The 4% Rule Stress Test uses the same ten annual returns in reverse order so you can see how withdrawals make timing matter.
Sequence-of-returns risk is the risk that poor returns arrive early while you are withdrawing money. Two retirees can experience the same set of annual returns and the same average return but finish with very different portfolios because withdrawals lock in losses and reduce the capital available for a later recovery.
The risk appears when withdrawals and market losses happen together.
Before retirement, a market decline can be uncomfortable but new contributions may continue buying assets. During retirement, withdrawals remove assets from the portfolio. If large losses arrive early, more of the remaining portfolio may be required to fund the same spending, leaving less capital available for a later recovery.
Two return paths can use the same returns and still end differently
The simplified example below starts with 100 units, applies the year's return, then withdraws 5 units at year-end. Both paths contain exactly the same six annual returns, only in a different order.
| Year | Early losses first | Early gains first |
|---|---|---|
| Start | 100.00 | 100.00 |
| 1 | 75.00 | 105.00 |
| 2 | 62.50 | 108.40 |
| 3 | 66.88 | 116.41 |
| 4 | 69.90 | 128.87 |
| 5 | 70.49 | 110.98 |
| 6 | 72.54 | 83.79 |
The same set of returns produced different ending balances because withdrawals occurred along the way. This is the essence of sequence-of-returns risk. The numbers are illustrative and exclude inflation, tax, fees and changing spending.
Why the first years of retirement receive so much attention
NISM identifies sequence-of-returns risk, longevity risk and inflation risk as major retirement risks. Early losses can be especially damaging because the portfolio is usually near its largest absolute value and withdrawals have just begun.
What can a planning model do?
- Test lower return assumptions rather than relying on one optimistic rate.
- Model a longer retirement horizon and inflation explicitly.
- Keep near-term spending needs separate from long-horizon growth assumptions.
- Consider how flexible discretionary spending would be after a poor market period.
- Revisit the plan rather than assuming a fixed withdrawal rule remains appropriate forever.
Why return order barely matters without withdrawals—and matters greatly with them
If no money enters or leaves a portfolio, multiplying the same annual returns in a different order produces the same ending value. Withdrawals break that symmetry. A loss early in retirement occurs on a large balance and is followed by a withdrawal; recovery then happens on fewer invested units.
| Year | Strong returns first — ending balance | Weak returns first — ending balance |
|---|---|---|
| 1 | $1.16 million | $1.04 million |
| 2 | $1.29 million | $790,400 |
| 3 | $1.38 million | $628,600 |
| 4 | $1.4 million | $520,700 |
| 5 | $1.36 million | $447,900 |
| 6 | $1.24 million | $399,200 |
| 7 | $1.06 million | $368,600 |
| 8 | $852,200 | $352,800 |
| 9 | $627,000 | $351,000 |
| 10 | $620,300 | $364,200 |
The first retirement decade is a risk zone
NISM describes the first five to ten retirement years as particularly important because losses combined with withdrawals can permanently reduce principal. Morningstar’s forward-looking retirement research similarly finds that poor early returns materially worsen depletion risk when spending is not adjusted.
Sequence risk is not solved by chasing a higher average return
Increasing equity exposure can improve long-run expected growth, but it can also increase the size of early losses. The goal is not to maximize the spreadsheet’s average return; it is to create a withdrawal system resilient enough to survive bad paths.
Common tools for managing the risk
| Tool | How it helps | Trade-off |
|---|---|---|
| Cash/liquidity reserve | Can fund spending without selling risky assets immediately after a decline | Too much cash can reduce long-term growth and purchasing power |
| Balanced allocation | Spreads risk across assets with different behavior | Diversification cannot eliminate losses |
| Dynamic spending/guardrails | Cuts or delays flexible withdrawals after poor returns | Income becomes less predictable |
| Bond ladder or liability matching | Aligns some future cash flows with known expenses | May reduce growth or require reinvestment decisions |
| Later retirement or part-time income | Reduces withdrawals and/or shortens horizon | May not be feasible or desired |
Watch the current withdrawal rate after a drawdown
A $40,000 withdrawal on a $1 million portfolio is 4%. If the portfolio falls to $750,000 while spending rises with inflation, the same lifestyle can represent a much higher percentage of the remaining assets. Monitoring that ratio can reveal when the plan needs review.
A retirement plan should specify what happens after a bad year
- Which spending is essential and cannot be cut?
- Which travel, gifting, upgrades or large purchases could be delayed?
- How many months or years of planned withdrawals are held in stable liquid assets?
- At what portfolio or withdrawal-rate threshold will the plan be reviewed?
- What income sources could temporarily reduce portfolio withdrawals?
Sequence risk is “reverse cost averaging”
During accumulation, a fixed contribution buys more units after a price decline. During decumulation, a fixed cash withdrawal sells more units after a price decline. That is why the same volatility that can benefit a long-term saver can damage a retiree. The mechanism is mechanical, not emotional.
Guardrails convert risk into a pre-agreed decision
Instead of deciding in panic after a bear market, a plan can specify that discretionary spending is frozen or reduced if the current withdrawal rate rises above a threshold, and can allow raises after strong markets. The exact guardrails require individualized design, but the principle is powerful: Decide how to react before the stress arrives.
The bridge from work to retirement is especially sensitive
The final working years and first retirement years combine large portfolio balances with the transition from contributions to withdrawals. A flexible retirement date, part-time income or cash reserve can be disproportionately valuable in that window because it reduces forced selling after an early shock.
Worked example: The same five returns, reversed
Start with 10,000,000 and withdraw 500,000 at the beginning of each year. Now use the same five annual returns in opposite orders.
| Path | Return order | Illustrative balance after year 5 |
|---|---|---|
| Weak returns first | −20%, −10%, +10%, +20%, +30% | About 8,677,240 |
| Strong returns first | +30%, +20%, +10%, −10%, −20% | About 10,106,240 |
The five returns are identical; only their order changed. Early losses hurt more in the first path because withdrawals remove capital when prices are already depressed. Without withdrawals, reversing the same sequence would not create the same kind of gap.
Checklist: Build a response before a weak early market arrives
- Separate essential spending from spending that could temporarily fall.
- Decide how much readily available cash or short-term liquidity is appropriate for the plan.
- Review asset allocation rather than chasing the highest average return.
- Test a longer retirement horizon and higher inflation.
- Write down what would trigger a spending adjustment after a large drawdown.
- Stress-test return order instead of relying only on one smooth average-return projection.
Use the 4% Rule Stress Test to compare weak-first and strong-first paths, or the Withdrawal / Drawdown Calculator to test a retirement runway.
Frequently asked questions
Does sequence risk matter while I am still saving?
Much less when there are no withdrawals, and recurring contributions can even buy more assets after declines. The risk becomes most acute when large withdrawals begin.
Can a cash bucket eliminate sequence risk?
No. It can reduce forced selling during a downturn, but cash has inflation and opportunity costs and the risky portfolio can still decline.
Why not just hold more stocks for a higher expected return?
Expected return is only one dimension. A more volatile portfolio can experience a deeper early loss, which may worsen the interaction with withdrawals.
What is the most practical defense?
There is no single defense. A diversified allocation, liquidity, flexible spending and periodic review work together better than relying on one forecast.
Sources and how this guide was prepared
This Carrowmont guide was drafted with AI assistance, then structured and checked against the cited external sources and Carrowmont calculation conventions. Worked examples are illustrative, use simplified assumptions, and are not forecasts or individualized recommendations.