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Tax-accurate retirement calculator with Monte Carlo simulation, Roth conversion optimization, and 17 analysis tools.

Managed Hosting for developers, entrepreneurs, and businesses like yours

Website, pricing, platforms and company facts side by side.
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| Website | coastiq.org | opalstack.com |
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In their own words, as submitted to SaaSHub.


CoastIQ is a tax-accurate retirement planning calculator for iPhone and iPad, built for the FIRE (Financial Independence, Retire Early) community. It answers "Can I actually retire?" with math, not guesses. Unlike calculators that apply a flat tax rate, CoastIQ models the real U.S. tax code —...
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