If your goal is to exit the corporate grind as quickly as possible, Lean FIRE is the fastest route. By adopting a minimalist lifestyle and maintaining low annual expenses (typically under **$40,000**), you drastically lower the amount of capital required to retire.
The Frugal Leverage Effect
Lean FIRE leverages a powerful mathematical double-whammy:
- Lower Target: Under the 4% rule, an annual spend of $30,000 requires a portfolio of only **$750,000** (compared to $1.5M for $60,000).
- Higher Savings Rate: Living on less means you save a larger portion of your income, directly accelerating the compounding rate of your portfolio.
Lean FIRE Minimalist Target Simulator
Target Savings Required (4% Rule):
$0
Optimize Your Financial Strategy
Model your portfolio growth, adjust savings rate, and test market crash scenarios on our interactive sandbox.
calculate Open Retirement Planner Sandbox