FIRE Calculator

Find your Financial Independence, Retire Early (FIRE) metrics. Calculate Lean FIRE, Fat FIRE, and SWR sustainability rules.

Parameters
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%
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₹ %
%
Calculated Results
Standard FIRE Number -
Lean FIRE -
Fat FIRE -
Years to FIRE -
Compounding
Inflation
%
Visual Projection
Invested
Corpus
Real Value
Yearly Breakdowns
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Financial Independence Retire Early (FIRE) Strategy

Your FIRE Number represents the target investment portfolio size where your annual expenses are fully covered by a safe, inflation-adjusted withdrawal rate (typically 3% to 4%) indefinitely.

Formula & Mathematical Approach

Calculates the target corpus and years to reach Financial Independence / Retire Early (FIRE).

FIRE Corpus=Annual Expenses×100Safe Withdrawal Rate\text{FIRE Corpus} = \text{Annual Expenses} \times \frac{100}{\text{Safe Withdrawal Rate}}
Show Plain Text / Excel Formula 
FIRE Corpus = Annual Expenses * (100 / Safe Withdrawal Rate)

Key Assumptions

  • Uses the Safe Withdrawal Rate (SWR, e.g. 4%) to size the portfolio.
  • Annual expenses are adjusted for inflation.
  • No other post-retirement active income is assumed.