Free, open-source calculator for the Health Savings Account triple tax advantage — first-year tax savings (federal + state + FICA) plus decades of tax-free growth — using the official IRS 2026 contribution limits (Rev. Proc. 2025-19: self-only $4,400, family $8,750, 55+ catch-up $1,000).
Live tool: https://spotclips.github.io/hsa-tax-savings-calculator/
Part of the free insurance calculators from TheInsurance.Guide.
Single static index.html, no dependencies, no tracking. Educational estimate only — not tax, legal, investment, or insurance advice. MIT licensed.