Lean FIRE Calculator
Discover your Lean FIRE number — the ultra-frugal path to financial independence. See how cutting expenses dramatically shortens your timeline.
Lean spending • Savings rate • FIRE comparison • 100% Free📊 Your Details
Enter your financial information to calculate your Lean FIRE number and compare it to standard FIRE.
📈 Your Lean FIRE Results
See your Lean FIRE number, savings rate, and how it compares to standard FIRE.
🌱 Lean FIRE
🔥 Standard FIRE
Based on retire at 65, 4% withdrawal, 3% inflation.
Lean FIRE by the Numbers
See how Lean FIRE targets compare across different spending levels and withdrawal rates.
| Lean Spending | Withdrawal Rate | Lean FIRE Number | Standard FIRE ($50K) | Years Saved |
|---|---|---|---|---|
| $20,000 | 4% | $500,000 | $1,250,000 | ~10 years |
| $25,000 | 4% | $625,000 | $1,250,000 | ~7 years |
| $30,000 | 4% | $750,000 | $1,250,000 | ~5 years |
| $35,000 | 3.5% | $1,000,000 | $1,250,000 | ~3 years |
Assumes 7% expected return, 3% inflation, $1,500/month contributions, starting at age 35. Years saved is approximate and depends on individual circumstances.
Lean FIRE Insights
Key concepts to understand on your journey to Lean FIRE.
What Is Lean FIRE?
Lean FIRE is the practice of retiring on a modest budget — typically $20,000–$35,000 per year. It prioritises freedom and minimalism over luxury, allowing you to reach FIRE much sooner.
The Power of Frugality
Every dollar you cut from your annual spending reduces your FIRE target by $25 (using the 4% rule). Cutting $10,000/year reduces your target by $250,000 and can shave years off your timeline.
High Savings Rate
Lean FIRE requires a high savings rate — often 50-70% of your income. The combination of low spending and high savings is the fastest path to financial independence.
Lifestyle Design
Lean FIRE isn't just about money — it's about designing a life you love with less. It encourages intentionality, minimalism, and finding joy in experiences rather than things.
Frequently Asked Questions
Common questions about Lean FIRE and how this calculator works.
