Comprehensive Guide
Learn more in our Investing Guide.
How it works
sequence of returns risk calculator takes your inputs and produces best case: final balance, worst case: final balance, safe withdrawal rate, best vs worst case gap. See how the order of returns (not just average) affects your portfolio — critical for retirees drawing down savings. You provide 4 inputs: Starting portfolio (currency, in dollars) (default: 1000000 dollars); Annual withdrawal (currency, in dollars) (default: 40000 dollars); Average annual return (%) (percent, in percent) (default: 7 percent); Retirement horizon (years) (number) (default: 30). The calculator returns 4 outputs: Best case: final balance (the primary result); Worst case: final balance (a secondary output); Safe withdrawal rate (a secondary output); Best vs worst case gap (a supplementary figure). Investment calculations rest on a few variables — principal, return rate, time, and compounding — but their interaction is non-linear enough that intuition alone gets the answer wrong more often than not. This tool runs the real formula with your inputs and shows the numbers that matter, not the rounded approximations from a textbook. The underlying formula: Portfolio = Previous balance × (1 + return) − Withdrawal | Safe withdrawal rate = Withdrawal ÷ Portfolio With the default values, best case: final balance is computed from the interaction of every input field — change any one of them and the result updates immediately, so you can stress-test different scenarios without re-entering the whole form. Adjust the inputs to match your real financial situation. The defaults are realistic starting points, but every person's circumstances differ — your actual income, expenses, rates, and timelines will produce a different answer. Use the tool iteratively: start with the defaults, then change one variable at a time to see which factor has the largest impact on your outcome.Formula
Portfolio = Previous balance × (1 + return) − Withdrawal | Safe withdrawal rate = Withdrawal ÷ Portfolio
Tips
- The 4% rule is based on worst-case sequence — it is conservative by design.
- Maintain 2–3 years of cash buffer to avoid selling in down markets.
- Reduce withdrawals during market downturns to preserve portfolio longevity.
- The first 5 years of retirement are the most critical for sequence risk.
Frequently asked questions
What is sequence of returns risk?
It is the risk that poor investment returns occur when you are withdrawing money from your portfolio. A retiree who experiences a bear market in year 1 can run out of money even if average returns are good, because early losses are never recovered.
How do I protect against sequence risk?
1. Maintain 2–3 years of expenses in cash. 2. Use a flexible spending strategy (reduce withdrawals in down markets). 3. Have a bucket strategy (short-term cash, medium-term bonds, long-term stocks).
How accurate are the calculator results?
The math is exact — the same formulas a financial professional would use by hand. The precision of the output depends entirely on how realistic your inputs are. Use your actual numbers rather than estimates when possible. The defaults are reasonable starting points, but your real income, rates, and timeline will produce a different result.