Calculate when you can retire early based on savings rate, investments, and the 4% rule.
Financial Independence, Retire Early (FIRE) is based on accumulating 25x your annual expenses (the inverse of the 4% safe withdrawal rate). Once your portfolio reaches that number, you can live off investment returns indefinitely.
The higher your savings rate, the fewer years to FIRE — someone saving 50% of income reaches FI in roughly 17 years regardless of income level.