FIRE Calculator (Financial Independence)

The **FIRE movement** (Financial Independence, Retire Early) relies on simple mathematical relationships between your savings rate, annual investment returns, and annual expenses. The primary catalyst to retiring early is not your salary, but your **Savings Rate** (the percentage of income you save).

The Core Math Concepts

• The 4% Rule (Safe Withdrawal Rate): Studies (like the famous Trinity Study) show that you can safely withdraw 4% of your starting retirement portfolio (adjusted annually for inflation) without running out of money over a 30-year horizon. This corresponds to needing a portfolio that is **25 times your annual expenses** (1 / 0.04 = 25).
• LeanFIRE vs FatFIRE: LeanFIRE is early retirement with a minimalist lifestyle (typically expenses under $40,000/yr). FatFIRE is early retirement with an abundant or luxurious lifestyle (expenses over $100,000/yr).
• CoastFIRE: This is a powerful milestones concept. If you achieve CoastFIRE, you have enough in your investment accounts *today* that, without saving another cent, compounding will grow your nest egg to your target FIRE number by your retirement age. Once reached, you can work a lower-stress job that simply covers your day-to-day bills.

How to Accelerate Your FIRE Journey

You can speed up your journey to financial independence in three primary ways:

1. Reduce Retirement Expenses: Since your FIRE target is equal to 25x your annual expenses, reducing your spending directly slashes your target nest egg by $25,000 for every $1,000 you shave off your annual retirement budget.
2. Increase Your Savings Rate: Going from a 10% savings rate to a 50% savings rate cuts your working career down from 51 years to just 17 years.
3. Optimize Your Investment Strategy: Using rules-based, quantitative portfolios (like those in our **Catalog**) aims to maximize long-term compound annual growth (CAGR) while mitigating drawdowns, directly compounding your savings faster.