Sequence-of-Returns Risk
The risk that poor investment returns early in retirement disproportionately damage a portfolio ability to sustain withdrawals.
Sequence-of-returns risk is the danger that poor investment returns arriving early in retirement, rather than the average return over the whole period, disproportionately damage a portfolio's ability to sustain planned withdrawals. Two portfolios can earn the identical average return over twenty years and produce very different outcomes depending only on the order in which the good and bad years occurred, because withdrawals taken during a decline lock in losses that a later recovery cannot undo for those depleted units.
- —Average return over a period does not determine outcome once withdrawals are involved; the order of returns does.
- —The exposure concentrates in roughly the five years before and after retirement withdrawals begin, sometimes called the retirement red zone.
- —During accumulation, with no withdrawals, the sequence of returns barely matters - only the ending value does.
- —Contractual income sources that do not depend on selling assets, such as an income floor, are a direct way to reduce this specific risk.
During accumulation the order of returns barely matters. Once withdrawals begin, a down year forces selling at depressed prices, and those units cannot participate in the recovery.
The exposure concentrates in roughly the five years before and after withdrawals begin, which is why that decade receives disproportionate attention in retirement income planning.
Why identical average returns can produce very different outcomes
The mechanism is straightforward once withdrawals enter the picture: money withdrawn during a market decline is withdrawn at a lower price, permanently removing those units from the portfolio before they have a chance to participate in any later recovery. A portfolio that experiences its worst years early in retirement, while withdrawals are being taken, can be depleted meaningfully faster than an otherwise identical portfolio that experiences the same bad years late, after most withdrawals are complete.
| Scenario | Early years | Later years | Effect with ongoing withdrawals |
|---|---|---|---|
| Sequence A | Below-average or negative returns | Above-average returns | Withdrawals compound the early loss; portfolio depletes faster |
| Sequence B | Above-average returns | Below-average or negative returns | Early growth cushions withdrawals; portfolio typically lasts longer |
The retirement red zone
The risk is not spread evenly across a retirement. It concentrates in roughly the five years before and the five years after withdrawals begin, since that is the window in which the portfolio is both large and simultaneously exposed to both the next market decline and the start of distributions. A decline that happens ten or fifteen years into a retirement, after the portfolio has already grown from earlier good years, generally does far less structural damage.
- —During pure accumulation with no withdrawals, sequence has little effect - only the ending value matters
- —Once withdrawals begin, the order of returns starts to matter as much as, or more than, the average return
- —The concentration of risk in the years immediately surrounding retirement is why that window receives disproportionate planning attention
Common ways to manage the exposure
Several approaches address sequence-of-returns risk directly, rather than through diversification alone, which does not eliminate the timing problem. Building an income floor from Social Security, any pension, and contractual sources reduces the amount that must be drawn from market-exposed assets during a downturn. Maintaining a cash or short-term reserve so withdrawals are not forced to come from depressed assets is another standard approach, as is retaining flexibility to reduce discretionary withdrawals in a down year.
Frequently asked questions
- What is sequence-of-returns risk in simple terms?
- It is the risk that the order in which investment returns occur, not just their average, determines how long a portfolio lasts once withdrawals begin. Bad returns early in a withdrawal period do more damage than the same bad returns occurring later.
- Does sequence-of-returns risk matter before retirement?
- Much less. During pure accumulation, with no withdrawals being taken, the order of annual returns has little effect on the final value - only the compounded average return over the period matters.
- How can an annuity address sequence-of-returns risk?
- A contract that provides guaranteed lifetime income or serves as part of an income floor reduces reliance on selling market-exposed assets during a downturn, which is the specific mechanism through which sequence risk causes damage.
- What is the retirement red zone?
- It is the informal term for the roughly ten-year window spanning the five years before and five years after retirement withdrawals begin, when sequence-of-returns risk has the greatest potential effect on how long a portfolio lasts.