The 25× rule, stretched
25× yearly spending comes from the 4% rule, which was tested over 30-year retirements. Retiring at 45 can mean 45+ years, so many early retirees aim for 28–33× to leave a cushion.
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Free early retirement calculator
How to retire early
Retiring early takes three things: enough saved overall, money you can reach before 59½, and a plan for health insurance until Medicare at 65. Check all three below.
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Your bridge money — reachable anytime
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In today's dollars, including health insurance
A common planning assumption is 5–7%
Your estimate
Before income tax, in today's dollars
- Total savings at age 50
- $1,476,795
- Your money lasts until
- age 66
- Bridge to age 60
- Taxable runs out at 59
25× target: $1,250,000
About $415,086 in taxable accounts at 50, against roughly $500,000 of spending before retirement accounts open.
The three early retirement hurdles
Most early retirement plans that fail don't run short overall — they hit one of these gaps first.
Bridge the years before 59½
401(k) and IRA withdrawals before 59½ usually carry a 10% penalty. Taxable brokerage accounts, cash, and Roth contributions (not earnings) can fund the gap. Exceptions such as the Rule of 55 and 72(t) payments exist — check them with a tax professional.
Healthcare before Medicare
Medicare starts at 65. Until then, plan for marketplace coverage, COBRA, or a spouse's plan, and include those premiums and out-of-pocket costs in your yearly spending.
What this calculator leaves out
This is a quick estimate. A real early retirement plan also needs Social Security timing, part-time income, health premiums by year, one-time events, and market uncertainty. Finnlight models all of it.
- Health insurance costs before Medicare, by year.
- Part-time or bridge income in the early years.
- Social Security estimates at 62, full retirement age, or 70.
- A Monte Carlo test across hundreds of market paths.
Build your full early retirement plan
Start with the demo to add health costs, part-time work, and your real accounts. Finnlight is an educational planning tool and does not provide financial, tax, or legal advice.