Work out the portfolio needed when part-time income covers some of your spending.
Every unit of ongoing income removes 25 units of required capital at a 4% withdrawal rate. That leverage is why modest part-time earnings shrink the target so dramatically. Earning 18,000 a year reduces the portfolio requirement by 450,000 at a 4% rate, which is often a decade of saving.
Barista FIRE
Barista FIRE number = (expenses − part-time income) ÷ withdrawal rate
Barista FIRE number = (expenses − part-time income) ÷ withdrawal rate Every unit of ongoing income removes 25 units of required capital at a 4% withdrawal rate. That leverage is why modest part-time earnings shrink the target so dramatically.
Earning 18,000 a year reduces the portfolio requirement by 450,000 at a 4% rate, which is often a decade of saving.
This calculator takes 4 inputs: Annual spending, Annual part-time income, Safe withdrawal rate, Current portfolio. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.