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@coastfirehub

CoastFIRE Hub

Free FIRE calculator toolkit — Coast FIRE, Barista FIRE, Fat FIRE

CoastFIRE Hub

Free FIRE calculator toolkit at coastfirehub.com.

Tools

Financial Assumptions

All calculators use consistent, source-backed assumptions:

Parameter Default Source
Real return rate 7% S&P 500 historical avg minus 3% inflation
Safe Withdrawal Rate 4% Trinity Study (1998)
Inflation 3% US historical average
Retirement age (examples) 65 Gallup 2023

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    Find your Coast FIRE number instantly. Real-time calculator right in your browser toolbar. No accounts, no loading screens.

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    Free, open-source FIRE calculator. Find your Coast FIRE number — how much to invest today so compound interest does the rest. Zero dependencies.

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