Formula Library
FIRE Formulas
Financial Independence, Retire Early formulas for calculating your FIRE number and time to financial independence.
FIRE Number Calculator
beginnerCalculate your Financial Independence Retire Early target based on annual expenses.
=annual_expenses * 25 Years to Financial Independence
intermediateCalculate how many years until you reach your FIRE number based on savings rate and returns.
=NPER(return_rate, -annual_savings, -current_savings, fire_number)