Sequence-of-Returns Risk: Why the First Five Years of Retirement Matter More Than the Next Twenty

When you are saving for retirement, the order in which markets go up and down barely matters. Good year, bad year, good year, bad year — over thirty years, the contributions and the average return do most of the work, and the path is mostly noise.

The day you retire, that math reverses. Withdrawals replace contributions. The order of returns suddenly matters as much as the average. This is sequence-of-returns risk, and it is the single biggest reason that two retirees who looked identical at age 65 can end up in very different financial situations at age 80.

A Simple Way to See It

Imagine two retirees, both starting with $1 million, both withdrawing $50,000 a year (adjusted upward each year for inflation), both earning a 6% average annual return over a 30-year retirement.

The first retiree experiences strong markets in years one through ten and weak markets in years twenty-one through thirty.

The second retiree gets the opposite — weak markets early, strong markets late.

Same average return. Same withdrawals. Same time horizon. The first retiree dies with substantial money left over. The second retiree, in many realistic scenarios, runs out before age 90.

The reason: when you withdraw from a portfolio that just dropped 25%, you are locking in losses that compounding can no longer fully repair, because each withdrawal is a larger percentage of a now-smaller base. Bad early returns plus withdrawals is a mathematically harsher combination than bad late returns.

Why "The First Five Years" Specifically

Academic and industry research has consistently shown that the worst-case retirement scenarios are clustered around poor returns in roughly the first five to ten years after retirement begins. After that window, the portfolio has either survived a stress test, or it has been quietly damaged in a way that gets harder to recover from with each passing year.

This is why the first five years deserve a different plan than the next twenty.

Three Practical Defenses

You cannot control when a bad market arrives. You can control how exposed your withdrawals are to one.

A cash and short-bond buffer. Most plans hold one to three years of essential expenses in cash, T-bills, or short-duration bonds. The point is not yield. The point is to never be forced to sell stocks during a drawdown to fund next month's groceries. The buffer breaks the link between market timing and spending.
Flexible spending in non-essentials. Plans that distinguish between "must-spend" (housing, food, healthcare, insurance) and "want-to-spend" (travel, gifts, discretionary) hold up dramatically better. Cutting discretionary spending modestly in a down year preserves enormous portfolio value on a 30-year horizon.
A planned glide path on equity exposure. Some research suggests starting retirement with a slightly lower equity allocation and increasing it through the first decade — the opposite of what most people do. Whether or not you implement that exactly, the principle holds: the first years of retirement are when concentration in volatile assets has the highest cost.

What Gets Misread as Sequence-of-Returns Risk

Two things get blamed on sequence risk that are actually different problems:

Spending too much. No portfolio strategy survives a 6%+ withdrawal rate in a moderate-return environment. If the rate is too high, the path was always going to be hard.
No flexibility built into the plan. A plan that requires constant withdrawals in real terms regardless of conditions removes the most important defensive lever you have.

Sequence-of-returns risk is real. So is the risk of confusing other planning errors for it.

What to Do This Week

Look at your current portfolio and ask: if markets dropped 30% the day after I retired and stayed there for two years, where would my first 24 months of spending come from? If the answer is "I would sell stocks at the bottom," that is the problem to solve before retirement, not after. The cleanest fix is usually a buffer of one to three years of essential expenses sitting in cash or short bonds, set up before you need it.

A retirement plan is built to survive bad timing, not just average outcomes. The first five years are the test.

The information provided is for educational purposes only and does not constitute investment, legal, or tax advice. Consult with qualified professionals for guidance specific to your situation.