A Health Savings Account (HSA) is a tax-advantaged account designed to help people with high-deductible health plans (HDHPs) save for medical expenses. It is one of the most powerful tools in personal finance — offering a triple tax advantage that no other account can match.
The Triple Tax Advantage
HSAs offer three separate tax benefits:
- Contributions are tax-deductible: Money you put into an HSA reduces your taxable income, just like a traditional IRA
- Growth is tax-free: Any investment earnings inside the HSA are not taxed
- Withdrawals for qualified medical expenses are tax-free: You pay nothing when you use the money for eligible healthcare costs
No other account — not a 401(k), not a Roth IRA — offers all three tax benefits simultaneously.
2026 HSA Contribution Limits
For 2026, the IRS allows:
- Individual coverage: $4,300
- Family coverage: $8,550
- Catch-up contribution (age 55+): Additional $1,000
Contributions can be made by you, your employer, or both — as long as the combined total does not exceed the annual limit.
Who Is Eligible for an HSA?
To open and contribute to an HSA, you must:
- Be enrolled in a qualified High-Deductible Health Plan (HDHP)
- Not be covered by any other health plan that is not an HDHP (with limited exceptions)
- Not be enrolled in Medicare
- Not be claimed as a dependent on someone else’s tax return
For 2026, an HDHP is defined as a plan with a minimum deductible of $1,650 for individuals or $3,300 for families.
What Expenses Qualify?
HSA funds can be used tax-free for a wide range of medical, dental, and vision expenses, including:
- Doctor visits, surgeries, and hospital stays
- Prescriptions and over-the-counter medications
- Dental care (cleanings, fillings, braces)
- Vision care (glasses, contacts, LASIK)
- Mental health services
- Hearing aids
Using Your HSA as a Retirement Account
Here is the strategy many financial planners recommend: pay medical expenses out of pocket now, save your receipts, invest your HSA contributions in index funds, and let the account grow for decades. After age 65, you can withdraw HSA funds for any reason without penalty — you will just owe ordinary income tax on non-medical withdrawals, exactly like a traditional IRA. For medical expenses in retirement (which are among the largest costs retirees face), withdrawals remain tax-free forever.
HSA vs. FSA: Key Differences
A Flexible Spending Account (FSA) is a similar but distinct account. Key differences:
- Rollover: HSA funds roll over year to year with no limit. Most FSAs have a “use it or lose it” rule
- Portability: HSAs are yours permanently; FSAs are tied to your employer
- Investment options: HSAs can be invested; FSAs generally cannot
- Eligibility: HSAs require an HDHP; FSAs do not
Where to Open an HSA
If your employer offers an HSA, start there — many employers contribute free money to your account. If not, or if you want better investment options, you can open an HSA directly with providers like Fidelity, Lively, or HSA Bank. Fidelity’s HSA is particularly strong because it charges no fees and offers access to a full investment menu.
Bottom Line
If you have an HDHP and are not using an HSA, you are leaving one of the best tax breaks in the tax code on the table. Max out your HSA before contributing extra to a traditional brokerage account. The triple tax advantage makes it uniquely powerful for both healthcare costs today and retirement savings tomorrow.
Related: What Is a Flexible Spending Account (FSA)? 2026 Guide