How much do you really need to retire?
The most-cited rule — the 4% rule — says you can safely withdraw 4% of your retirement portfolio in your first year of retirement, then adjust that amount for inflation each year, with low risk of running out of money over a 30-year retirement. That means a $1,000,000 portfolio supports about $40,000/year in withdrawals.
Why the 4% rule may be too aggressive
The 4% rule was derived by William Bengen in 1994 using historical US market data from 1926–1992. Today's lower bond yields and longer life expectancies have led many planners to recommend 3.5% or even 3% as a safer withdrawal rate. Morningstar's 2024 research suggests 3.3%–3.7% is more realistic for the next 30 years.
The three-legged stool of retirement income
- Social Security: Averages ~$1,900/month; maxes at ~$4,800/month at full retirement age in 2025.
- Pensions: Increasingly rare outside government work, but still meaningful for teachers, police, military.
- Personal savings: 401(k), IRA, brokerage, real estate — the only leg most modern workers can count on.
The biggest retirement risk isn't market crashes — it's sequence-of-returns risk. If the market crashes 30% in the first two years of your retirement, you may be forced to sell shares at low prices to fund withdrawals, permanently impairing your portfolio even if markets recover later.
Frequently asked questions
How much do I need to retire?
The most-cited rule is 25× annual expenses (the 4% rule). If you spend $60,000/year, you need $1.5M. However, modern research suggests 28-30× expenses (3.3-3.5% withdrawal rate) is safer given longer life expectancies and lower bond yields.
What is the 4% rule?
Derived by financial planner William Bengen in 1994. The rule: in your first year of retirement, withdraw 4% of your portfolio. Each subsequent year, withdraw the same dollar amount adjusted for inflation. Historically, this strategy survived every 30-year retirement period since 1926.
Is the 4% rule still safe?
Possibly not. Bengen's research assumed historical bond yields (4-6%) that no longer exist. Morningstar's 2024 research suggests 3.3-3.7% is more realistic for the next 30 years. Many planners now recommend 3.5% as the 'safe' withdrawal rate.
At what age should I retire?
It depends on your savings, expenses, and Social Security strategy. Social Security full retirement age is 67 for most Americans. Claiming at 62 reduces benefits by 25-30%. Delaying to 70 increases benefits by 24-32%. If you can wait, 70 is mathematically optimal for most people.
How does inflation affect retirement?
Dramatically. At 3% inflation, $1,000,000 today has the purchasing power of $412,000 in 30 years. Retirement calculators must account for inflation — that's why we show both nominal ($1.5M) and inflation-adjusted ($750K in today's dollars) projections.
What is sequence-of-returns risk?
The risk that market crashes early in your retirement. If the market drops 30% in years 1-2 of retirement, you may be forced to sell shares at low prices to fund withdrawals — permanently impairing your portfolio even if markets later recover. Mitigate by holding 2-3 years of cash/bonds.
Should I take Social Security at 62, 67, or 70?
Generally 70, if you can afford to wait. Each year you delay past full retirement age increases benefits by 8%. The break-even age (where waiting pays off) is typically ~80. If you expect to live past 80 and don't need the income, wait. If you have health issues or need the cash, claim earlier.
Glossary of key terms
- 4% Rule
- Withdraw 4% of portfolio in year 1, adjust for inflation annually. Historically safe for 30-year retirements.
- Safe Withdrawal Rate
- The percentage you can withdraw annually with low risk of running out. Modern research: 3.3-3.7%.
- Sequence-of-Returns Risk
- Risk that market crashes early in retirement permanently impair your portfolio.
- FIRE Number
- Portfolio size needed for financial independence. Calculated as annual expenses ÷ withdrawal rate.
- Asset Allocation
- Mix of stocks, bonds, and other assets. Drives both returns and volatility.
Common mistakes to avoid
- Using 4% withdrawal rate without understanding modern research suggesting 3.3-3.5%
- Not accounting for inflation — $1M today isn't $1M in 30 years
- Underestimating lifespan — plan for 95+ to be safe
- Forgetting healthcare costs — Medicare doesn't start until 65, and doesn't cover everything
- Claiming Social Security at 62 because you can — waiting to 70 increases benefits 24-32%
Pro tips
- Aim for 25-30× annual expenses before retiring — modern research suggests 4% is too aggressive.
- Hold 2-3 years of cash/bonds when entering retirement — protects against sequence-of-returns risk.
- Delay Social Security to age 70 if possible — guaranteed 8% annual return is unbeatable.
- Use a 'glide path' allocation — gradually shift from stocks to bonds as you approach retirement.
- Plan for healthcare before Medicare — early retirees need bridge coverage (ACA marketplace, COBRA, spouse's plan).
Results are estimates for educational purposes only and not financial advice. Consult a licensed professional for advice specific to your situation.