The Mathematics of Financial Independence (FIRE)
The Financial Independence, Retire Early (FIRE) movement relies on fundamental compounding mathematics rather than lottery tickets or speculative gambles. When your invested portfolio generates enough annual cash flow via passive yield and safe capital withdrawals to satisfy your living costs, you are mathematically independent.
For a conventional 4% safe withdrawal rate, your multiplier is 25. If your annual household lifestyle requires $80,000 per year, your target nest egg is $80,000 × 25 = $2,000,000.

