Sequence of Returns Risk in Retirement
What these dates mean
Published is the original release. Updated records a material content change. Reviewed records the latest documented factual or editorial review; it does not mean personalized professional advice.
Two retirees, identical returns, identical average — one just meets the bad decade first. Why that alone decides whether the money lasts.
Averages lie in retirement. Two people can earn the identical set of returns over thirty years — same numbers, same average — and one runs out of money while the other dies rich. The only difference is the order. This spoke lives under the Retirement hub.
Most articles assert this. Here is the proof, and you can reproduce it yourself in the sequence-risk tool.
The proof: same returns, opposite order
Take two retirees, each starting with $1,000,000. Both live through ten years returning −3% and twenty years returning +8%. Same thirty returns, same arithmetic mean of 4.3%. The only difference: one meets the bad decade first.
| Bad decade first | Good decade first | |
|---|---|---|
| Average annual return | 4.3% | 4.3% |
| Balance after 10 years, no withdrawals | $737,424 | $2,158,925 |
| Balance after 30 years, no withdrawals | $3,437,102 | $3,437,102 |
| Balance after 30 years, withdrawing 4% | $0 — ran out in year 18 | $909,828 |
An illustration, not a forecast: a stylised bad decade and good period rather than real market history, with a first-year withdrawal of $40,000 rising 3% a year, before taxes and fees.
Read the middle two rows first, because they are the part nobody shows you.
With no withdrawals, the two portfolios end at exactly the same number. Not approximately — exactly. Multiplication is commutative, so the order of the returns cannot possibly matter. Ten years in, one investor is more than a million dollars behind the other, and it turns out to be an illusion: by year thirty it has vanished completely. If you are still saving, sequence risk is not your problem.
Now add withdrawals, and the same two return sequences diverge permanently. One retiree ends with nothing, twelve years early. The other ends with the better part of a million dollars. Nothing separates them but timing — the one thing neither of them controls.
That is sequence-of-returns risk, in one table. Set the withdrawal rate to zero in the tool and watch the two lines land on the same point; raise it and watch them tear apart.
Why selling into a downturn is permanent
A paper loss is not a loss. It is a price you have chosen not to accept. Leave the shares alone and a recovery undoes it.
A withdrawal converts that choice into a fact. To fund $40,000 of spending from a portfolio that has fallen 30%, you must sell roughly 43% more shares than you would have sold before the fall. Those shares are gone. They do not come back when the market does, and every future year's growth compounds on a base that is now permanently smaller.
This is the entire mechanism. Sequence risk is not really about markets — it is about the interaction between markets and selling. Remove the selling and it disappears.
Why the first decade outweighs the twenty after it
Two reasons, and they compound each other.
- The base is at its biggest. A 30% fall in year 2 acts on your entire nest egg. The same fall in year 25 acts on whatever is left after two decades of withdrawals.
- There are more withdrawal-years left to fund. A shrunken portfolio in year 2 has to survive twenty-eight more years of rising withdrawals. In year 25 it has five.
That asymmetry is why planners talk about the retirement risk zone — roughly the five years either side of the day you stop earning. It is the only period in your financial life when a bad market and a fixed spending requirement collide with a full-sized balance.
What actually helps, and what each one costs
Nothing on this list requires predicting anything. Every one of them costs something, and the honest version says so.
| Defence | What it does | What it costs |
|---|---|---|
| Cash or bond buffer (1–3 years of spending) | Lets you spend from cash instead of selling stocks in a downturn | Cash lags the portfolio over long horizons — this is insurance with a premium |
| Flexible / guardrail spending | The single strongest lever: cut withdrawals after a bad year and you sell fewer shares cheap | You must actually be willing to cut, in the year it feels worst |
| Bond tent or rising equity glidepath | Holds more bonds through the risk zone, then eases back into equities | Lower expected growth exactly when the portfolio is largest |
| Part-time income in the early years | Every dollar earned is a dollar not sold. Works precisely when it matters most | You are still working, at least partly |
| Delaying Social Security | Buys an inflation-adjusted, market-proof income floor for life; 2026's COLA was 2.8% | You bridge the gap from the portfolio — spending more early to spend less later |
Note the tension in that last row. Delaying to age 70 means larger portfolio withdrawals in exactly the years sequence risk is worst. It is still usually the right trade, because it converts market-dependent income into guaranteed income for the rest of your life — but it is a trade, not a free win. See Social Security timing.
The buffer and the flexibility work together: the buffer buys you time to be flexible, and flexibility is what refills the buffer. Neither is much use alone. The mechanics of running both are in the withdrawal plan.
When the order is not your problem
There is a failure mode worth naming, because it looks like sequence risk and is not. Push the withdrawal rate high enough in the tool and both portfolios run dry — the lucky one merely lasts a few years longer. When that happens, the order is not what is killing the plan. The rate is.
This is the diagnostic that matters. If the good sequence survives and the bad one does not, you have a sequence problem, and buffers, flexibility and glidepaths are the answer. If neither sequence survives, you have an arithmetic problem, and no amount of good luck early on fixes it — you need a lower starting withdrawal, a bigger portfolio, more guaranteed income, or a shorter horizon. Confusing the two leads people to buy insurance against the wrong risk.
It also cuts the other way. If both sequences survive comfortably, you may be spending less than you could, and the cash buffer you are holding is costing you real return for a risk you do not run.
What does not help
- Trying to time the market. If you could reliably see the bad decade coming, sequence risk would not exist. Getting out is a second bet stacked on the first, and it requires being right twice — once on the way out, once on the way back in.
- Chasing returns. A higher-expected-return portfolio has a wider distribution of outcomes. In the accumulation phase that is a fair trade. In the withdrawal phase, more variance in the first decade is more of the exact thing that hurts you.
- Averaging the safe-withdrawal-rate research into one number. Morningstar's forward-looking figure is 3.9%; Bengen's revised historical worst case is 4.7%. They are not a range and they are not two guesses at the same quantity — one is a Monte Carlo run at 90% success with a conservative equity weight, the other is the worst outcome US history actually delivered to a more aggressive portfolio. Splitting the difference produces a number that answers no question at all. The 4% rule page explains why they disagree.
Key takeaways
- With no withdrawals, the order of returns is irrelevant — both orders end at exactly the same balance. Withdrawals are what make the order matter.
- Selling into a downturn converts a paper loss into a permanent one and shrinks the base that has to recover.
- The first decade of retirement carries far more weight than the twenty years after it: the balance is largest and the remaining withdrawals are most numerous.
- Defend structurally — buffer, flexibility, glidepath, part-time income, a guaranteed income floor. Do not defend by forecasting.
- Flexibility is the strongest lever, and the static withdrawal rate is essentially the price of refusing to use it.
Educational only — not financial advice. Reproduce the table above in the sequence-risk tool, then build the spending rules in the withdrawal plan.
FAQ
What is sequence-of-returns risk?
It is the risk that the order of your investment returns, not their average, decides whether your money lasts. Two retirees can earn exactly the same returns over thirty years and end up in completely different places, purely because one met the bad years first while withdrawing.
Why does the order of returns matter when I am withdrawing but not when I am saving?
Compounding is commutative: multiply the same set of returns in any order and you get the same result. Withdrawals break that symmetry. Money you take out during a downturn is sold at low prices and never participates in the recovery — so a bad early decade permanently shrinks the base that has to grow back.
Does sequence risk go away later in retirement?
It fades. A crash in year 25 hits a portfolio that has already done most of its compounding and has few withdrawal years left to fund. The same crash in year 2 hits your full balance and is followed by twenty-eight more years of withdrawals from the smaller base. The first decade carries the most weight.
What is the single most effective defence against sequence risk?
Flexible spending. Trimming withdrawals after a bad year directly reduces the shares you must sell at low prices. It costs you nothing up front, unlike a cash buffer or a bond-heavy allocation, which pay for safety with expected return. The cost is that you must actually be willing to cut.
Does a cash buffer really help, or is it just cash drag?
Both are true. Holding one to three years of spending in cash or short bonds means a downturn does not force a sale — that is real protection. It also earns less than the portfolio over long horizons, so it is insurance you pay a premium for. That is a trade-off to make deliberately, not a free lunch.
Can I avoid sequence risk by getting out before a crash?
No. Market timing is not a mitigation — it is a second bet layered on the first. Sequence risk is blunted structurally: buffers, flexibility, glidepaths, part-time income, and guaranteed income floors. Nothing on that list requires predicting anything.
How much can I safely withdraw given sequence risk?
Credible research disagrees, and the disagreement is the honest answer. Morningstar's forward-looking figure is about 3.9% for a rigid inflation-adjusted paycheck at 90% confidence; Bengen's revised historical worst case, with a more aggressive portfolio, is about 4.7%. They answer different questions, and they must never be averaged into a single number.
Sources and notes
- Retirement Savings: Choosing a Withdrawal Rate That Is SustainableAAII Journal · Accessed 2026-07-11The Trinity study. Used for the historical withdrawal-rate context and the finding that success depends on the path, not just the average.
- What's a Safe Retirement Withdrawal Rate in 2026?Morningstar, State of Retirement Income (2025 edition) · Accessed 2026-07-11Source of the 3.9% forward-looking starting rate (30 years, 90% success, 30–50% equity), and of the contrast with Bengen's historical 4.7%.
- Your Retirement Benefit: How It's Determined (Pub. 05-10070)Social Security Administration · Accessed 2026-07-11Delayed claiming raises the benefit for life, and benefits are adjusted annually for inflation — the basis for treating Social Security as a market-proof income floor.