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Financial independence
When does 25× your annual expenses (the 4% rule) become reachable from where you are today?
Your FI number
$1.00M
≈ 25× your annual expenses
Reaches FI in 17.7 years at the assumed return and savings rate.
Formula
FI number:
annualExpenses × (1 / withdrawalRate). The 4% rule (Trinity Study) → 25×; a 3.5% rule → ≈ 28.5×. Then forward-simulate monthly compounding and find the first month where balance ≥ FI number.Illustrative only. Calculator outputs assume constant inputs and ignore taxes, fees, inflation, and market volatility unless stated. For research and educational purposes only — not financial advice.