What is an HSA (Health Savings Account)
An HSA (Health Savings Account) is a tax-advantaged savings account available to people enrolled in a high-deductible health plan, used to pay for qualified medical expenses with triple tax benefits.
An HSA, or Health Savings Account, is a special savings account available exclusively to people enrolled in a High-Deductible Health Plan (HDHP). It is one of the most tax-efficient accounts in the entire U.S. tax code — often described as a "triple tax advantage" account — and is widely underutilized by those who qualify for it.
The Triple Tax Advantage
- Contributions are tax-deductible (or pre-tax if made through payroll) — they reduce your taxable income in the year you contribute
- Growth is tax-free — any interest, dividends, or investment gains inside the account are not taxed
- Withdrawals are tax-free — when used for qualified medical expenses
This combination makes the HSA more tax-efficient than either a 401(k) or a Roth IRA for health-related spending — and, after age 65, the HSA functions essentially like a Traditional IRA for non-medical expenses.
2025 Contribution Limits
| Coverage Type | Annual Limit |
|---|---|
| Self-only | $4,300 |
| Family | $8,550 |
| Catch-up (age 55+) | +$1,000 |
Contributions can come from you, your employer, or both — but the combined total cannot exceed the annual limit.
What Counts as a Qualified Medical Expense?
The IRS maintains a broad list of qualifying expenses, including:
- Deductibles, copays, and coinsurance
- Prescription medications
- Dental and vision care
- Mental health services
- Certain medical equipment and supplies
- LASIK eye surgery
- Long-term care insurance premiums (within limits)
Over-the-counter medications and menstrual products also qualify following the CARES Act of 2020.
The HSA as a Retirement Vehicle
A lesser-known use of the HSA: invest the funds (most HSA providers allow investing once a minimum cash balance is maintained) and let them grow for decades. If you can afford to pay medical expenses out of pocket now and let the HSA compound, you can withdraw the funds tax-free in retirement for any medical expense — which represents a significant portion of retiree spending.
After age 65, HSA funds can be withdrawn for any purpose. Non-medical withdrawals will be subject to ordinary income tax (same as a Traditional IRA), but there's no penalty. This makes a fully funded HSA a versatile retirement account.
HSA Rollover Rules
Unlike a Flexible Spending Account (FSA), HSA funds roll over indefinitely — there is no "use it or lose it" rule. Balances carry forward year after year, which is why the long-term investment strategy is viable.
Choosing an HSA Provider
If your employer doesn't offer a competitive HSA (or charges high fees), you can open an HSA at a third-party provider. Fidelity is widely considered one of the best HSA providers due to zero account fees and access to low-cost index funds for investing your balance.
Is an HSA Right for You?
To qualify, you must:
- Be enrolled in an HDHP (2025: minimum deductible of $1,650 for self-only, $3,300 for family)
- Not be covered by any other health plan
- Not be enrolled in Medicare
- Not be claimed as a dependent on someone else's tax return
If you're generally healthy and can manage your current healthcare costs, pairing an HDHP with an HSA and investing the contributions for the long term is one of the most powerful financial moves available.