Lean FIRE Calculator
Calculate the minimum savings needed to retire early on a lean budget with frugal living expenses.
Minimum comfortable budget
Lean FIRE Number
$750,000
Lean FIRE Number vs Safe Withdrawal Rate
Formula
## Lean FIRE Lean FIRE means retiring early on a below-average budget. The threshold is typically under $40,000/year (individual) or $60,000/year (couple) in expenses. ### Formula **Lean FIRE Number = Lean Annual Expenses / Withdrawal Rate** At 4% withdrawal rate: - $25,000/year expenses = $625,000 needed - $30,000/year expenses = $750,000 needed - $40,000/year expenses = $1,000,000 needed ### Lean FIRE Lifestyle - Housing: Low-cost area, paid-off home, or house hacking - Transportation: Used car, biking, public transit - Food: Cooking at home, minimal dining out - Entertainment: Free/low-cost activities - Healthcare: ACA marketplace, health sharing
Esempio Risolto
$30,000 lean expenses, 4% withdrawal rate, $300,000 saved, adding $30,000/year at 7%.
- 01Lean FIRE number = $30,000 / 4% = $750,000
- 02Amount remaining = $750,000 - $300,000 = $450,000
- 03Saving $30,000/year at 7% growth
- 04Approximately 9 years to reach Lean FIRE
- 05Monthly withdrawal in retirement = $2,500
Domande Frequenti
Is Lean FIRE sustainable long-term?
It can be, but it leaves little margin for unexpected expenses. Consider building a buffer (aiming for 10-20% above your Lean FIRE number) and having a flexible spending plan that adjusts withdrawals in down markets.
What about healthcare on a lean budget?
At low income levels, you may qualify for significant ACA subsidies, making health insurance affordable. Lean FIRE income often falls within the subsidy-eligible range. Research your state marketplace options.
How is Lean FIRE different from regular FIRE?
Regular FIRE targets average spending (roughly $40,000-$100,000/year). Lean FIRE targets below-average spending. Fat FIRE targets above-average spending. All use the same withdrawal rate math with different expense levels.
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