Fat FIRE on $100,000/year — $2.86M target
FIRE number: $2,857,143 ($100,000/year × 28.6). At 7% real return saving $5,000/month from $150,000, you reach it in 20 years — age 50. Savings rate: 38%.
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Frequently asked questions
What's the FIRE number for fat fire on $100,000/year — $2.86m target?
FIRE number = annual expenses × (100 / SWR). For $100,000/year expenses at 3.5% SWR: $100,000 × 28.6 = $2,857,143.
How many years to reach this FIRE number?
Starting with $150,000 and saving $5,000/month at 7% real return, you reach $2,857,143 in 20 years at age 50. Total contributed in the simulation: $1,350,000; growth: $1,690,182.
What savings rate does this require?
$60,000/year saved out of an implied $160,000 income = 38% savings rate. This is an arithmetic scenario; the result changes with income, expenses, contributions, taxes, fees and return assumptions.
What if my real return is different?
Keeping this scenario's balance, expenses, contributions and 3.5% SWR fixed, a 5% real-return sensitivity reaches the target in 23 years; an 8% sensitivity reaches it in 19 years. These are constant-return illustrations, not forecasts.
How this number was calculated
FIRE number = Annual expenses × (100 / SWR)
= $100,000 × 28.6
= $2,857,143
Years to FIRE: solve bal × (1 + r) + annual_contrib = FIRE
starting bal = $150,000
annual_contrib = $60,000
r (real return) = 0.07
→ 20 years (age 50)
Total contributed = $1,350,000
From growth = $1,690,182 (59% of FIRE number)Math grounded in the Trinity Study (Cooley et al., 1998) and Karsten Jeske's SWR Series.
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Open the FIRE calculator →Educational projection. Future returns are not guaranteed. Sequence-of-returns risk matters for early retirees — see Karsten Jeske's SWR Series for nuanced analysis. Verified 2026-05-27.