FIRE Number Calculator – Financial Independence

Calculate your FIRE number—the net worth needed to retire early. Based on your annual expenses and safe withdrawal rate, find your path to financial independence.

Annual Expenses

Safe Withdrawal Rate (%)

Current Savings

Expected Annual Return (%)

Results

Enter values and click Calculate to see results

How to Calculate Your FIRE Number

Enter Annual Expenses

Calculate your total yearly spending including housing, food, transportation, and discretionary expenses.

Set Withdrawal Rate

Choose your safe withdrawal rate (typically 4%) based on the Trinity Study research.

Get Your FIRE Timeline

See your target net worth and estimated years until financial independence.

Why Use This FIRE Number Calculator

4% Rule Based

Uses the widely-accepted 4% safe withdrawal rate from the Trinity Study for conservative retirement planning.

Timeline Projections

Calculates years to FIRE based on your current savings and expected investment returns.

Savings Gap Analysis

Shows exactly how much more you need to save to reach financial independence.

Customizable Returns

Adjust expected annual returns based on your investment strategy and risk tolerance.

FIRE Number by Annual Expenses

Annual Expenses	FIRE Number (4%)	FIRE Number (3.5%)
$30,000	$750,000	$857,143
$40,000	$1,000,000	$1,142,857
$50,000	$1,250,000	$1,428,571
$60,000	$1,500,000	$1,714,286
$80,000	$2,000,000	$2,285,714

Frequently Asked Questions

What is the FIRE number formula?

FIRE Number = Annual Expenses / Withdrawal Rate. With a 4% withdrawal rate, multiply your annual expenses by 25. For example, if you spend $50,000/year, your FIRE number is $1,250,000.

Is the 4% rule still valid in 2026?

The 4% rule remains a solid starting point, though some experts suggest 3.5% for early retirees with 50+ year horizons. Lower withdrawal rates provide more safety against sequence of returns risk.

How long does it take to reach FIRE?

Timeline depends on your savings rate. At a 50% savings rate with 7% real returns, expect 15-17 years. At 30% savings, plan for 25-30 years. Use this calculator to see your personalized timeline.

What's the difference between LeanFIRE and FatFIRE?

LeanFIRE targets $25,000-40,000 annual expenses (minimal lifestyle). Regular FIRE targets $40,000-80,000. FatFIRE targets $80,000+ for a more luxurious retirement. Your FIRE number scales accordingly.

Should I include Social Security in FIRE calculations?

Many FIRE calculators exclude Social Security for conservatism. However, you can reduce your FIRE number by the present value of expected SS benefits if you plan to claim them.

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