Step 3 of 5 — Calculate your FIRE number
Calculate your Financial Independence, Retire Early (FIRE) number and how many years until you reach it.
Default: 4%
4.0% safe withdrawal rate
Current gap: $1,150,000
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FIRE Roadmap
Next Step: Project your growth
FIRE Number = Annual Expenses ÷ Safe Withdrawal Rate
At 4% SWR: FIRE Number = Annual Expenses × 25
Years to FIRE uses future value formula: FV = PV(1+r)^n + PMT × ((1+r)^n - 1)/r
Solve for n where FV = FIRE Number.
FIRE Number = Annual Expenses × 25 (based on 4% rule). If you spend $60,000/year, you need $1.5M invested. Then you can withdraw 4% annually.
Lean FIRE: retire on $40K/year or less ($1M). Regular FIRE: $50K-80K/year ($1.25M-2M). Fat FIRE: $100K+/year ($2.5M+). Barista FIRE: part-time work supplements.
Depends on savings rate. At 50% savings rate: ~17 years. At 70%: ~9 years. At 25%: ~32 years. Savings rate is the biggest lever.
Research shows you can withdraw 4% of portfolio annually (inflation-adjusted) for 30 years with 95%+ success. For 40-50 year retirements, use 3-3.5%.
At 40, you need ~40 years of income. Use 3% withdrawal rate. If spending $60K/year: $2M needed. Factor in healthcare until Medicare at 65.
FIRE calculations often exclude SS since early retirees won't receive it for 20+ years. Factor it in when estimating post-65 needs — it reduces your required portfolio.
Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.