FIRE Calculator — Financial Independence & Early Retirement

💡 Pro Planning Insights

• Focus on Savings Rate: Your FIRE date is entirely determined by your savings rate, not your salary. Saving 50% of your net salary means you earn 1 year of freedom for every 1 year worked.
• Adjusting for Inflation: This calculator defaults to expressing future values in **today's purchasing power** by using real rates (Nominal Rate minus Inflation). This helps you plan using familiar prices.
• Safe Withdrawal Rate: When evaluating retirement portfolio viability, the baseline SWR of 4% assumes a 30-year span. For retirement durations exceeding 40 years, modern planners recommend a more conservative SWR of 3% to 3.5%.

Understanding FIRE milestones

Finding your path to early retirement requires parsing different benchmarks. Standard FIRE calculations assume you need a lump sum equal to 25 times your annual living expenses. However, you do not have to wait until you hit your final milestone to gain flexibility. Reaching **Coast FIRE** signifies that your current savings, when left untouched to compound over time, will reach your final target by age 60 without requiring additional savings. Knowing you have hit this target allows you to take lower-paying but more meaningful work, work part-time, or take career sabbaticals since you only need to cover your current expenses.

Related Guide: Learn more about early retirement (FIRE)

The 4% rule and your FIRE number

Financial Independence, Retire Early rests on the Trinity Study finding that a portfolio can sustain roughly a 4% annual withdrawal (inflation-adjusted) for 30+ years. Inverting that gives the famous rule of thumb: your FIRE number is about 25× your annual expenses. Spend ₹12 lakh a year and you need a ₹3 crore portfolio to be work-optional.

The flavours of FIRE

• Lean FIRE — a minimalist budget, smaller target.
• Fat FIRE — a comfortable lifestyle, 30×+ expenses.
• Coast FIRE — enough invested young that growth alone reaches your number by retirement age, so you only need to cover current costs.
• Barista FIRE — partial work covers expenses while investments compound untouched.

What the 4% rule assumes

It assumes a diversified equity-heavy portfolio and accepts a small chance of depletion. Early retirees with 40–50 year horizons often use a more conservative 3.25–3.5% withdrawal, which raises the target multiple to roughly 28–31× expenses.

⚠️ Common Mistakes to Avoid

• Ignoring inflation: Over a 30-year horizon, inflation significantly erodes purchasing power. A flat expense model will fall short.
• Overestimating historical return rates: Assuming a permanent 12% real return is dangerous. Use a conservative 6-8% real rate for safer planning.
• Underestimating safe withdrawal rate: A 4% rate is a historical baseline, but high valuations or long retirements (40+ years) may require a 3-3.5% rate.