🔥 Complete FIRE Investing Guide: 4% Rule & Financial Independence
Everything you need to know about achieving Financial Independence, Retire Early — from calculating your FIRE number to building a practical investment strategy.
What is FIRE?
FIRE (Financial Independence, Retire Early) is a financial lifestyle movement where the goal is to accumulate enough assets to live off investment returns — without needing to work for money. The "Retire Early" part doesn't necessarily mean doing nothing; it means having the freedom to choose how you spend your time.
The 4 Types of FIRE
🥗 Lean FIRE
Extreme frugality with minimal lifestyle budget
💎 Fat FIRE
Larger portfolio for a comfortable lifestyle
☕ Barista FIRE
Semi-retirement with part-time income supplementing portfolio
🏄 Coast FIRE
Enough invested that compound growth handles the rest
The 4% Rule: Core of FIRE
The 4% safe withdrawal rate comes from the 1998 Trinity Study. Researchers found that withdrawing no more than 4% of your portfolio annually gave a very high probability of the portfolio lasting 30+ years, even through market downturns.
💡 FIRE Number Formula
FIRE Number = Annual Expenses × 25
(= Annual Expenses ÷ 0.04)
🧮 When Can You Reach Financial Independence?
Calculate your path to financial freedom based on your income and expenses.
3-Step FIRE Roadmap
Maximize Your Savings Rate (Target: 50%+)
Your savings rate is the single biggest lever for FIRE speed. A 50% savings rate → ~17 years to FIRE. 75% → ~7 years. Cutting expenses and growing income both matter.
Build a Long-Term Investment Portfolio
Index funds (S&P 500, global ETFs) are the backbone of most FIRE portfolios. The goal is to maximize compound growth over 10-20 years, not short-term gains.
Track Cash Flow Rigorously
You cannot hit a target you cannot see. Track every dollar of income and expense, calculate your savings rate monthly, and adjust. This is where Finbook helps most.
Calculate Your FIRE Date Now
Enter your current savings, income, expenses, and expected return — and our FIRE calculator will tell you exactly when you can retire. Based on the 4% rule with customizable parameters.
🧮 When Can You Reach Financial Independence?
Calculate your path to financial freedom based on your income and expenses.
