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CoastIQ
The only retirement calculator that gets your taxes right
CoastIQ is a retirement planning calculator built for the FIRE community. Unlike every other calculator that uses flat tax estimates, CoastIQ models your actual taxes — marginal federal brackets, capital gains stacking, Social Security taxation, NIIT, FICA, IRMAA, and state-level taxes. Features Monte Carlo simulation with 1,000+ parallel trials, Roth conversion optimizer, historical backtesting since 1871, and 17 analysis tools. 100% on-device — no cloud, no accounts, no data collection.
Hey Product Hunt! I built CoastIQ because every retirement calculator I tried used flat tax estimates — and the numbers were always wrong. As someone pursuing FIRE, I needed projections I could actually trust.
CoastIQ models your real tax situation: marginal federal brackets, capital gains stacking on top of ordinary income, Social Security taxation thresholds, NIIT, IRMAA, and state taxes. It runs 1,000+ Monte Carlo trials with correlated returns, backtests against every retirement year since 1871, and includes a Roth conversion optimizer that respects ACA and IRMAA cliffs.
17 analysis tools total — from Social Security optimization to geographic arbitrage to estate planning. Everything runs on-device with zero data collection.
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About CoastIQ on Product Hunt
“The only retirement calculator that gets your taxes right”
CoastIQ was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #6 on the daily leaderboard. CoastIQ is a retirement planning calculator built for the FIRE community. Unlike every other calculator that uses flat tax estimates, CoastIQ models your actual taxes — marginal federal brackets, capital gains stacking, Social Security taxation, NIIT, FICA, IRMAA, and state-level taxes. Features Monte Carlo simulation with 1,000+ parallel trials, Roth conversion optimizer, historical backtesting since 1871, and 17 analysis tools. 100% on-device — no cloud, no accounts, no data collection.
CoastIQ was featured in Productivity (653.8k followers) and Fintech (47.1k followers) on Product Hunt. Together, these topics include over 156.3k products, making this a competitive space to launch in.
Who hunted CoastIQ?
CoastIQ was hunted by Vlad. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how CoastIQ stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Vlad