The 4% Rule Explained: How Much Do You Really Need to Retire?
2024-02-01
Educational content only. Rules and tax laws change over time; verify official sources.
The 4% rule is the cornerstone of retirement planning, but most people misunderstand how it actually works.
What is the 4% Rule?
The 4% rule states that you can withdraw 4% of your retirement portfolio in your first year of retirement, then adjust that amount for inflation each year, and have a high probability of not running out of money over a 30-year retirement.
The Math Behind It
If you need $40,000 per year to live comfortably, you'd need:
$40,000 ÷ 0.04 = $1,000,000
That's your "retirement number."
When the 4% Rule Fails
The rule was based on historical US stock market returns. It may not work if:
- You retire during a major market downturn
- You plan for more than 30 years of retirement
- Your portfolio isn't diversified
- Inflation significantly exceeds historical averages
Try It Yourself
Use our free retirement calculator to find your personal number based on your actual spending, income, and life plans.
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