How to Calculate Your FIRE Number (and Why It's Probably Wrong)
The formula is one line: annual expenses × 25. But the number it produces is only as good as the expense estimate you feed it — and that's where most people go wrong.
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Honest math on the strategies people actually ask about — velocity banking, debt payoff, tax, mortgage, salary negotiation. Every claim backed by the numbers.
8 articles
The formula is one line: annual expenses × 25. But the number it produces is only as good as the expense estimate you feed it — and that's where most people go wrong.
Read moreThe "use a HELOC to pay off your mortgage in 5–7 years" strategy has a legitimate kernel and a lot of sales-pitch scaffolding. Here's what's mathematically true, what's a sleight of hand, and what the gurus never mention.
Read moreYou hear your 'tax bracket' is 24%. Then your paycheck says you paid 18%. Both numbers are right — they just answer different questions. Here's why the distinction matters for every pre-tax dollar you contribute.
Read moreCoast FIRE is the point where your investments will grow to your retirement number without any additional contributions. Most people hit it earlier than they think.
Read moreA $10K raise doesn't just mean $10K more this year. Compounded over a career and invested at market returns, it can mean $500K+ in lifetime wealth. Here's the math.
Read moreUsing a line of credit to pay off your mortgage faster sounds too good to be true. We ran the numbers on when it works, when it doesn't, and the breakeven rate that matters.
Read moreMost rent-vs-buy calculators are biased toward buying because they ignore the opportunity cost of your down payment. Here's how to think about it honestly.
Read moreYou've hit your FIRE number but can't pull the trigger. The math says one more year adds a surprising amount of runway — but at what cost?
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