How Long Will My Savings Last?

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The 4% rule, explained simply

Take 4% of your savings in your first year of retirement, then raise that dollar amount with inflation each year. Historically, that has lasted about 30 years.

How much 4% gives you

SavingsFirst-year withdrawal (4%)Per month
$250,000$10,000$833
$500,000$20,000$1,667
$750,000$30,000$2,500
$1,000,000$40,000$3,333
$1,500,000$60,000$5,000

Where it comes from

In 1994, financial planner William Bengen tested every 30-year stretch of U.S. market history. Starting with 4% and raising it for inflation, a mix of stocks and bonds never ran out in 30 years, even through the worst periods. That became known as the 4% rule.

Its limits

  • It's built for 30 years. If you retire at 55, you may need your money to last 40 years or more.
  • It ignores your other income. Social Security and pensions mean you may need to take out less.
  • Real spending changes. Many people spend more early in retirement and on health care later.
  • Taxes and fees come out too. Money taken from a traditional IRA or 401(k) is usually taxed.
Check your own plan instead of a rule of thumb. Our calculator uses your savings, spending, Social Security and investment mix, and shows your chance of lasting to 90.

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