- Triple tax break: pre-tax contributions, tax-free growth, tax-free withdrawals for qualified medical expenses.
- No use-it-or-lose-it (unlike an FSA). The account is yours if you change jobs.
- After 65 you can withdraw for any purpose and pay only income tax, like a traditional IRA.
- Downside: you pay more before the deductible. Keep enough cash or HSA balance to cover it.
The calculator projects your HSA balance over 10–30 years at the return you choose. Try it. Also see HSA vs FSA.
General education, not insurance, tax or legal advice. Figures from IRS and HHS publications; confirm with your plan documents.