A portfolio that experiences poor returns early in retirement, while you are also withdrawing money, can be permanently damaged even if the long-run average return is the same as a portfolio that saw good returns first.

Why does the timing of returns matter more in retirement than during accumulation?

During your working years, you are adding money to your portfolio, so a downturn lets you buy more shares at lower prices. In retirement, you are withdrawing money, so a downturn forces you to sell more shares at depressed prices to generate the same income, permanently shrinking the base that has to recover later.

When is sequence of returns risk highest?

The risk is concentrated in the years immediately before and after you start taking withdrawals, often called the retirement red zone. A market downturn in this window has an outsized, lasting effect on your plan, while the same downturn 15 years into retirement, after your portfolio has already grown through good years, would do far less damage.

How can I protect my retirement plan from a bad sequence of returns?

Common approaches include holding one to three years of spending in cash or short-term bonds so you are not forced to sell equities during a downturn, building flexibility into your spending so you can reduce withdrawals in bad years, delaying retirement or Social Security if a downturn hits right before you planned to stop working, and stress-testing your plan against historical bad sequences rather than just an average return.

Does a single average return assumption capture sequence of returns risk?

No. A projection that assumes a flat average return every year, for example 7% annually, will look identical regardless of when the gains and losses occur, which hides the risk entirely. Capturing this risk requires testing your plan against many possible sequences, including historically bad ones, not just a single smoothed average.

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Sequence of Returns Risk: Why the Order of Market Returns Matters

Two retirees can experience the exact same average market return over 30 years and end up in completely different financial positions, simply because of the order the returns arrived in. This is sequence of returns risk, and it is one of the most underappreciated dangers in retirement planning, precisely because it is invisible in any projection that uses a single flat average return.

Why order matters when you are withdrawing money

While you are working and adding to your portfolio, a market downturn is not necessarily bad news, you are buying shares at lower prices, which can boost your long-run return. Retirement reverses this dynamic completely. Once you start withdrawing for income, a downturn forces you to sell more shares to generate the same dollar amount, locking in losses and permanently shrinking the asset base that needs to recover and continue funding your future withdrawals.

Consider two retirees who each average 7% annual returns over a 25-year retirement, both withdrawing the same amount. If one experiences strong returns in years one through five and the other experiences a steep decline in those same years, the second retiree can run out of money entirely while the first finishes with a substantial balance left over, even though their long-run averages were identical.

The "retirement red zone"

The danger is not spread evenly across retirement. It is concentrated in the years immediately before and after you stop working and start drawing down your accounts, sometimes called the retirement red zone. A downturn that hits during this window does outsized, often irreversible damage, while the same downturn occurring a decade or two into a successful retirement, after your portfolio has already compounded through good years, would barely register.

This is why the timing of your retirement date itself carries real risk. Two people with identical savings who retire just a few years apart can end up with very different outcomes purely because of what the market happened to do in the years surrounding their individual retirement dates, a factor entirely outside their control.

Why average-return projections hide this risk

Many retirement calculators, and a lot of back-of-envelope planning, assume a flat average return every single year, say 6% or 7%. Under that assumption, the order of returns is irrelevant by construction, the math produces the same ending balance no matter when the gains occur. That makes the projection simple to build, but it also makes it blind to exactly the risk that has derailed real retirements throughout history.

A more realistic plan needs to test many different sequences, including historically poor ones such as the early 2000s or 2008, to see whether your withdrawal plan survives a bad run of years rather than only an average one. If your plan only works when returns arrive in a convenient order, it is not actually a plan, it is a hope.

Strategies that reduce the damage

A cash or short-term bond reserve covering one to three years of spending is one of the most direct defenses, it lets you fund withdrawals from a stable source during a downturn instead of being forced to sell equities at depressed prices. This is the core idea behind the bucket strategy described in our withdrawal strategies guide.

Building flexibility into your spending, being able to trim discretionary expenses in a down year, reduces how much you need to withdraw exactly when selling is most costly. Some retirees also build in the option to delay retirement, part-time work, or delay claiming Social Security if a downturn hits right as they are about to stop working, since each of those choices reduces how much the portfolio has to support during the most dangerous years.

Not financial advice

This guide is for informational purposes only. Nothing here constitutes financial, tax, or legal advice. Past market performance does not guarantee future results. Always consult a qualified professional before making significant financial decisions.

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