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Based on historical withdrawal research

Safe Withdrawal Rate Calculator

See how long your retirement portfolio lasts at different withdrawal rates — with inflation adjustment. Compare 3%, 3.5%, 4%, and 4.5% side by side.

Portfolio value at retirement $1,000,000
$
Annual spending $40,000
$
Retirement age 65
Annual portfolio return
6%
Annual inflation rate
2.5%
3.0%
3.5%
4.0%
4.5%
3.0% withdrawal
$0/year · $0/month
3.5% withdrawal
$0/year · $0/month
4.0% withdrawal
$0/year · $0/month
4.5% withdrawal
$0/year · $0/month
Your withdrawal rate
0%
Years portfolio lasts
Break-even age
Portfolio value over time by withdrawal rate
3.0%
3.5%
4.0%
4.5%
Year-by-year at your withdrawal rate
Year Age Withdrawal Portfolio start Portfolio end

How withdrawal rates work: Your withdrawal rate is your first-year withdrawal divided by your starting portfolio value. Each year, you withdraw the same dollar amount adjusted for inflation — not a fixed percentage of the current portfolio. A $1M portfolio at 4% means $40,000 in year one; year two is $40,000 × (1 + inflation rate), regardless of portfolio performance. This is the method used in Bengen's original 4% rule research.

This calculator uses a simplified model with constant average returns. Actual retirement outcomes depend on sequence of returns — the order in which good and bad years occur — which this model does not simulate. Historical Monte Carlo analysis suggests the 4% rule has approximately 90% success over 30 years; actual outcomes vary. Not financial advice. Consult a qualified financial advisor before making retirement income decisions.

How the safe withdrawal rate calculator works

A safe withdrawal rate is the percentage of your retirement portfolio you can withdraw annually without running out of money over your retirement horizon. The most studied rate is 4% — from Bengen's 1994 research showing this rate survived every 30-year retirement period in U.S. historical data. Morningstar's 2026 research puts the conservative baseline at 3.9% for fixed-spending retirees.

This calculator compares four common withdrawal rates side by side, showing how long your portfolio lasts at each rate with inflation-adjusted annual spending. The year-by-year table shows exactly how your portfolio depletes (or grows) over time at your actual withdrawal rate based on your annual spending and portfolio size.

How to use this calculator

For background on the 4% rule and what Morningstar's 2026 research says about safe withdrawal rates, read the 4% rule explained guide. To calculate your FIRE number and years to retirement, use the FIRE calculator.