FIRE Calculator
Project your timeline to Financial Independence and Early Retirement (FIRE), comparing Lean, Fat, Coast, and Barista FIRE benchmarks.
Advanced Insights (Optional)
Improve the accuracy of your personalized financial diagnostics.
How to Use the FIRE Calculator
Financial Independence, Retire Early (FIRE) requires a clear savings target and compounding strategy. This calculator helps you solve for your years to FIRE or required savings, and maps out your progress toward different FIRE milestones (Lean, Fat, Coast, Barista).
- Solve For: Bounded parameter in the mathematical model.
- Current Age: Bounded parameter in the mathematical model.
- Current Savings & Investments ($): Bounded parameter in the mathematical model.
- Monthly Contributions ($): Bounded parameter in the mathematical model.
- Expected Annual Expenses ($/year): Bounded parameter in the mathematical model.
- Annual Portfolio Return (%): Bounded parameter in the mathematical model.
- Safe Withdrawal Rate (%): Bounded parameter in the mathematical model.
- Tax Drag on Investment Growth (%): Bounded parameter in the mathematical model.
- Adjust for Inflation: Bounded parameter in the mathematical model.
- Expected Inflation Rate (%): Bounded parameter in the mathematical model.
- Target Timeline (Years): Bounded parameter in the mathematical model.
- Annual Gross Salary ($): Bounded parameter in the mathematical model.
- Risk Profile: Bounded parameter in the mathematical model.
- Traditional Retirement Age: Bounded parameter in the mathematical model.
- Expected FIRE Lifestyle: Bounded parameter in the mathematical model.
FIRE Savings & Nest Egg Planning: Formula & Worked Example
Explore the mathematics of Financial Independence, Retire Early (FIRE), safe withdrawal rates, and early retirement timelines.
Read Full Guide →What is the safe withdrawal rate (SWR)?
The SWR is the percentage of your portfolio you withdraw in the first year of retirement, then adjust for inflation in subsequent years. The 4% rule is a popular SWR based on historical U.S. market durability.
What is Coast FIRE?
Coast FIRE means you have saved enough capital today that, with zero additional contributions, it will compound to your target FIRE number by your traditional retirement age.
How does tax drag affect my FIRE plans?
Taxes on dividends and capital gains act as a continuous drag on your portfolio growth, reducing your compounding efficiency. Using tax-advantaged accounts helps mitigate this.
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