Glossary · Definition
Sequence of returns risk
Sequence of returns risk is the danger that bad market years early in retirement permanently impair your portfolio, even if average returns over the full retirement match expectations. Two retirees with identical ‘average’ returns can end up with wildly different balances if their bad years happen at different times.
Definition
Sequence of returns risk is the danger that bad market years early in retirement permanently impair your portfolio, even if average returns over the full retirement match expectations. Two retirees with identical ‘average’ returns can end up with wildly different balances if their bad years happen at different times.
What it means
Imagine two retirees, both withdrawing $40K/year from $1M portfolios. Retiree A’s first decade is bear-market: -10%, -10%, -10% for three years, then 9% the rest. Retiree B has the reverse: 9% for years 1-7, then -10% for years 8-10. Both have the same average return. But Retiree A’s portfolio crashes to $700K early, then withdrawals at $40K/year drain it faster (5.7% withdrawal rate); the portfolio runs out at year 22. Retiree B’s portfolio grows to $1.4M early, then late losses still leave $1M+ at year 30. Same returns, different sequences = very different outcomes.
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Why it matters
Sequence risk is highest in the first 5-10 years of retirement, when withdrawals are large relative to recoverable losses. Strategies: (1) bond tent (higher bond allocation as you approach retirement, decreasing as portfolio recovers), (2) cash buffer (2-3 years of expenses in cash, drawn during down markets), (3) flexible spending rules (reduce withdrawals 10-20% during drawdowns), (4) delayed Social Security claiming (creates inflation-protected income that smooths sequence risk). The 4% rule assumes worst-case sequence; actual outcomes are usually better.
Example
Same starting $1M, same average annualized return (5%) over 10 years, $40K annual withdrawals (4% rule). Sequence A (bad first): -10%, -10%, -10%, then 9% × 7 → final balance ~$300K, on track to deplete by year 18. Sequence B (good first): 9% × 7, then -10%, -10%, -10% → final balance ~$900K, sustainable indefinitely.
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Frequently asked questions
Can I avoid sequence risk?
Not entirely — markets are unpredictable. But you can mitigate via cash buffer, bond tent, flexible spending, and delaying claims. The combination handles 95% of historical worst-cases.
Does sequence risk apply to accumulation phase too?
Less so. During accumulation, bad early years means buying at lower prices — recovery rebuilds the portfolio. During withdrawal, bad early years deplete principal that can’t be replenished.
How does this differ from longevity risk?
Longevity risk: outliving your portfolio. Sequence risk: bad market timing damaging the portfolio enough to cause early depletion. Both contribute to retirement failure; sequence is the early-stage risk, longevity the late-stage.
Related terms
- Definition4% ruleThe 4% rule says you can withdraw 4% of your starting retirement balance annually (adjusted for inflation), and your portfolio will likely last 30 years. Origin: William Bengen 1994. Modern refinements: 3.0-3.5% for longer retirements or volatile markets.
- DefinitionNominal vs real returnsNominal return is the headline number (‘your fund returned 10% this year’). Real return is what’s left after inflation (10% nominal − 3% inflation = 7% real). For long-term planning, real returns are the only number that matters because purchasing power, not dollars, is what funds your retirement.