Two people retire with $500,000 each. Both earn the same average return of 7% over 10 years. Both withdraw $25,000 a year to cover living expenses.
After a decade, one of them has $443,000 left. The other has $613,000.
A $170,000 difference. Same investments. Same returns. Same withdrawals. The only difference was the order the returns came in.
This is called sequence of returns risk, and it's one of the least understood threats to a retirement portfolio. Your financial advisor might mention it once. Your 401(k) statement won't mention it at all. But it can be the difference between a comfortable retirement and running out of money at 78.
What Sequence of Returns Risk Actually Is
Here's the concept in plain English: when you're withdrawing money from a portfolio, losing money early is far more damaging than losing money late.
During your working years, this doesn't apply. If your 401(k) drops 20% in year two, you've got decades for it to recover, and you're still adding money every paycheck. The math works out the same regardless of what order the returns come in.
But in retirement, the math changes completely. You're pulling money out. When the market drops early and you sell shares at low prices to fund your withdrawals, those shares can't participate in the recovery. They're gone. And the remaining balance has to grow from a much smaller base.
The Math: Two Retirees, Same Returns, Different Order
Let me walk through this with real numbers.
Both retirees start with $500,000. Both withdraw $25,000 at the beginning of each year. Both experience the exact same ten annual returns, just in reverse order.
The returns: -20%, -15%, +5%, +15%, +25%, +20%, +10%, +8%, +12%, +10%. That averages out to 7% per year.
Retiree A gets the bad years first
| Year | Return | Year-End Balance |
|---|---|---|
| 1 | -20% | $380,000 |
| 2 | -15% | $301,750 |
| 3 | +5% | $290,588 |
| 4 | +15% | $305,426 |
| 5 | +25% | $350,533 |
| 6 | +20% | $390,640 |
| 7 | +10% | $402,204 |
| 8 | +8% | $407,380 |
| 9 | +12% | $428,265 |
| 10 | +10% | $443,592 |
Retiree B gets the good years first
| Year | Return | Year-End Balance |
|---|---|---|
| 1 | +10% | $522,500 |
| 2 | +12% | $557,200 |
| 3 | +8% | $574,776 |
| 4 | +10% | $604,754 |
| 5 | +20% | $695,705 |
| 6 | +25% | $838,381 |
| 7 | +15% | $935,388 |
| 8 | +5% | $955,907 |
| 9 | -15% | $791,271 |
| 10 | -20% | $613,017 |
Same returns. Same withdrawals. $170,000 difference.
And here's what makes it worse: without any withdrawals at all, both portfolios would end at exactly $901,330. The order wouldn't matter. It only matters because they're taking money out.
The Red Zone
Retirement researchers call the five years before and the five years after your retirement date the "retirement red zone." This is when sequence risk hits hardest, because your portfolio is at its largest (so percentage losses translate to the biggest dollar amounts) and you're starting to draw it down.
A 30% market drop when you have $800,000 and are pulling $40,000 a year is devastating. That same 30% drop when you have $200,000 and are adding $20,000 a year is a buying opportunity. Same percentage, completely different impact depending on where you are in life.
What You Can Actually Do About It
Most advice about sequence risk boils down to "lower your withdrawal rate" or "keep a cash buffer." Those help, but they don't solve the underlying problem: your income still depends on selling assets in a market you can't control.
The more useful question is whether you can structure some of your retirement income so it doesn't depend on selling shares at all.
There are a few ways to approach this.
Social Security is the obvious one. It pays the same amount regardless of what the S&P 500 does. Delaying it to increase your monthly benefit is one of the best hedges against sequence risk you can make.
Dividend-paying stocks generate income without requiring you to sell shares, though dividends can be cut during downturns.
Bonds and CDs provide fixed payments, though at current rates you're trading a lot of growth for stability.
And then there's private real estate lending, where you lend capital secured by a property and receive fixed monthly payments on a set schedule. Your payments come in whether the Dow is up 20% or down 30%. A lot of people approaching retirement have never heard of it, which is partly why I started writing about it.
The point isn't that any single approach is the answer. It's that building income streams that don't all depend on the same market reduces the chance that a bad sequence wrecks your plan.
Average Returns Are Misleading
Two portfolios can earn the same average return over the same time period and end up in completely different places. The difference is the order the returns come in, combined with the fact that you're pulling money out along the way.
If you're within 10 years of retirement in either direction, this matters more than finding the next stock to buy. Build your plan around income that shows up regardless of what the market does in any given year.