What Is FIRE?
FIRE stands for Financial Independence, Retire Early. It's a movement focused on extreme savings and investment, allowing people to retire far earlier than traditional retirement age — often in their 30s or 40s.
The core principle is simple: save 50-70% of your income, invest it aggressively, and reach a portfolio size that can sustain your living expenses indefinitely through the 4% rule.
Types of FIRE
Lean FIRE
Living on $25,000–$40,000/year in retirement. Requires a portfolio of $625K–$1M. Emphasizes frugality and minimalism. Best for people comfortable with a simpler lifestyle.
Fat FIRE
Living on $100,000+/year in retirement. Requires $2.5M+ portfolio. Maintains a comfortable or luxurious lifestyle. Typically achieved by high earners or business owners.
Barista FIRE
Semi-retirement with a part-time job covering some expenses (and health insurance). Requires a smaller portfolio since you're still earning some income. A popular middle ground.
The Math Behind FIRE
| Savings Rate | Years to FIRE | Example ($80K income) |
|---|---|---|
| 30% | 28 years | Save $24K/yr |
| 50% | 17 years | Save $40K/yr |
| 60% | 12.5 years | Save $48K/yr |
| 70% | 8.5 years | Save $56K/yr |
The FIRE Investment Strategy
Most FIRE adherents follow a simple investment approach: low-cost index funds (primarily S&P 500 or total stock market funds like VTI/VTSAX), tax-advantaged accounts maxed first (401k, Roth IRA, HSA), and a bond allocation that increases as you approach your FIRE date.
Common Criticisms and Rebuttals
"What about healthcare?"
ACA marketplace plans, Health Sharing Ministries, Barista FIRE (part-time work for benefits), and HSA accounts are common solutions. Healthcare costs are real but manageable with planning.
"What if the market crashes?"
FIRE plans typically include a 1-2 year cash buffer, flexible spending strategies (variable withdrawal rates), and the ability to generate some income if needed.
Getting Started
Track your expenses, calculate your savings rate, determine your FIRE number (annual expenses × 25), and use our passive income calculator to see how long it will take to reach financial independence at your current savings rate.