4% Rule Calculator
Free 4% rule retirement calculator. Find out how much you can safely withdraw each year based on the Trinity Study. See your annual income, monthly income, and required portfolio size.
Retirement Withdrawal Rate Calculator
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.
$
$
%
%
Withdrawal Rate
4.0%
Portfolio Lasts
30+ yrs
Survives full period
Ending Balance
$1,056,560.00
Total Withdrawn⧉
$1,903,016.00
Over 30 years
Total Growth⧉
$1,959,576.00
Earnings during retirement
Year 1 Withdrawal⧉
$40,000.00
Year 30 Withdrawal⧉
$94,263.00
Inflation-adjusted
Withdrawal Rate Comparison
| Rate | Year 1 Withdrawal | Lasts | Balance at 40 yrs |
|---|---|---|---|
| 3.0% | $30,000.00 | 40+ yrs | $2,840,617.00 |
| 3.5% | $35,000.00 | 40+ yrs | $1,599,767.00 |
| 4.0%← You | $40,000.00 | 40+ yrs | $358,917.00 |
| 4.5% | $45,000.00 | 34 yrs | $0.00 |
| 5.0% | $50,000.00 | 29 yrs | $0.00 |
| 5.5% | $55,000.00 | 25 yrs | $0.00 |
| 6.0% | $60,000.00 | 22 yrs | $0.00 |
Year-by-Year Projection
| Year | Start Balance | Withdrawal | Growth | End Balance |
|---|---|---|---|---|
| 1 | $1,000,000.00 | $40,000.00 | $57,600.00 | $1,017,600.00 |
| 2 | $1,017,600.00 | $41,200.00 | $58,584.00 | $1,034,984.00 |
| 3 | $1,034,984.00 | $42,436.00 | $59,553.00 | $1,052,101.00 |
| 5 | $1,068,896.00 | $45,020.00 | $61,433.00 | $1,085,309.00 |
| 10 | $1,145,764.00 | $52,191.00 | $65,614.00 | $1,159,187.00 |
| 15 | $1,203,290.00 | $60,504.00 | $68,567.00 | $1,211,353.00 |
| 20 | $1,227,711.00 | $70,140.00 | $69,454.00 | $1,227,025.00 |
| 25 | $1,199,461.00 | $81,312.00 | $67,089.00 | $1,185,238.00 |
| 30 | $1,091,018.00 | $94,263.00 | $59,805.00 | $1,056,560.00 |
Assumes constant returns. Real markets vary — sequence of returns can significantly affect outcomes. Consider flexible withdrawal strategies. Consult a financial advisor.
Planning notes, formulas, and examples
About the Retirement Withdrawal Rate Calculator
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.
When This Page Helps
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.
How to Use the Inputs
- Enter your starting retirement portfolio balance.
- Enter your desired annual withdrawal amount.
- Set the expected annual investment return.
- Set the expected annual inflation rate for withdrawal adjustments.
- Enter your planned retirement duration in years.
- Review your withdrawal rate and year-by-year portfolio projection.
Formula used
Withdrawal Rate = (Annual Withdrawal ÷ Portfolio Balance) × 100
Year N Balance = Prior Balance × (1 + Return) − Inflation-Adjusted Withdrawal
Inflation-Adjusted Withdrawal = Initial Withdrawal × (1 + Inflation)^NExample Calculation
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.
Tips & Best Practices
- A withdrawal rate of 4% or below has historically survived most 30-year periods.
- Consider a flexible withdrawal strategy — reduce spending 10-15% in down-market years.
- Sequence-of-returns risk is highest in the first 5-10 years of retirement.
- Keep 1-2 years of expenses in cash/bonds to avoid selling stocks during downturns.
- Higher stock allocations support higher withdrawal rates over long periods but increase volatility.
- Recalculate your withdrawal rate every few years as your portfolio and needs change.
The Mathematics of Withdrawal Rates
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.
Why Sequence of Returns Matters
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.
Dynamic Withdrawal Strategies
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%.
Sources & Methodology
Last updated:
Methodology
This worksheet projects annual withdrawals against portfolio growth and inflation to show how long a portfolio may last under the assumptions entered. It is a planning model for comparing withdrawal strategies, not a promise that a given spending rate will succeed in future market conditions.
Sources
- Sustainable withdrawal rates in retirement (Vanguard) — Current institutional research on retirement withdrawal sustainability.
- What can new retirees withdraw from a portfolio? (Vanguard) — Withdrawal-rate research on retirement portfolio sustainability.
- Determining Withdrawal Rates Using Historical Data (Journal of Financial Planning / Financial Planning Association) — Original historical withdrawal-rate research often used as a baseline reference.
Frequently Asked Questions
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.
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