Buy The Haystack — Tools
FIRE Number Calculator
Find out exactly how much you need to retire — and how far away you are from getting there.
The FIRE number is the amount you need invested to retire and never run out of money. It's based on the 4% rule — a guideline from the Trinity Study showing that withdrawing 4% of your portfolio annually has historically lasted 30+ years. Your FIRE number = annual expenses × 25.
Your Details
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What you plan to spend per year in retirement
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401k, IRA, brokerage — anything invested
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How much you add to investments each year
Not financial advice — just the data. | Back to Tools | BuyTheHaystack.com