What Is a Health Savings Account (HSA)?
In plain English
A Health Savings Account (HSA) is a tax-advantaged account available to individuals enrolled in a high-deductible health plan (HDHP). Contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free — making the HSA the only triple-tax-advantaged account in the U.S. tax code. Funds roll over year to year and remain yours permanently.
What Are the Tax Advantages of an HSA?
HSAs offer a rare triple tax benefit: contributions are tax-deductible (or pre-tax via payroll), investment growth within the account is tax-free, and withdrawals for qualified medical expenses are completely tax-free. This makes HSAs more tax-efficient than 401(k)s or IRAs for healthcare spending. After age 65, withdrawals for non-medical expenses are taxed like traditional IRA withdrawals without penalty.
What Can You Use HSA Funds For?
HSA funds can be used tax-free for a wide range of qualified medical expenses including deductibles, copays, coinsurance, prescription drugs, dental care, vision care, mental health services, and many over-the-counter medications. Non-qualified withdrawals before age 65 are subject to income tax plus a 20% penalty. A full list of qualified expenses is in IRS Publication 502.
How Can an HSA Serve as a Retirement Account?
Many financial advisors recommend maximizing HSA contributions and investing them in index funds, paying current medical expenses out of pocket, and saving receipts. Since there's no time limit to reimburse yourself, you can withdraw accumulated funds years later for past medical expenses tax-free. This strategy effectively turns the HSA into a powerful supplemental retirement account with one of the most favorable tax treatments available.
Frequently asked questions
What are the HSA contribution limits?
The IRS sets annual HSA contribution limits that adjust for inflation. For 2026, individual HDHP coverage allows contributions up to the current IRS limit, and family coverage allows a higher limit. Individuals over age 55 can make additional catch-up contributions. Contributions from both you and your employer count toward the annual limit.
Can I use my HSA to pay insurance premiums?
Generally no — health insurance premiums are not considered qualified medical expenses for HSA purposes. Exceptions include COBRA premiums, long-term care insurance premiums (subject to age-based limits), and Medicare premiums. This is a common misconception that can result in unexpected taxes and penalties.
Keep exploring
Related terms
Flexible Spending Account (FSA)
A Flexible Spending Account (FSA) is an employer-sponsored account that lets you set aside pre-tax dollars for qualified medical or dependent care expenses. Unlike an HSA, most FSA funds must be used by year-end.
Insurance Deductible
A deductible is the amount you pay out of pocket before your insurance starts covering costs. Choosing a higher deductible typically lowers your monthly premium.
Out-of-Pocket Maximum
The out-of-pocket maximum is the most you will pay for covered healthcare in a plan year before your insurance covers 100% of costs. It includes deductibles, copays, and coinsurance.
HMO vs. PPO
HMOs and PPOs are two common types of health insurance plans that differ in network flexibility and cost structure. HMOs are typically cheaper but more restrictive, while PPOs offer more provider choice at a higher price.
Dental Insurance
Dental insurance helps cover the cost of routine dental care, fillings, and major procedures like crowns or root canals. Most plans use a 100/80/50 structure based on the type of care received.