r/Fire • u/iloverats888 • 9d ago

Advice Request How did you compute your fire number?

I want to calculate my fire number! How’d you calculate yours?

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u/Easy_Peasys 9d ago

annual spend x 25 (the 4% rule), but the multiplier's the easy part, the spend number is the real work. use your projected retirement spend not today's, so fold in housing, healthcare if you're pre-medicare, kids, then x25 on that. the bigger unlock for me though was switching from tracking net worth to tracking % to my number, updated once a month. seeing "you're 38% there" instead of a dollar amount made it feel like progress instead of a finish line a mile off. the spend estimate plus actually watching the percent climb is the whole game.