Picture two travellers on the same road, each carrying a full pack of supplies. One meets the storm on day one, when the pack is heavy and every step burns food. The other meets it on the final day, when the pack is already light. Same road, same weather, very different journeys. Your retirement portfolio works the same way, and the storm is a bear market.
This guide shows the math behind the effect, why the first years of retirement carry the most weight, and five practical defences. You will also find a comparison table, the real market years that caused trouble, and the mistakes that quietly wreck withdrawal plans.
Morningstar's explainer on how the order of returns can be your friend or your foe (captured 9 October 2026).
What Is Sequence of Returns Risk?
Sequence of returns risk is the danger that the order of your investment returns, not just their average, decides whether your money lasts. It only matters when cash is moving in or out of the portfolio. If you invest a lump sum and never touch it, order is irrelevant, because multiplying the same growth factors gives the same answer in any order.
Once you start withdrawing, order matters a great deal. A withdrawal taken after a loss sells more shares at depressed prices. Those shares are gone when the recovery arrives, so the portfolio climbs back from a smaller base. Some researchers argue this is really sequence-of-withdrawals risk, because the cash flow is what turns a temporary loss into a permanent one.
A simple way to remember it: average returns tell you where you end up if you leave the money alone, while the sequence tells you what happens when you take money out along the way. Savers who add money regularly experience the mirror image, which is why early losses can actually help during the accumulation years, the logic behind dollar cost averaging.
Three ingredients create the risk: a portfolio exposed to volatile assets, regular withdrawals, and a poor stretch of returns early in the withdrawal period. Remove any one of them and the problem shrinks sharply.
Why Sequence of Returns Risk Matters
The years just before and after your retirement date are often called the retirement risk zone. Your portfolio is usually at its largest, and you have the longest run of future withdrawals ahead of you. A bad start therefore does the most damage, while a bad market in year 25 matters far less.
-37.6% cumulative S&P 500 total return across 2000, 2001 and 2002, three straight losing years of -9.1%, -11.9% and -22.1%.
A retiree who began drawing income in 2000 walked straight into that sequence, and then met another drop of 37.0% in 2008 on a smaller portfolio. Someone who retired five years earlier had banked years of gains before the same storms arrived. Their long-run average return can look almost identical, yet their outcomes diverge sharply.
The well-known 4% guideline exists because of this problem. William Bengen's 1994 study in the Journal of Financial Planning tested historical retirement start dates and found that the worst case, retirees who began around 1966, set the safe starting withdrawal rate near 4% of the initial portfolio, adjusted for inflation. The later Trinity study (1998) reached similar results for stock and bond mixes over 30 years. The rule is built around surviving the worst start, not the average one.
Bad starts are also not completely random. Michael Kitces has shown that periods of high market valuations have tended to be followed by weaker decades, which is one reason many planners adjust the opening withdrawal rate to market conditions rather than treating 4% as a law. You can read his full analysis of sequence of return risk, first published on 1 October 2014.
A retirement provider's guide, updated 30 June 2026, on how early losses create a lasting impact (captured 9 October 2026).
How to Defend Against Sequence of Returns Risk
You cannot control the order of returns, but you can control how exposed your income is to them. The five steps below build on each other, so start with the test and work down.
Step 1: Stress-test your plan with a bad-start sequence
Take your planned portfolio, starting withdrawal and inflation assumption, then run the same set of returns twice: once in a bad-first order and once reversed. If the bad-first run falls short of your goal, your plan relies on luck. The table below uses ten annual returns of -22%, -12%, +5%, +10%, +14%, +18%, +8%, +12%, +16% and +20%, a $1,000,000 start, and a $40,000 withdrawal at the start of year one that rises 3% a year.
Same ten returns, opposite order (balance at the end of each year)
Both orders share the same 6.03% annualised return. The model is an illustration built for this article, not a forecast.
$393,678 gap after ten years caused only by the order of returns.
Step 2: Use a flexible withdrawal rule
A fixed inflation-adjusted paycheque is the most fragile design. Flexible rules, sometimes called guardrails, let spending flex with the market. Even a small tweak helps. In the same model, freezing your withdrawal at $40,000 for the first three years (skipping the inflation raise after the crash) lifts the year-10 balance from $924,698 to $967,890, a gain of $43,192.
Step 3: Hold a cash and short-term bond buffer
Keep one to three years of planned withdrawals in cash or short-duration bonds. When stocks fall, you spend from the buffer instead of selling equities at a loss, then refill it after markets recover. Remember that bonds are not risk free: read how bond duration affects prices when rates rise before you pick the buffer holdings.
Step 4: Set your asset allocation with drawdowns in mind
A portfolio that can fall 40% is a very different tool from one that can fall 20%. Check each holding's worst historical loss with maximum drawdown and compare how much return you earn per unit of pain using the Calmar ratio. Our guide to asset allocation and portfolio risk walks through how to balance the mix.
Step 5: Build a rising equity glide path
Some planners reduce stock exposure before retirement and then let it climb gradually over the first ten years. The idea is to hold the least risk when the damage from a crash would be largest. Research on this approach is mixed, so test it against your own bad-start run from Step 1 rather than assuming it works.
The table below summarises the five defences and what each one costs you.
Defence comparison
Real Examples of Sequence of Returns Risk
History gives us clean case studies. The S&P 500 total return fell in 2000, 2001 and 2002, rebounded, then fell 37.0% in 2008 before gaining 26.5% in 2009. In 2022 the index lost 18.1%, then gained 26.3% in 2023. A retiree who started withdrawals just before any of these drops sold shares at low prices, while a retiree who started just after the drop sold into the recovery.
Selected S&P 500 total return years
The fix is rarely to avoid stocks entirely. Morningstar's August 2021 explainer on the topic frames the order of returns as something that can be your friend or your foe, which is why the defences above focus on flexibility and diversification rather than prediction. You can use an AI assistant to run these what-if tests quickly, as shown in our retirement planning guide for Claude AI.
Capital Group's article questions whether this is really sequence-of-withdrawals risk (captured 9 October 2026).
Common Mistakes to Avoid
Mistake 1: Planning on the average return
A plan that assumes a smooth 6% or 7% every year ignores the whole issue. In the table above both retirees averaged 6.03% a year, yet one ended almost 43% richer. Always test a bad-first sequence.
Mistake 2: Treating 4% as a guarantee
The 4% guideline came from specific historical data for specific portfolios over 30 years. A longer retirement, higher valuations or higher fees can all push the safe rate lower. Treat it as a starting point, not a promise.
Mistake 3: Selling everything after the crash
Panic selling locks in the loss and removes you from the recovery. The 2009 rebound of 26.5% rewarded only investors who still held shares. A written rule for what you will do in a bear market protects you from your own worst instincts.
Mistake 4: Hoarding too much cash
A buffer of one to three years helps, but ten years of cash exposes you to inflation risk and may leave your plan short in the opposite direction. Keep the buffer sized to the job. Your regular emergency fund is a separate pool and should not double as retirement income.
Mistake 5: Ignoring part-time income and timing flexibility
Retirement dates and spending are often more flexible than people admit. Delaying retirement by a year, taking part-time work during a downturn, or postponing a big purchase can do more for your plan than any asset allocation tweak.
Frequently Asked Questions
What is sequence of returns risk in simple terms?
It is the risk that poor investment returns arrive early in retirement, when you are also withdrawing money. The same set of returns can leave you with very different balances depending on the order, as the table in this guide shows.
How do you reduce sequence of returns risk?
Use flexible withdrawals, hold one to three years of spending in cash or short-term bonds, match your stock exposure to the drawdown you can tolerate, and stress-test your plan against a bad start. Combining two or three of these works better than relying on one.
Does sequence of returns risk matter if I am still working?
Not in the same way. While you add money, early losses let you buy more shares cheaply. The risk becomes dangerous once you switch from contributing to withdrawing, so it matters most from about five years before to ten years after your retirement date.
Is a 4% withdrawal rate safe?
It was the highest rate that survived every historical 30-year start date in Bengen's data. It is not a guarantee, and it may be too high or too low depending on your retirement length, fees and market valuations. Run your own bad-start test.
Can bonds fully protect against sequence of returns risk?
No. Bonds usually cushion stock losses, but in 2022 both stocks and bonds fell together. A diversified mix plus a cash buffer is more resilient than relying on bonds alone.
Key Takeaways
- Order matters once you withdraw. Identical returns in a different order produced $924,698 versus $1,318,376 in our ten-year example.
- The danger zone is the first decade. Early losses on your largest balance are the hardest to recover from.
- Flexibility beats precision. Freezing a single inflation raise after a crash added $43,192 in the model.
- A short-term buffer buys time. One to three years of spending in cash or short bonds avoids selling stocks at lows.
- Test, do not guess. Run a bad-first sequence on your own numbers before you rely on any rule of thumb.
- Remember the pack. The storm hurts most when the pack is full and you are already unloading it, so lighten the load early.
What to Watch Next
- > Do your current withdrawals stay under your planned rate if stocks fall 20% this year?
- > Is your buffer still covering at least one year of spending after any recent top-up?
- > Do market valuations sit above their long-term average, which has often preceded weaker decades?
- > Has inflation moved enough to change next year's planned withdrawal?
This article is general education and is not personal financial advice. Consider speaking with a licensed adviser in your country before changing a retirement plan.