Free retirement withdrawal rate calculator. Simulate portfolio sustainability over 30 years at different withdrawal rates. See how long your nest egg lasts with annual inflation adjustments.
The Retirement Withdrawal Rate Calculator helps you determine how much you can safely withdraw from your portfolio each year without running out of money. Enter your portfolio balance, desired annual withdrawal, expected returns, and inflation to simulate your portfolio's sustainability over your retirement horizon.
Withdrawing too much too early is the biggest risk in retirement. Withdrawing too little means sacrificing lifestyle unnecessarily. This calculator finds the balance by projecting your portfolio year by year with inflation-adjusted withdrawals.
See exactly when your portfolio runs out at different withdrawal rates and find the sweet spot for your situation. For a $1 million portfolio with a 5% withdrawal rate and 6% expected return, inflation at 3% may cause depletion in roughly 22 years — well short of a 30-year retirement. Dropping the rate to 4% extends the runway past 30 years in most scenarios, while 3.5% provides an even wider margin. This kind of sensitivity analysis is impossible to do mentally and requires running the year-by-year simulation this calculator provides, making it an essential tool before you set a withdrawal strategy.
Your withdrawal rate is the single most important variable in determining whether your money lasts. A 1% difference in withdrawal rate can mean the difference between a 20-year and a 40-year portfolio. This calculator lets you test scenarios before committing to a withdrawal strategy. Seeing the projected year-by-year balance decline makes the consequences of each percentage point visible and immediate.
Withdrawal Rate = (Annual Withdrawal ÷ Portfolio Balance) × 100 Year N Balance = Prior Balance × (1 + Return) − Inflation-Adjusted Withdrawal Inflation-Adjusted Withdrawal = Initial Withdrawal × (1 + Inflation)^N
Result: 4.0% withdrawal rate — Portfolio lasts 30+ years
Starting with $1M and withdrawing $40,000 (4%) in year one, increasing by 3% inflation each year, with 6% returns, the portfolio lasts the full 30 years with a remaining balance of approximately $372,000.
A 4% withdrawal rate from a $1M portfolio means $40,000 in year one. But with 3% inflation, you need $40,000 × 1.03 = $41,200 in year two. By year 20, you need $72,000 in nominal terms to maintain the same purchasing power. Your portfolio must grow fast enough to fund these increasing withdrawals.
Two retirees can have the same average return over 30 years but vastly different outcomes. If bad returns come early (when the portfolio is large and withdrawals have the biggest impact), the portfolio can be devastated. Good returns early create a buffer that survives later downturns. This is why the first 5-10 years of retirement are the most critical.
Rather than rigidly withdrawing a set inflation-adjusted amount, many planners recommend guardrail strategies. For example: if your portfolio drops 20%, reduce spending by 10%. If it rises 20%, allow a 10% spending increase. This flexibility can increase the sustainable initial withdrawal rate by 0.5-1%.
Historically, 3.5-4% has been sustainable over 30-year periods. If you're retiring early (40+ year horizon), consider 3-3.5%. If you have guaranteed income (Social Security, pension), you may safely use 4-5% from your portfolio since less of your spending depends on it.
If you withdraw $40,000 in year one and inflation is 3%, you'll need $41,200 in year two to maintain the same purchasing power. Over 30 years, that $40,000 becomes $94,000. The real withdrawal rate accelerates over time, which is why this calculator adjusts for inflation automatically.
A 60/40 stock/bond portfolio has historically returned about 8% nominal, or 5-6% after inflation. A conservative assumption of 5-6% nominal (2-3% real) is reasonable. Don't assume you'll always earn the historical average.
This is called sequence-of-returns risk. A major drop in the first few years can permanently damage your portfolio even if later returns are strong. Mitigate this by keeping 2-3 years of expenses in cash/bonds, reducing withdrawals temporarily, or using a bond tent strategy.
Fixed dollar (inflation-adjusted) withdrawals are simple but rigid. Flexible strategies — like the Guyton-Klinger guardrails or percentage-of-portfolio methods — adjust spending based on portfolio performance, significantly improving sustainability at the cost of variable income.
Required Minimum Distributions may force you to withdraw more than your desired rate starting at age 73-75. You must take the RMD, but you can reinvest the excess in a taxable account. Plan for this by considering Roth conversions before RMDs begin.