FIRE Calculator

Your FIRE Details

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Yrs
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Your FIRE Target

Your FIRE Number

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This is the corpus you need to be financially independent.

Path to FIRE

Based on your inputs, the goal is not reachable. Try increasing your investments.

Guide & Methodology

About the FIRE (Financial Independence, Retire Early) Calculator

Determine your exact FIRE number, safe withdrawal rate, target savings rate, and timeline to retire early and live off investments.

What this calculator does

  • Calculates the exact nest egg needed to achieve financial freedom using the 4% rule or custom Safe Withdrawal Rates (SWR).
  • Estimates how many years until your passive investment income covers all living expenses.
  • Supports Lean FIRE, Fat FIRE, Barista FIRE, and Coast FIRE scenarios.
  • Adjusts for post-retirement inflation and life expectancy.

How it Works & Key Inputs

Step 1

Annual Living Expenses

Input your current annual expenses and estimated post-retirement lifestyle costs.

Step 2

Current Savings & Annual Savings Rate

Provide your existing invested net worth and annual contributions.

Step 3

Safe Withdrawal Rate (SWR)

Choose a withdrawal rate (e.g. 3.5% or 4.0% based on the Trinity Study).

Step 4

Discover Your FIRE Age

Inspect the exact year your investment returns outpace your annual burn rate.

Core Calculation Parameters
Annual ExpensesTotal yearly expenditure required to maintain your lifestyle.
Safe Withdrawal Rate (SWR)The annual percentage withdrawn from portfolio without depleting capital (typically 3.5% - 4%).
Expected Portfolio ReturnExpected post-inflation real return of your investment portfolio.

Formula & Calculation Logic

Mathematical Model

FIRE Number = Annual Expenses × (100 / SWR) = Annual Expenses × 25 (at 4% SWR)

Classic Trinity Study safe withdrawal methodology.

Variables Breakdown

FIRE NumberTarget portfolio required for permanent financial independence
Annual ExpensesProjected annual living expenditure
SWRSafe Withdrawal Rate (typically 3.5% to 4%)
Calculation Example: If your annual household expenses are ₹12,00,000, at a 4% SWR your FIRE Number is ₹12,00,000 × 25 = ₹3,00,00,000 (₹3 Crores).

Frequently Asked Questions (FAQ)

Disclaimer: This calculator is provided for educational and illustrative purposes only. Actual financial outcomes may vary based on statutory changes, lender terms, fund fees, and prevailing market dynamics.