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Authentae
Solo maker · tax tools for tech workers
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Mathstub
Free tax calculators for tech workers with equity comp
May 2026
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Joined Product Hunt
May 10th, 2026
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Authentae
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8d ago
Mathstub - Free tax calculators for tech workers with equity comp
RSU, ESPP, ISO/AMT, quarterly estimated tax, and a 50-state stock-comp lookup. Free, no signup, math straight from IRS publications. The calculators run client-side; no data leaves your browser.
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