Finnlight · Retirement risk
Sequence-of-returns risk
When you are withdrawing savings, the order of market returns matters—not just their average. Early losses can leave fewer dollars invested for the recovery.
Same returns. Different order.
Both examples start at age 65 with the same balance and fixed year-end withdrawals. One earns +20% then −10%; the other earns −10% then +20%. Returns are illustrative real returns, not historical market data. Inflation, fees, other income, and taxes are excluded.
Sample values. Try a withdrawal of zero to isolate investment growth.
- Gain first · Balance after year 2
- $890,000
- Loss first · Balance after year 2
- $860,000
Age · Invested balance in today's dollars
Content and examples checked · Educational, not personalized advice
Walk through the $1 million example
With $1 million and $100,000 withdrawn at each year-end, a 20% gain leaves $1.1 million after the first withdrawal. A 10% loss the next year followed by another withdrawal leaves $890,000. Reverse the returns: the first loss and withdrawal leave $800,000; the later 20% gain and withdrawal leave $860,000. The same pair of returns ends $30,000 apart.
Without withdrawals, both paths end at $1.08 million. Multiplying by 1.20 and 0.90 gives the same result in either order. Withdrawals interrupt that symmetry because different amounts remain invested each year. The 10% withdrawal here is deliberately large to make the effect visible; it is not a suggested retirement spending rate.
This two-year example cannot tell you a 30-year success rate. It only isolates one mechanism. Real portfolios have many more years, variable inflation, investment fees, and changing income. The chance and size of future losses are unknown.
Why an average-return forecast is not enough
A constant-growth projection helps you inspect account balances, contributions, spending, and income dates. It does not represent a market downturn followed by recovery. A favorable straight line can hide how sensitive the first withdrawal years are to losses. Sequence risk is particularly important near retirement, when contributions stop and portfolio withdrawals may begin.
Finnlight's advanced simulation varies annual market returns around the plan assumptions. The result summarizes modeled paths, not a guarantee or an observed probability for your household. Read it alongside the year-by-year cash flows and published model assumptions.
What can you stress-test?
Separate essential costs from flexible spending. A planned reduction in travel or large purchases may reduce withdrawals after losses, but a plan that assumes you can cut rent, food, and healthcare dramatically may be unrealistic. Test a lower discretionary budget that you would actually accept. Do not change a plan or investment strategy solely to improve a displayed success percentage.
Compare later retirement, reliable income start dates, and the withdrawals needed while waiting for benefits. A cash reserve may provide near-term funding but also has opportunity and inflation costs; it does not eliminate investment risk. Diversification can manage concentration risk, not guarantee that assets avoid simultaneous losses. Before major changes, discuss the trade-offs with a qualified advisor.
Dynamic spending or guardrails means reviewing withdrawals when portfolio values change. There is no automatic spending-cut rule in this example. Any real policy needs thresholds, essential-cost protection, and a review schedule. The withdrawal calculator lets you compare flat spending amounts; it is not a personalized guardrail recommendation.
Common questions
Does a loss always make a retirement plan fail?
No. The impact depends on its size and timing, withdrawals, remaining assets, and other income. This example demonstrates sensitivity, not certain failure.
Is sequence risk only a stock-market issue?
No. It arises when changing returns interact with cash flows. The two-path example simplifies the portfolio rather than modeling one asset class.
Can Monte Carlo remove sequence risk?
No. Simulation helps explore it under assumptions. It does not prevent losses or guarantee a workable spending plan.
Are these figures after tax?
No. Examples and Finnlight projections are before income tax. Your personal tax situation needs separate review.
Sources: Bengen's historical withdrawal research · FINRA retirement portfolio guidance. The illustrated sequences are calculated examples, not quoted historical outcomes.