LeanFIRE Calculator
Calculate LeanFIRE Number
Plan for minimal-expense retirement
$/year
Formula
LeanFIRE Number = Annual Spending × 25
Frequently Asked Questions
What spending is realistic for LeanFIRE?
$15-25k/year in low cost-of-living areas (SE Asia, Mexico, Central America). In US: challenging without roommates. Most LeanFIRE practitioners live abroad or with family.
How fast can I achieve LeanFIRE?
With 50%+ savings rate: 10-15 years. With 60%+ savings rate: 7-10 years. Higher savings rates = faster FI.
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