About PlanWise

PlanWise is an independent reference site covering US health plans and tax-advantaged health accounts (HSA, FSA, HDHP, Medicare). We build free, fast calculators that help you understand HSAs, FSAs, high-deductible health plans, and Medicare costs using the official 2026 figures.

What we do

We turn the latest IRS and CMS numbers into clear, interactive tools and plain-English guides. Every calculator runs entirely in your browser, shows the formula behind it, and links the primary source — IRS Rev. Proc. 2025-19 for HSA/HDHP limits, IRS Rev. Proc. 2025-32 for the FSA limit, and CMS for Medicare premiums and IRMAA.

Our editorial standards (E-E-A-T)

• Sourced. Every dollar figure is attributed to a named, dated government source.
• Transparent. Calculator formulas and assumptions are stated on each tool page and in our methodology.
• Current. Pages carry a visible "data as of" date and are refreshed when the IRS and CMS publish new figures (typically annually).
• Honest about limits. Our tools produce estimates, not official determinations.

Important: this is not professional advice

Health insurance and taxes are high-stakes, personal decisions. Nothing on PlanWise is medical, tax, insurance, legal, or financial advice. Our outputs are estimates for general education only. Always confirm figures with the primary source and consult a qualified professional before acting. See our full disclaimer.

Contact

Questions or corrections? Get in touch — we welcome source-backed fixes.