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FIRE Calculator – Financial Independence Retire Early Simulator

Calculator Finance calculator financial independence FIRE investment retire early
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Your Numbers
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Your Savings Rate: 37.5%

The 4% Rule is standard; lower is more conservative.
$1,250,000
FIRE Target (25× Expenses)
Age 47
Estimated FIRE Age
17 Years
Years to Freedom
4.0%
Progress to FIRE
FIRE Journey Progress $50,000 / $1,250,000
Wealth Growth Projection
Dashed line = FIRE Target | ● = You reach FIRE
What If You Saved More?
Current Plan (Savings: 37.5%) Age 47
Save 5% More (Rate: 42.5%) Age 45
Save 10% More (Rate: 47.5%) Age 43
Max Frugal (Rate: 60%) Age 39
Year-by-Year Breakdown 17 years to FIRE
Year Age Start Balance Saved Returns End Balance Status
Frequently Asked Questions

FIRE stands for Financial Independence, Retire Early. It's a lifestyle movement focused on aggressive saving and investing—often 50-70% of income—to achieve financial freedom decades before traditional retirement age. The goal is to accumulate enough wealth so that investment returns can cover your living expenses indefinitely, giving you the freedom to choose whether to work or not.

The 4% Rule originates from the Trinity Study (1998, updated periodically). It states that if you withdraw 4% of your investment portfolio annually—adjusted for inflation—your money should last at least 30 years with a high probability of success. For FIRE, this translates to: FIRE Target = Annual Expenses × 25. Some prefer a more conservative 3.5% or even 3% withdrawal rate for longer retirement horizons (40-50+ years).

  • Lean FIRE: Retiring early with minimal expenses (often <$40k/year). Requires strict budgeting and frugality.
  • Regular FIRE: The standard approach—maintaining your current lifestyle in retirement with moderate comfort.
  • Fat FIRE: Retiring early with a generous budget, allowing for travel, luxuries, and a higher standard of living.
  • Coast FIRE: You've saved enough that your investments will grow to your FIRE target by traditional retirement age—no further contributions needed, just "coast" with a job that covers expenses.
  • Barista FIRE: Semi-retirement where you work part-time (e.g., as a barista) for health benefits and supplemental income while your investments grow.

Your FIRE number = Annual Expenses ÷ Safe Withdrawal Rate. With the standard 4% rule, that's Annual Expenses × 25. For example, if you spend $50,000 per year, your FIRE target is $50,000 × 25 = $1,250,000. This calculator uses your actual expenses and chosen withdrawal rate to compute a personalized target. We then simulate compound investment growth (return minus inflation) plus your annual savings until your portfolio reaches that target.

  • Increase your savings rate: The single most powerful lever. Cutting expenses by $5,000/year both reduces your FIRE target AND increases your annual savings.
  • Boost your income: Side hustles, career advancement, or freelance work can dramatically accelerate your timeline.
  • Invest wisely: Low-cost index funds (like S&P 500 ETFs) historically return ~7-10% annually before inflation.
  • Minimize fees and taxes: Use tax-advantaged accounts (401k, IRA, Roth) and avoid high-fee investment products.
  • Track every dollar: Use budgeting tools to identify and eliminate wasteful spending.

Yes. We use the real (inflation-adjusted) rate of return for projections: Real Return = Nominal Investment Return − Inflation Rate. This means all figures are shown in today's purchasing power, so your FIRE target remains constant in real terms. The default assumption is 7% nominal return minus 3% inflation = 4% real return, which is a commonly used conservative estimate for a diversified stock portfolio.

Absolutely. While high incomes accelerate the journey, FIRE is fundamentally about the gap between income and expenses. Someone earning $50,000 who saves 50% ($25,000/year) can reach FIRE faster than someone earning $150,000 who saves 10% ($15,000/year). The math is universal—it's the savings rate that matters most. Many FIRE adherents achieve independence on modest salaries through disciplined spending and consistent investing over 15-20 years.
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