Safe Withdrawal Rate Calculator
Withdrawal Rate Comparison
Year-1 income and estimated portfolio longevity for a $1,000,000 portfolio (7% return, 3% inflation)
| Withdrawal Rate | Year 1 Income | Monthly | Portfolio at Year 30 | Lasts? |
|---|---|---|---|---|
| 3.0% | $30,000 | $2,500 | $1,840,000+ | Indefinitely |
| 3.5% | $35,000 | $2,917 | $1,200,000+ | 40+ years |
| 4.0% | $40,000 | $3,333 | $580,000+ | 30+ years |
| 4.5% | $45,000 | $3,750 | $120,000 | ~28 years |
| 5.0% | $50,000 | $4,167 | Depleted | ~23 years |
| 6.0% | $60,000 | $5,000 | Depleted | ~18 years |
| 7.0% | $70,000 | $5,833 | Depleted | ~14 years |
How We Calculate This
This safe withdrawal rate calculator uses established formulas and industry-standard data to provide accurate estimates.
- Enter your specific values into the calculator fields above
- Our algorithm applies the relevant formulas using your inputs
- Results are calculated instantly in your browser — nothing is sent to a server
- Review the detailed breakdown to understand how each factor affects your result
These calculations are estimates based on standard formulas. For critical decisions, always consult a qualified professional.
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The safe withdrawal rate (SWR) determines how much you can take from your retirement portfolio each year without running out of money over a 30-year retirement.
The basic rule:
- The 4% Rule: Withdraw 4% of your portfolio in year one, then adjust that amount for inflation each year
- The initial withdrawal amount: Portfolio × Withdrawal Rate
- Each subsequent year: increase the withdrawal by the inflation rate
- The portfolio grows by the expected return rate minus withdrawals each year
The 4% rule is based on the Trinity Study, which found that a 4% initial withdrawal rate had a high probability of lasting 30 years across historical market conditions. More conservative planners use 3-3.5%, while those with flexible spending may use up to 5%.
When Would You Use This Calculator?
This safe withdrawal rate calculator is designed for anyone who needs quick, reliable estimates without complex spreadsheets or professional consultations.
- When you need a quick estimate before committing to a purchase or project
- When comparing different options or scenarios side by side
- When planning a budget and need to understand potential costs
- When you want to verify a quote or estimate you've received from a professional
- When teaching or learning about the concepts behind these calculations
Frequently Asked Questions
What is the 4% rule?
The 4% rule says you can withdraw 4% of your portfolio in the first year of retirement, then adjust that dollar amount for inflation each year. Based on historical data, this approach has about a 95% success rate of lasting 30 years with a balanced stock/bond portfolio.
Is the 4% rule still valid?
The 4% rule has been debated in recent years due to lower expected returns and longer retirements. Many financial planners now suggest 3.3-3.5% as a more conservative starting rate, especially for early retirees who need their portfolio to last 40-50+ years.
How does inflation affect withdrawals?
With the SWR method, you increase your withdrawal amount each year by the inflation rate to maintain purchasing power. For example, if you withdraw $40,000 in year 1 and inflation is 3%, you withdraw $41,200 in year 2, $42,436 in year 3, and so on.
What portfolio allocation should I use?
The Trinity Study used a 50/50 to 75/25 stock/bond split. A common approach is to subtract your age from 110 to get your stock allocation (e.g., age 65 = 45% stocks, 55% bonds). More aggressive allocations have higher expected returns but more volatility.
What if the market crashes early in retirement?
Sequence of returns risk is the biggest threat to SWR. A market crash in the first 5 years of retirement is much more damaging than one later. Strategies to mitigate this include: flexible spending (reduce withdrawals in down years), a cash buffer (2 years of expenses), and a bond tent.
How much do I need to retire?
A rough formula: Annual expenses / Withdrawal rate = Required portfolio. At 4%, you need 25× your annual expenses. If you spend $60,000/year, you need about $1.5 million. At 3.5%, you need about 28.6× expenses, or $1.71 million.