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FIRE Calculator

Calculate your Financial Independence, Retire Early (FIRE) number and find out when you can stop working.

Your Details

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Your FIRE Age

52

22 years from now

FIRE Number

$1,500,000

Savings Rate

40.0%

Annual Savings

$40,000

Lean FIRE Number

$1,200,000

Fat FIRE Number

$2,250,000

Coast FIRE Age

39

Savings Growth vs FIRE Target

FIRE: $1,500,000
Age 30Age 52
Base SavingsContributionsInvestment ReturnsFIRE Target

Understanding the 4% Rule

The 4% rule is a widely used guideline for retirement withdrawals. It suggests that if you withdraw 4% of your portfolio in the first year of retirement and adjust for inflation each year after, your savings should last at least 30 years. Your FIRE Number is calculated by dividing your annual expenses by your chosen withdrawal rate. While the 4% rule is a helpful starting point, consider your personal circumstances, risk tolerance, and potential changes in expenses when planning for financial independence.

Frequently Asked Questions

What is FIRE (Financial Independence, Retire Early)?
FIRE is a financial movement focused on aggressive saving and investing to achieve financial independence and the option to retire much earlier than traditional retirement age. The core idea is to save a large portion of your income, invest it wisely, and build a portfolio large enough to sustain your living expenses indefinitely through investment returns.
What is the 4% rule?
The 4% rule is a guideline from the Trinity Study that suggests you can safely withdraw 4% of your investment portfolio in the first year of retirement, then adjust that amount for inflation each year, and your money should last at least 30 years. Your FIRE Number is calculated as your annual expenses divided by 0.04 (or your chosen withdrawal rate).
What is the difference between Lean FIRE, Fat FIRE, and Coast FIRE?
Lean FIRE means retiring with a minimal budget, typically covering only essential expenses. Fat FIRE means accumulating enough wealth to maintain a more comfortable or luxurious lifestyle in retirement. Coast FIRE is the point where your existing investments will grow to your FIRE number by traditional retirement age without any additional contributions, meaning you only need to cover current expenses.
Why is the savings rate so important for FIRE?
Your savings rate is the most powerful lever in reaching FIRE. A higher savings rate both increases the amount you invest each year and simultaneously lowers the annual expenses you need to cover in retirement, which reduces your FIRE number. For example, someone saving 50% of their income will reach FIRE dramatically faster than someone saving 20%, even with the same income.
How does this FIRE calculator account for inflation?
The calculator adjusts your expenses and FIRE number for inflation over time. This means your FIRE number reflects the actual purchasing power you will need in the future, not just today's dollars. The real rate of return used is your expected return rate minus the inflation rate.

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