HSA vs FSA
HSA vs FSA — Which Health Account Wins?
Both are pre-tax. Only the HSA grows tax-free and rolls over forever. The catch: HSA requires an HDHP health plan.
Verdict
If you can pair an HDHP with an HSA, do it — always. The HSA is the most tax-efficient account in the US system. Only choose an FSA if HSA isn’t available or your medical expenses are so predictable that a use-it-or-lose-it makes sense.
Side-by-side comparison
Who should pick HSA
Anyone eligible for an HDHP. Younger / healthier employees with low expected expenses. High earners using HSA as a stealth retirement account (invest, pay out of pocket, reimburse later).
Who should pick FSA
Anyone with predictable annual medical/dental/vision expenses (orthodontia, planned surgery, daycare via DCFSA). Anyone whose employer doesn’t offer an HDHP.
Related tools
Disclaimer. Comparison numbers depend on your tax bracket, state, and time horizon. Educational only — not personalized financial advice. See our Financial Disclaimer.