Calculate your safe withdrawal rate using the 4% rule. See how long your retirement savings will last with different withdrawal strategies.
| Rate | Annual | Monthly |
|---|---|---|
| 3% | $30,000 | $2,500 |
| 3.5% | $35,000 | $2,917 |
| 4% | $40,000 | $3,333 |
| 4.5% | $45,000 | $3,750 |
| 5% | $50,000 | $4,167 |
Projections based on constant returns. Actual results will vary. Consider consulting a financial advisor for personalized guidance.
A safe withdrawal rate (SWR) is the percentage of your retirement portfolio you can withdraw annually without running out of money. The goal is balancing income needs against longevity risk—the possibility of outliving your savings.
The most famous guideline is the 4% rule: withdraw 4% of your initial portfolio in year one, then adjust that amount for inflation each subsequent year. But is 4% still safe?
Financial planner William Bengen developed the 4% rule in 1994 after analyzing stock and bond returns from 1926 to 1976. He found that a 4% initial withdrawal rate, adjusted annually for inflation, would have survived every 30-year retirement period in history.
For a $1,000,000 portfolio:
The withdrawal amount grows with inflation regardless of portfolio performance. This maintains purchasing power but creates risk during market downturns.
The 1998 Trinity Study expanded on Bengen's work, testing various withdrawal rates and portfolio allocations across historical periods.
| Withdrawal Rate | 30-Year Success (50/50 portfolio) |
|---|---|
| 3% | 100% |
| 4% | 95% |
| 5% | 79% |
| 6% | 56% |
The study confirmed that withdrawal rates above 4% significantly increase the risk of portfolio depletion.
The 4% rule was developed during a period of higher bond yields and strong equity returns. Current conditions differ:
Bond yields are historically low, and some analysts expect lower equity returns than historical averages. This suggests more conservative withdrawal rates may be prudent.
People are retiring earlier and living longer. A 40-year retirement has different requirements than a 30-year one:
| Retirement Length | Suggested Rate |
|---|---|
| 20 years | 5% |
| 30 years | 4% |
| 40 years | 3.5% |
| 50 years | 3% |
The order of investment returns matters as much as the average. Poor returns early in retirement—when you're withdrawing from a declining portfolio—can devastate long-term outcomes even if later returns are strong.
This is the biggest threat to sustainable withdrawals. Consider two scenarios with identical average returns:
Scenario A (bad sequence):
Scenario B (good sequence):
Despite identical average returns, Scenario A may deplete the portfolio while Scenario B thrives. Early losses compound when combined with withdrawals.
The Trinity Study found that portfolios with at least 50% stocks historically performed better than conservative allocations:
| Allocation | 4% Success Rate (30 years) |
|---|---|
| 100% stocks | 95% |
| 75% stocks | 98% |
| 50% stocks | 95% |
| 25% stocks | 71% |
| 0% stocks | 20% |
All-bond portfolios fail because returns don't keep pace with inflation-adjusted withdrawals. Stocks provide necessary growth.
Rather than fixed percentages, consider flexible approaches:
Set upper and lower spending limits. If the portfolio performs well, increase spending. If it declines, reduce spending.
Divide your portfolio into time-based buckets:
Withdraw from short-term bucket, replenishing from longer-term buckets during good markets.
Calculate withdrawal as a percentage of current portfolio value each year:
This automatically adjusts for market conditions but creates income volatility.
Working backward from desired income:
| Annual Need | 3% Rate | 4% Rate | 5% Rate |
|---|---|---|---|
| $40,000 | $1.33M | $1M | $800K |
| $60,000 | $2M | $1.5M | $1.2M |
| $80,000 | $2.67M | $2M | $1.6M |
| $100,000 | $3.33M | $2.5M | $2M |
Retiring at 50 instead of 65 means potentially 15 more years of withdrawals. Use a lower rate or plan for part-time work.
Delaying Social Security increases benefits by 8% per year until age 70. Early retirement might warrant higher early withdrawals, reducing rate later.
Pre-Medicare healthcare can cost 25,000 annually per couple. Factor this into early retirement spending.
If you can reduce spending during downturns—cutting travel, delaying purchases—you can tolerate higher initial rates.
This calculator projects your portfolio over time, showing:
Use it to experiment with different rates, time horizons, and return assumptions. Remember that projections assume steady returns—real markets are volatile.
No withdrawal rate is guaranteed safe. The goal is informed planning that balances enjoying retirement against longevity risk.