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A Health Savings Account (HSA) is the only account in the U.S. tax code that gives you a triple tax advantage. Contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are also tax-free. For many people, it is the most powerful savings vehicle available after maxing out their 401(k).
Rates and figures as of May 2026.
What Is an HSA?
An HSA is a tax-advantaged savings account specifically for healthcare expenses. You can use HSA funds to pay for qualified medical expenses — doctor visits, prescriptions, dental care, vision care, and many other healthcare costs — completely free of tax.
The key restriction: you must be enrolled in a High Deductible Health Plan (HDHP) to open and contribute to an HSA.
The Triple Tax Advantage
HSAs offer three separate tax benefits, making them uniquely powerful:
- Tax-deductible contributions: Contributions reduce your taxable income dollar for dollar. If you are in the 22% tax bracket and contribute $4,300, you save approximately $946 in federal income tax.
- Tax-free growth: Once your HSA balance reaches a threshold (typically $1,000–$2,000), most HSA providers let you invest the excess in mutual funds or ETFs. All investment gains are completely tax-free.
- Tax-free withdrawals: Withdrawals for qualified medical expenses are never taxed, at any age.
No other account — not a 401(k), Roth IRA, or traditional IRA — offers this combination. A 401(k) gives you two of the three (pre-tax contributions and tax-deferred growth, but taxed withdrawals). A Roth IRA gives you two (after-tax contributions, but tax-free growth and withdrawals). An HSA gives you all three.
HSA Contribution Limits 2026
| Coverage Type | 2026 Contribution Limit |
|---|---|
| Self-only HDHP coverage | $4,300 |
| Family HDHP coverage | $8,550 |
| Catch-up contribution (age 55+) | Additional $1,000 |
Contributions can come from you, your employer, or both — but the total cannot exceed the annual limit.
What Qualifies as an HDHP?
To open an HSA, your health insurance must be an HSA-qualified High Deductible Health Plan. For 2026, the IRS requires:
| Requirement | Self-Only | Family |
|---|---|---|
| Minimum deductible | $1,650 | $3,300 |
| Maximum out-of-pocket | $8,300 | $16,600 |
Check your insurance card or benefits portal to confirm your plan is HSA-eligible. Many employers label HDHPs as “HSA-compatible” plans.
What Can You Use HSA Money For?
Qualified Medical Expenses (Tax-Free)
- Doctor visits, specialist visits, urgent care
- Prescription medications and over-the-counter drugs
- Dental care: cleanings, fillings, crowns, orthodontia
- Vision care: eye exams, glasses, contact lenses, LASIK
- Mental health services: therapy, psychiatry
- Chiropractic care, acupuncture
- Medical equipment: crutches, wheelchairs, hearing aids
- Long-term care insurance premiums
- COBRA or Medicare premiums (not Medigap)
Non-Medical Expenses
Before age 65: taxable income + 20% penalty. After age 65: taxable income only (no penalty) — same as traditional IRA withdrawals.
HSA as a Retirement Account Strategy
Many financial planners recommend treating an HSA as a secondary retirement account. The strategy:
- Contribute the maximum to your HSA each year
- Pay current medical expenses out of pocket (preserve the HSA for later)
- Invest the HSA balance in low-cost index funds
- Save your medical receipts — you can reimburse yourself for past expenses years or decades later with no deadline
- In retirement, use accumulated HSA funds for Medicare premiums and out-of-pocket healthcare costs tax-free
The average retired couple is estimated to need $315,000 or more for healthcare costs in retirement. An HSA specifically designed to cover these costs, growing tax-free for decades, is a powerful tool.
Where to Open an HSA
Your employer may offer an HSA through their benefits program. You can also open one independently at any major HSA provider if you have an HDHP. Top providers for investment-focused HSAs:
- Fidelity HSA: No fees, excellent investment options (Fidelity index funds), $0 minimum to invest — the top pick for most people
- Lively: No fees, clean interface, Schwab integration for investments
- HSA Bank: Widely used employer-sponsored option with TD Ameritrade for investments
- HealthEquity: Common employer-offered option; investment fees apply
If your employer’s HSA has high fees, you can open a separate HSA at a lower-cost provider and transfer funds once per year.
HSA vs FSA: Key Differences
| Feature | HSA | FSA |
|---|---|---|
| Requires HDHP | Yes | No |
| Funds roll over | Yes — indefinitely | Limited — usually “use it or lose it” (grace period rules vary) |
| Investment option | Yes | No |
| Contribution limit (2026) | $4,300 / $8,550 | $3,300 |
| Portability | Fully portable — stays with you if you change jobs | Generally not portable |
| Triple tax advantage | Yes | Only contribution deduction |
Key Takeaways
- HSAs offer the only triple tax advantage in the U.S. tax code: deductible contributions, tax-free growth, tax-free medical withdrawals
- You need an HDHP to contribute; 2026 limits are $4,300 (self-only) or $8,550 (family)
- HSA funds roll over indefinitely — no “use it or lose it” rule
- Treat your HSA as a long-term investment account, not just a spending account
- Fidelity offers the best HSA for most people: zero fees and excellent investment options