FIRE Calculator (Financial Independence, Retire Early)
Discover your exact FIRE target number, see how your savings rate accelerates retirement, and calculate your CoastFIRE milestone with zero server tracking.
Financial Independence Inputs
What it actually costs you to live for 1 year.
401(k), IRAs, brokerage accounts, and index funds.
FIRE Trajectory by Year
Inflation-Adjusted Real $| Age | Year | Annual Savings | Investment Growth | Portfolio Balance |
|---|
Complete Guide to Financial Independence, Retire Early (FIRE)
1. The Shockingly Simple Math Behind Early Retirement
Your time to retirement is determined almost entirely by one metric: your savings rate percentage.
At a standard 10% savings rate, it takes roughly 43 working years to retire. Double your savings rate to 50%, and compound interest allows you to retire in less than 15 years, regardless of your absolute income level.
2. The 4% Rule & Trinity Study
The 4% Rule establishes that if you withdraw 4% of your total invested portfolio in year one of retirement (and adjust future withdrawals for inflation), your money has a 95%+ probability of surviving indefinitely.
Your target FIRE Number is simply 25 times your annual living expenses. If your annual expenses are $40,000, your freedom number is $1,000,000.
3. The Variations of FIRE
- LeanFIRE: Retiring on a minimalist budget (typically under $40,000/year).
- FatFIRE: Living abundantly in high-cost cities with an annual budget of $100,000 to $200,000+.
- BaristaFIRE: Leaving corporate stress to work enjoyable part-time jobs (e.g. at Starbucks for health insurance) covering 30%–50% of living costs.
- CoastFIRE: Saving aggressively in your 20s until compounding alone will reach your FIRE number at age 65 without saving another dollar.
4. Accessing Retirement Accounts Before Age 59½
You do not need to wait until age 59½ to touch your retirement accounts. Early retirees access funds penalty-free using:
- Roth IRA Conversion Ladder: Rolling Traditional 401(k) funds to Roth, waiting 5 years, and withdrawing penalty-free.
- SEPP / Rule 72(t): Substantially Equal Periodic Payments based on IRS life expectancy tables.
- Standard Taxable Brokerage Accounts: Zero withdrawal restrictions or age limits.
Frequently Asked Questions
How does inflation affect my FIRE calculations?
This calculator uses a real rate of return (nominal returns minus inflation, typically 7% real based on historical S&P 500 returns). This means all target FIRE numbers, savings milestones, and projections are already stated in today's purchasing power dollars!
Is a 4% safe withdrawal rate safe for early retirees?
The original Trinity study tested a 30-year horizon. If retiring in your 30s or 40s (a 40 to 60-year horizon), many financial economists recommend a slightly more conservative Safe Withdrawal Rate of 3.25% to 3.5% (equivalent to 28x to 30x annual expenses) to virtually eliminate Sequence of Returns Risk.
How do health insurance costs factor into early retirement?
Before Medicare eligibility at age 65, early retirees typically purchase health coverage through the Affordable Care Act (ACA) health insurance marketplace. Because ACA premium tax credits are based on taxable income (AGI) rather than net worth, many early retirees qualify for substantial healthcare premium subsidies.