Sequence of returns risk is the chance that bad market years hit while you are withdrawing for living expenses, not while you are still adding from a paycheck. Same long-run average return can still fail if the ugly years cluster at the start of retirement.
Early retirees feel this hardest: you stop earning, start pulling from investments, and the order of the storms matters as much as the average weather over thirty years. This is for anyone with a target stop-work year who has only tested happy-path charts.
You will see why two portfolios with the same average return can end in different places when withdrawals start, and how to stress the first decade without a PhD.
While you are working, a down year is annoying. You might buy fewer shares with the same contribution, or you pause extra investing until the bonus lands. Your salary still covers rent on the 1st. The portfolio can recover because you are not selling shares to buy groceries.
After work stops, the script flips. You sell assets to fund spending. If year one is down 20%, you withdraw the same dollars from a smaller pile. Those shares are gone. They do not get to ride the rebound. Year two down again and the hole deepens. Later sunny decades cannot fully undo early damage if withdrawals never pause.
Toy example: $1 million portfolio, $40,000 withdrawals (4%), two different five-year return sequences that both average about 6% per year. Path A: +10%, +8%, +6%, +4%, +2%. Path B: -15%, -8%, +5%, +12%, +18%. Path A leaves you near $1.05 million after five years of withdrawals in this simplified sketch. Path B can land closer to $820,000 because the early storms forced sales at low prices. Same average. Different order. Different outcome.
That is sequence risk in plain terms. Not prediction. A reminder that the first five to ten years after paychecks stop deserve harder testing than the middle of a forty-year accumulation phase.
Portfolio after withdrawals (illustrative $1M start)
Back-of-napkin math for a stop-work year: you need spending covered every January whether markets cooperate. Flexibility helps. Spend a little less in bad years, pick up part-time income for two years, or delay large trips until balances heal. A plan that assumes fixed $80,000 spend and zero earned income through a 2008-style opening act is brittle.
Levers people actually use: lower first-decade spend, a cash bucket for year one and two bills so you are not forced to sell equities at the bottom, part-time or consulting income until age 59½, or a later stop date so the pile is larger before withdrawals begin. None of these are moral wins. They are shock absorbers.
Healthcare and long retirements still apply. Stopping at 50 with forty years ahead means more withdrawal years for storms to matter. A 4% rule studied over thirty years is not a guarantee over fifty. Test a lower rate or a higher buffer if your horizon is long.
You are not trying to forecast the next crash. You are asking: if the rude years come first, do I go back to work in year three, or does the plan bend without breaking? If the answer is back to work and that was never on the table, the date or the spend needs to move while you still have a paycheck.
Flan projects balances and cash flow on a timeline with retirement accounts, spend after work stops, and life events. You can set an earlier or later stop date, change post-retirement spend, and compare scenarios side by side. The question is not only “do I hit the number?” but “what happens in the first decade of withdrawals?”
Sequence of returns risk is about which years hurt while you are selling, not saving. Same average return can still sink a plan if storms arrive first. Stress the opening decade, then adjust date or spend with eyes open.
Name the year and test it under boring and rude assumptions. Read Early retirement is a date for turning the goal into a calendar year, and Coast vs sprint for how hard to save while storms are still someone else's problem.
Try the free money calculators from Flan.
Flan is planning software, not a bank, broker, or licensed advisor. Nothing here is financial, tax, or legal advice.
Read more Flan Files at theflan.app/blog.
