FIRE Calculator
Calculate when you can achieve Financial Independence and Retire Early. Enter your income, expenses, savings, and investment returns to see your FIRE date.
How the FIRE Movement Works
FIRE (Financial Independence, Retire Early) is based on a simple principle: save and invest aggressively until your investment portfolio generates enough passive income to cover your living expenses forever. The standard target is 25 times your annual expenses, based on the "4% rule" from the Trinity Study. This means if you spend $40,000 per year, you need $1,000,000 invested to achieve FIRE. The higher your savings rate, the faster you reach FIRE — someone saving 50% of their income can retire in roughly 17 years regardless of salary level, while someone saving 25% takes about 32 years.
Types of FIRE: Lean, Fat, Barista, and Coast
Lean FIRE means achieving financial independence on a minimal budget, typically under $40,000/year in expenses. Fat FIRE targets a more comfortable lifestyle with $100,000+ in annual spending. Barista FIRE means having enough invested that you only need a low-stress part-time job to cover remaining expenses and health insurance. Coast FIRE means you have enough saved that compound growth alone will reach your retirement target by traditional retirement age — you still work but no longer need to save. Each variation makes the FIRE concept accessible at different income levels and lifestyle preferences.
The 4% Rule and Safe Withdrawal Rates
The 4% rule suggests you can withdraw 4% of your portfolio in the first year of retirement and adjust for inflation annually with a very low chance of running out of money over 30 years. For early retirees with 40-50 year horizons, many experts recommend a more conservative 3.5% or even 3% withdrawal rate. Your FIRE number equals your annual expenses divided by your withdrawal rate: $50,000 / 0.04 = $1,250,000. At 3.5%, the same expenses require $1,428,571. The difference is meaningful but provides extra safety for decades-long retirements.
How to Increase Your Savings Rate
Your savings rate is the single most important variable in the FIRE equation. Housing is typically the largest expense — house hacking, geographic arbitrage, or downsizing can free up 20-30% of income. Transportation is second — driving used cars, biking, or using public transit saves significantly. Food is third — meal prepping and reducing dining out saves hundreds monthly. On the income side, negotiating raises, switching jobs every 2-3 years, and developing side income streams all accelerate FIRE. Even small improvements compound dramatically: increasing your savings rate from 20% to 30% can cut years off your timeline.