FIRE Calculator
Calculate when you can achieve Financial Independence and Retire Early
FIRE Number
$1,250,000
25x annual expenses
Years to FIRE
17
at current savings rate
FIRE Age
47
years old
CoastFIRE Number
$117,078.674
Stop saving now, retire at 65
Annual Savings
$32,000
40% of income
Ways to Accelerate Your FIRE Journey:
- Increase savings rate by 10% → FIRE in 15 years
- Reduce expenses by 20% → FIRE number: $1,000,000
- Side hustle earning $20k/year → FIRE in 15 years
FIRE is a movement focused on extreme savings and investment to achieve financial independence and retire early. The core principle is saving 50-70% of income and investing aggressively to build a portfolio that can sustain your lifestyle indefinitely.
Formula:
FIRE Number = Annual Expenses × 25 (4% Rule)The 4% rule suggests you can safely withdraw 4% of your portfolio annually without running out of money over a 30-year retirement.
- 1
Calculate your annual expenses (current or target lifestyle)
- 2
Multiply by 25 to get your FIRE number
- 3
Enter your current savings and investments
- 4
Input your monthly savings rate
- 5
Set expected investment returns
- 6
See your projected FIRE date
- Provides a clear, mathematical path to early retirement
- Higher savings rate dramatically accelerates timeline
- Financial independence provides freedom, even if you keep working
- Forces intentional spending and lifestyle design
- 4% rule provides sustainable withdrawal strategy
- Planning for early retirement
- Calculating your FIRE number
- Comparing impact of different savings rates
- Evaluating whether to Coast FIRE
- Planning major life changes
- Stress-testing retirement plans
- •Focus on savings rate, not just dollar amount
- •Consider part-time work to reduce sequence risk
- •Build in flexibility for unexpected expenses
- •Geographic arbitrage can dramatically reduce your FIRE number
Have questions about using this calculator? Check out our financial guides or contact us for help.
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Frequently Asked Questions
What is FIRE (Financial Independence, Retire Early)?
FIRE is a movement focused on extreme savings and investment to achieve financial independence and retire much earlier than traditional retirement age. The goal is to accumulate enough wealth to live off investment returns indefinitely, giving you the freedom to work optionally.
What is a FIRE number?
Your FIRE number is the amount of money you need invested to retire. It's typically calculated as 25x your annual expenses (based on the 4% rule). For example, if you spend $40,000/year, your FIRE number is $1,000,000. This amount should sustain you indefinitely.
What is the 4% rule?
The 4% rule (from the Trinity Study) suggests you can safely withdraw 4% of your portfolio in year one of retirement, then adjust for inflation each year. Historically, this has a high success rate of lasting 30+ years. Some FIRE adherents use 3.5% for more safety.
What is CoastFIRE?
CoastFIRE means you've saved enough that if you stopped contributing today, your investments would grow to your FIRE number by traditional retirement age (65). At this point, you only need to cover current expenses, not save for retirement.
How does savings rate affect FIRE timeline?
Savings rate has a dramatic impact on FIRE timeline. At 10% savings rate, FIRE takes ~50 years. At 50% savings rate, it takes ~17 years. At 75% savings rate, it takes ~7 years. Higher savings rate means both more invested AND lower expenses (smaller FIRE number).