Saving & investing
FIRE Calculator
Spending is the real lever
The number that decides your FIRE target is not your income, it is your spending. Because the goal is 25 times what you spend, trimming your yearly costs does two things at once: it lowers the finish line and it frees up more to invest, so the gap closes from both sides. Someone who lives on $40,000 needs a million; someone who lives on $80,000 needs two. The 4% rule this is based on is a guideline drawn from historical returns, not a guarantee, and early retirees often keep a cushion or stay flexible. Use this to see the shape of the goal, then plan with a real budget.
Based on the 4% rule and a 7% average return. Not financial advice.
Common questions
What is a FIRE number?
Roughly what you would need invested to live off the returns, commonly 25 times your yearly spending. Spend $50,000 a year and the number is about $1.25 million.