Retirement Number Calculator
Retirement Number Calculator
The number people avoid looking at
Corpus needed (inflation-adjusted)
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Quick estimate via the 4% rule
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future annual expense divided by 4%
Monthly expense at retirement
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Precise corpus vs the 4% rule
The main figure inflates your current spending to what it will cost at retirement, then works out a lump sum that funds it for the years you set. The 4% rule figure is a well-known rough shortcut (some retirement researchers now argue for a somewhat lower withdrawal rate) -- both are estimates, not guarantees, especially over a 30-plus year retirement.
Frequently asked questions
How much do I actually need to retire comfortably?
It depends on your expected retirement expenses, Social Security benefit, and life expectancy -- there's no single universal number, though rules of thumb like "25x annual expenses" are a common starting point. This calculator lets you build a more specific estimate from your own numbers.Read more: Retirement Number Calculator: How Much Is Actually Enough?
What's the difference between a 401(k) and an IRA?
A 401(k) is employer-sponsored, often with an employer match, and has a higher annual contribution limit. An IRA is opened independently at a brokerage, with a lower contribution limit but typically far more investment choice. Many people contribute to both -- a 401(k) up to the employer match, then an IRA.Read more: The Scary Number, and Why You Shouldn’t Look Away
When should I claim Social Security -- 62, 67, or 70?
Claiming at 62 gives a permanently reduced benefit; waiting until your full retirement age (typically 66-67) gives the full benefit; waiting until 70 gives the maximum benefit, growing roughly 8% per year you delay past full retirement age. The right age depends on your health, other income, and whether you need the money sooner.Read more: Social Security Estimator: Why Claiming Age Changes Everything
How does inflation affect my retirement savings?
Inflation erodes purchasing power both before and during retirement, so a nominal dollar figure that looks sufficient today can fall short decades from now. This calculator shows results in both nominal and inflation-adjusted terms so you're not planning around a number that quietly loses value.Read more: Roth vs Traditional Calculator: Pay Tax Now or Pay Tax Later?
Estimates only, not financial advice. See our Disclaimer.
