The Sequence of Returns Risk Most Pre-Retirees Have Never Heard Of

Sequence of returns risk describes the devastating impact that the timing — not just the size — of investment losses has on a retirement portfolio. According to Vanguard’s retirement research, two retirees with identical 30-year average returns can experience wildly different outcomes based solely on whether losses hit early or late in retirement.

With the oldest Baby Boomers now in their late 70s and a wave of pre-retirees approaching their exit dates, understanding this risk in 2025 has never been more urgent.

What Exactly Is Sequence of Returns Risk?

Sequence of returns risk is the threat that withdrawing money from a portfolio during a market downturn locks in losses and reduces the capital available to recover. It is fundamentally different from average return risk — the order of returns matters as much as the returns themselves.

Consider two retirees, each starting with $1 million and withdrawing $40,000 per year. Retiree A experiences strong returns in early retirement and poor returns later. Retiree B faces the reverse. Even with an identical average annual return of roughly 5%, Retiree B can exhaust the portfolio years earlier. The math is unforgiving: selling shares at depressed prices permanently removes units that would otherwise compound during the recovery.

This is fundamentally different from the accumulation phase, when market timing matters far less. During accumulation, dollar-cost averaging actually benefits from volatility. In distribution, the opposite is true — you are forced to sell low rather than buy low.

Why Does Sequence Risk Hit Hardest Right at Retirement?

The five years immediately before and after retirement — often called the “retirement red zone” — represent the highest vulnerability window. This is when your portfolio is at its largest balance and when withdrawals begin, creating a toxic combination for sequence risk.

Before retirement, a market crash is painful but recoverable. You stop selling and let the portfolio heal. After retirement, you have no such option. Fixed living expenses force continued withdrawals regardless of market conditions. Each withdrawal during a downturn sells more shares at lower prices, leaving fewer shares to participate in the eventual recovery.

The Math Behind the Damage

Assume a retiree starts with $800,000 and withdraws $32,000 annually (the Social Security Administration estimates many retirees rely on personal savings for 40–60% of income). A 25% market decline in year one forces the sale of roughly 30% more shares to meet the same withdrawal need. Those missing shares are gone permanently — they cannot recover even when the market rebounds.

The Federal Reserve’s Flow of Funds data shows that U.S. households held over $44 trillion in retirement assets as of 2024 — assets overwhelmingly exposed to this sequence risk without most owners realizing it.

How Does Sequence Risk Compare to Other Retirement Threats?

Sequence of returns risk is arguably more dangerous than simple market volatility, inflation risk, or longevity risk on its own — because it can trigger all of them simultaneously. A poorly timed bear market does not just reduce wealth; it can force spending cuts, delay Social Security claiming strategies, and shorten the time a portfolio has to grow.

Notice that standard market volatility is the least dangerous item on that list — for someone still accumulating assets. The moment withdrawals begin, volatility transforms into sequence risk. This is a critical distinction that most financial education misses entirely.

If you are currently starting to save for retirement in your 40s, understanding this transition point is essential to building a strategy that survives it.

What Strategies Actually Reduce Sequence of Returns Risk?

Several evidence-based strategies exist to buffer against sequence of returns risk. No single approach eliminates it entirely, but combining two or three significantly reduces the probability of premature portfolio depletion.

The Cash Buffer Strategy

Maintaining one to three years of living expenses in cash or short-term bonds allows retirees to avoid selling equities during a downturn. This “bucket approach,” popularized by financial planner Harold Evensky, prevents forced selling at market lows. The tradeoff is a modest drag on long-term returns from holding low-yielding cash.

Dynamic Withdrawal Adjustments

Rather than withdrawing a fixed dollar amount annually, dynamic withdrawal strategies reduce spending by 5–10% during down markets. Research from Charles Schwab’s retirement income team shows that even modest spending flexibility during bear markets can extend portfolio longevity by five or more years.

Annuity as a Floor Income Layer

A single premium immediate annuity or deferred income annuity from insurers like MassMutual, Pacific Life, or Principal Financial Group can cover essential expenses regardless of market performance. This eliminates the need to sell equities during downturns to meet basic needs. For a comparison of this approach versus staying fully invested, our article on annuities vs. index funds for retirement provides a detailed breakdown.

Strategic Asset Allocation Glide Path

Gradually reducing equity exposure in the five years before and after retirement — rather than holding a fixed allocation — reduces sequence risk mechanically. Vanguard’s Target Retirement funds and similar products use this approach automatically. The risk is giving up equity upside in strong markets.

Understanding how different investment vehicles behave during drawdown is also essential. Our guide to index funds vs. ETFs for wealth building explains the structural differences that matter during both accumulation and distribution.

How Should Pre-Retirees Prepare Right Now?

Pre-retirees within ten years of their target retirement date should act now to reduce sequence exposure — before the first withdrawal is made. Preparation is far more effective than damage control after a bear market strikes.

The first step is auditing your withdrawal dependency. If more than 70% of your monthly retirement income will come from portfolio withdrawals rather than guaranteed sources like Social Security, a pension, or annuities, your sequence risk is high. The IRS and the Social Security Administration both provide tools to estimate guaranteed income floors at retirement.

The second step is stress-testing your portfolio. Run your numbers against a scenario where the market drops 35% in your first year of retirement. Most online retirement calculators, including those from Fidelity and Vanguard, include Monte Carlo simulation tools for exactly this purpose. If the simulation shows portfolio depletion before age 85 in more than 20% of scenarios, your plan needs adjustments.

Third, avoid the common mistake of treating a 401k rollover as a neutral event. Poor allocation decisions during a rollover can inadvertently increase sequence exposure. Our article on 401k rollover mistakes to avoid covers the most costly errors in detail. Similarly, reviewing whether to pay down your mortgage before retiring can reduce your mandatory withdrawal amount and lower sequence risk — a topic we analyze in depth in our piece on whether to pay off your mortgage before retirement.

Finally, consider delaying Social Security to age 70 if health permits. Each year of delay past full retirement age adds 8% in guaranteed income — a powerful buffer against sequence risk that requires no investment management.

Frequently Asked Questions

What is sequence of returns risk in simple terms?

Sequence of returns risk is the danger that bad investment returns early in retirement can permanently damage your portfolio, even if your long-term average returns look fine. It occurs because withdrawals during a downturn force you to sell assets at depressed prices, leaving fewer shares to recover. The timing of losses matters more than the average loss itself.

How much can sequence of returns risk shorten my retirement?

A severe bear market in the first two to three years of retirement can shorten a portfolio’s lifespan by five to twelve years, depending on the withdrawal rate and the depth of the downturn. A retiree using a 4% withdrawal rate who experiences a 30% loss in year one faces a materially different outcome than the same retiree who experiences that loss in year fifteen. Monte Carlo simulations from providers like Fidelity can quantify the specific risk for your portfolio.

Does sequence of returns risk apply during the accumulation phase?

No — sequence of returns risk primarily applies during the distribution phase, when you are withdrawing money. During accumulation, market downturns can actually benefit you through dollar-cost averaging, since you buy more shares at lower prices. The risk fundamentally shifts when regular withdrawals begin.

What is the best strategy to protect against sequence of returns risk?

The most effective approach combines a cash buffer of one to three years of expenses, a dynamic withdrawal strategy that reduces spending by 5–10% in down markets, and guaranteed income sources like Social Security or annuities that cover essential costs without touching the portfolio. No single strategy eliminates the risk entirely, but combining methods significantly reduces it.

Is a 4% withdrawal rate still safe given sequence risk?

The 4% rule, originally developed by financial planner William Bengen and later validated by the Trinity Study, assumes a 30-year retirement horizon with a balanced portfolio. It has historically survived sequence risk in most scenarios, but it provides no guarantee. In today’s lower-yield environment, many researchers now recommend a 3.3–3.5% initial withdrawal rate for greater safety.

At what age does sequence of returns risk become most dangerous?

Sequence risk is most dangerous in the five years before and the five years after your planned retirement date — sometimes called the retirement red zone. This is when your portfolio is at or near its peak value and when withdrawals begin. Taking steps to buffer sequence risk during this specific window has the highest impact on long-term outcomes.