FIRE Calculator (Early Retirement)
Calculate your path to FIRE (Financial Independence, Retire Early). Analyze your early retirement potential based on current assets, savings rate, and investment returns.
📖 How to Use
- Enter your current age and target retirement age
- Enter your current assets in dollars
- Enter your monthly savings amount
- Enter expected annual investment return (typically 5-8%)
- Enter your expected monthly expenses in retirement
- Check FIRE achievability and compare 3 FIRE types
✨ Features
- ✓4% rule-based retirement fund calculation
- ✓FIRE achievability analysis with timeline
- ✓Lean/Regular/Fat FIRE type comparison
- ✓Year-by-year asset growth simulation chart
- ✓Time to goal calculation
- ✓Monthly passive income projection
📐 Formula
Required Assets = Annual Retirement Expenses × 25 (4% Rule)
Asset Growth = Current Assets × (1 + Return Rate)^Years + Monthly Savings Compounded💡 How It Works
- •FIRE (Financial Independence, Retire Early) is a movement focused on achieving financial freedom for early retirement.
- •4% Rule: Derived from the 1998 Trinity Study, withdrawing 4% annually has a 95% success rate over 30 years.
- •Required Assets = Annual Expenses × 25 (= 1 ÷ 0.04). $40K/year spending requires $1M.
- •Lean FIRE: Minimal lifestyle for faster retirement (70% of normal spending)
- •Regular FIRE: Maintaining current lifestyle in retirement
- •Fat FIRE: Comfortable retirement with higher spending (150% of normal)
- •Higher savings rate = faster FIRE. 50% savings rate ≈ 17 years, 70% ≈ 8.5 years to FIRE.
❓ FAQ
Q. What is FIRE?
A. FIRE (Financial Independence, Retire Early) is a lifestyle movement focused on achieving financial freedom through high savings rates and smart investing to retire early.
Q. Is the 4% rule reliable?
A. The 4% rule is based on US historical market data assuming 30-year retirement. For early retirement (40+ years) or uncertain markets, 3-3.5% may be safer.
Q. How much should I save to achieve FIRE?
A. Savings rate is key. Saving 50%+ of income can achieve FIRE in ~17 years. 25% savings ≈ 32 years, 70% savings ≈ 8.5 years.
Q. What's the difference between Lean and Fat FIRE?
A. Lean FIRE means retiring quickly with minimal expenses, while Fat FIRE means accumulating more assets for a comfortable retirement. Choose based on your desired lifestyle.
Q. Is FIRE realistic?
A. Absolutely. The math is straightforward, but it requires discipline. Consider healthcare costs, inflation, and unexpected expenses. Social security can supplement your FIRE assets.
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