Ask most investors what the biggest risk in retirement is, and they'll say running out of money. That's correct — but the mechanism through which most people run out of money is poorly understood. It's not just about how much you spend. It's about when the market drops in relation to when you start withdrawing.
This concept is called sequence of returns risk, and for anyone near or in retirement, it is one of the most important ideas in all of personal finance.
What Is Sequence of Returns Risk?
Sequence of returns risk refers to the danger that the timing of investment returns — not just the average return — can dramatically affect how long your portfolio lasts.
During the accumulation phase — when you're saving and investing — the sequence of returns doesn't matter much. Whether you get good years early or late, the math works out similarly over long periods. But the moment you start taking withdrawals, everything changes.
The Core Problem
When you withdraw money from a declining portfolio, you're selling shares at depressed prices. Those shares are gone — they cannot participate in the recovery. The more shares you're forced to sell at the bottom, the less capital you have available when markets eventually rebound. This creates a permanent impairment that compounds over time, and it cannot be recovered simply by waiting for markets to go back up.
A Tale of Two Retirements
Consider two hypothetical retirees — both starting with $1,000,000, both withdrawing $50,000 per year, and both experiencing the same average annual return of 6% over 25 years. The only difference: the order in which those returns arrive.
| Scenario | First 5 Yrs | Middle | Final Yrs | Year 25 Balance |
|---|---|---|---|---|
| Retiree A — Lucky | +15% avg | +6% avg | −5% avg | $892,000 |
| Retiree B — Unlucky | −5% avg | +6% avg | +15% avg | $0 — runs out yr 18 |
Retiree A — Lucky Sequence
Retiree B — Unlucky Sequence
Same average return. Same withdrawal amount. Retiree A ends with nearly $900,000. Retiree B runs out of money entirely — seven years early. The only variable was the sequence in which those returns arrived.
Why the Early Years Are Everything
The early years of retirement are disproportionately important for two reasons:
- The portfolio is at its largest. A percentage loss in year one affects far more dollars than the same percentage loss in year fifteen, when withdrawals have already reduced the portfolio.
- You're selling shares to fund withdrawals. In a declining market, every dollar you withdraw requires selling more shares. Those shares, once sold, cannot recover with the market.
Conversely, strong early returns provide a cushion that can sustain withdrawals through later downturns. The mathematics are deeply asymmetric — early losses are far more damaging than late losses of equal magnitude.
"Getting bad returns early in retirement and good returns later is far worse than the reverse — even if the averages look the same."
The Historical Reality
This is not a theoretical concern. Consider a retiree who began withdrawing from an S&P 500 index fund in January 2000. Over the next three years, they experienced losses of approximately 49%. Their portfolio was simultaneously declining and being drawn down for living expenses. Even though markets eventually recovered and went on to produce solid returns through 2010, many of these retirees ran severely short of what projections had indicated.
The same pattern — though compressed into a shorter period — occurred for anyone who retired in 2007 and began withdrawals heading into the 2008-2009 financial crisis.
Strategies for Managing Sequence Risk
There is no way to eliminate sequence of returns risk entirely, but there are meaningful ways to manage it:
Maintain Portfolio Flexibility
Having a cash or short-term reserve equal to one to two years of withdrawals means you don't have to sell equities during sharp downturns. You draw from the reserve while waiting for markets to recover.
Active Drawdown Management
A tactically managed portfolio that reduces equity exposure during deteriorating market conditions can significantly reduce the depth of early-retirement losses — directly addressing the core mechanism of sequence risk.
Variable Withdrawal Strategies
Rather than a fixed inflation-adjusted withdrawal, some retirees benefit from spending guardrails — reducing withdrawals modestly during down years and increasing them during strong years. This preserves capital during adverse sequences.
Optimize Social Security Timing
Delaying Social Security — even by a few years — increases your guaranteed lifetime income, reducing the amount you need to withdraw from your portfolio in vulnerable early retirement years.
The Bottom Line
Sequence of returns risk is the single most compelling argument for active risk management in retirement portfolios. The long-run average return of a portfolio matters less than what happens in the critical early years of retirement. A portfolio that limits early losses — even at the cost of some upside in strong markets — gives retirees the most durable foundation for a financially secure retirement.
Next in This Series
Our next article tackles the Social Security claiming decision — one of the most impactful and often misunderstood choices retirees face, with a direct connection to managing sequence of returns risk.