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Hong KongSequence of returns risk: why the order matters when you withdraw
When withdrawals are being taken, the order of returns matters as much as the average. Poor returns in the early years force selling more shares at low prices, permanently reducing the base - which the same returns later would not do.
One of the more counter-intuitive ideas in the domain, and a genuinely important one.
The core idea
While you are accumulating, the order of returns does not matter. The same set of returns in any order produces the same ending balance.
While you are withdrawing, it matters enormously. Two clients with identical average returns can end thirty years apart in outcome depending on when the bad years arrived.
Why
Because withdrawals are taken regardless of what the market did. Timing decides it.
A fall in year one means selling more shares to fund the same income. Those shares are gone and cannot participate in the recovery, so the base from which everything else compounds is permanently smaller.
The same fall in year twenty-five affects a portfolio that has already delivered most of its work.
The five years before and after retirement are the period of maximum vulnerability. The portfolio is at its largest, withdrawals are beginning, and there is no earned income to fall back on. That window deserves a different allocation from the decade before it.
What reduces it
- Cash reserve. Two to three years of income in cash, so a downturn does not force selling equities.
- Flexible spending. Reducing withdrawals in a bad year is the single most effective response.
- A rising equity glide path. More conservative at retirement, becoming more aggressive afterwards, which reverses the conventional approach and has research support.
- Guaranteed income. Social Security, a pension or an annuity covering essential spending removes the need to sell in a downturn.
- Working longer, or part time. Shortens the withdrawal period and delays the first sale.
Flexible spending is the most powerful and the least discussed. A client who can cut discretionary spending by ten per cent in a bad year has bought a great deal of protection. Ten per cent buys a lot.
How the exam asks it
Two scenarios with the same average return in different orders, and a question about why the outcomes differ. Or a description of a client retiring into a downturn and a question about what to recommend.
The answer is rarely to change the long-term allocation. It is to protect the near-term withdrawals so the long-term allocation can be left alone.
The connection to withdrawal rate
Sequence risk is the reason a sustainable withdrawal rate is well below the expected return. A portfolio expected to return seven per cent cannot safely support a seven per cent withdrawal, because the variance around the average does the damage. Variance does the damage.
That gap between expected return and safe withdrawal rate is what sequence risk costs.
Dollar limits here are indexed annually and the transfer tax exclusion was changed by the 2025 reconciliation act. Confirm the current figure before relying on it.
Common questions
What is sequence of returns risk?
The risk that the order of returns, not just the average, determines the outcome when withdrawals are being taken. Poor early returns force selling more shares at low prices, permanently shrinking the base.
Does it matter while accumulating?
No. Without withdrawals, the same set of returns in any order produces the same ending balance. It only bites once money is being taken out.
What is the retirement red zone?
The five years before and after retirement, when the portfolio is largest, withdrawals are starting and there is no earned income. It is the period of maximum vulnerability.
What is the most effective protection?
Flexible spending. A client who can reduce discretionary withdrawals by ten per cent in a bad year has bought substantial protection, more than most allocation changes provide.
Why is the safe withdrawal rate below the expected return?
Because variance around the average does the damage. Sequence risk is precisely the gap between what a portfolio is expected to earn and what it can safely support.