What Is a Health Savings Account (HSA)?
In plain English
A Health Savings Account (HSA) is a tax-advantaged savings account available to people enrolled in a high-deductible health plan (HDHP). Contributions are pre-tax, growth is tax-free, and withdrawals for qualified medical expenses are tax-free — the only account with this triple tax advantage. After age 65, funds can be used for any purpose without penalty.
How Does an HSA Work as a Retirement Account?
After age 65, HSA funds can be withdrawn for any reason without the 20% penalty (though non-medical withdrawals are taxed like traditional IRA distributions). Before that, tax-free withdrawals are limited to qualified medical expenses. Investing your HSA and paying medical bills out of pocket allows the account to compound tax-free — making it a powerful supplement to your 401(k) and IRA.
What Are the HSA Contribution Limits?
For 2026, individuals can contribute up to $4,300 to an HSA, and families can contribute up to $8,550. Those 55 and older can add a $1,000 catch-up contribution. Contributions can be made by you, your employer, or others on your behalf. Unused funds roll over indefinitely — there is no use-it-or-lose-it rule like a Flexible Spending Account.
What Qualifies as an HSA-Eligible Expense?
Qualified medical expenses include deductibles, copays, prescriptions, dental care, vision care, and hundreds of other IRS-approved medical costs. After age 65, you can also pay Medicare premiums with HSA funds tax-free. Keeping receipts for all medical expenses paid out of pocket is important — you can reimburse yourself from your HSA years later, tax-free.
Frequently asked questions
Should I invest my HSA funds?
If you can afford to pay medical bills out of pocket, investing your HSA and letting it grow tax-free is a powerful long-term strategy. Many providers allow you to invest HSA funds once your balance exceeds a threshold. Low-cost index funds are a popular choice for HSA investing.
What happens to my HSA when I turn 65?
At 65, your HSA functions similarly to a traditional IRA for non-medical expenses — withdrawals are taxed but penalty-free. For medical expenses, withdrawals remain completely tax-free. If you enroll in Medicare, you can no longer contribute to an HSA but can continue using existing funds.
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Related terms
401(k)
A 401(k) is an employer-sponsored retirement savings plan that lets you contribute pre-tax dollars, reducing your taxable income today while your investments grow tax-deferred.
Roth IRA
A Roth IRA is an individual retirement account where you contribute after-tax dollars and your investments grow tax-free, with tax-free withdrawals in retirement.
Catch-Up Contributions
Catch-up contributions allow workers aged 50 and older to contribute extra money to retirement accounts beyond standard annual limits, helping them accelerate savings before retirement.
After-Tax Contributions
After-tax contributions are retirement account contributions made with money you've already paid income tax on, which can be converted to Roth accounts for tax-free future growth.
Retirement Income
Retirement income is the money you receive during retirement from sources such as Social Security, pensions, investment withdrawals, and part-time work.