What a Health Savings Account Actually Is

A Health Savings Account (HSA) is a tax-advantaged savings account tied to a high-deductible health insurance plan. Money you put in reduces your taxable income, the money grows tax-free, and withdrawals for medical expenses are not taxed. You own the account and the money stays yours even if you change jobs or insurance plans.

The account is separate from your insurance. Your bank or a financial institution holds it, and you decide how much to contribute each year (up to a limit set by the IRS—$4,150 for individual coverage and $8,300 for family coverage in 2024, though these amounts change annually). You are not required to spend the money in any given year; it rolls over and accumulates like a retirement account.

To open an HSA, you must be enrolled in a high-deductible health plan (HDHP). These plans have lower monthly premiums but higher deductibles—meaning you pay more out of pocket before insurance kicks in. The tradeoff is that the HSA lets you set aside pre-tax dollars to cover those costs.

Key Takeaways

  • An HSA requires enrollment in a high-deductible health plan and lets you contribute pre-tax money that grows tax-free and can be withdrawn tax-free for medical expenses.
  • You can use HSA funds for deductibles, copays, prescriptions, dental work, vision care, and many other medical costs—but not for insurance premiums or over-the-counter medications without a prescription.
  • Money in an HSA is yours to keep; it does not disappear at the end of the year and follows you if you change jobs or insurance.
  • After age 65, you can withdraw HSA funds for any reason without penalty, though non-medical withdrawals are taxed as income.
  • Your employer may contribute to your HSA, and those contributions do not count toward your annual limit.

Who Can Open an HSA and When

You can open an HSA only if you are enrolled in a high-deductible health plan. Your employer may offer one, or you can purchase one on the individual market through your state's health insurance marketplace or directly from an insurer. You cannot have other health coverage at the same time—no spouse's plan, no Medicare, no Medicaid—though there are narrow exceptions for specific types of coverage like dental-only or vision-only plans.

You can open an HSA at any time during the year you are covered by an HDHP. If you enroll in an HDHP in March, you can open an account in March and contribute for the full calendar year. The contribution deadline is usually April 15 of the following year (the same as the tax filing deadline), so you have several months after the calendar year ends to fund an account for that year.

If you are covered by an HDHP for only part of the year, your contribution limit is reduced proportionally. If you lose HDHP coverage mid-year, you can still keep the account and withdraw money for medical expenses, but you cannot add new contributions.

What Medical Expenses You Can Pay With HSA Money

HSA funds can cover a broad range of medical costs. The IRS publishes a list of may have access to medical expenses, which includes deductibles and copays, prescription medications, insulin, dental work (fillings, root canals, orthodontics), vision care (glasses, contacts, exams), hearing aids, mental health counseling, physical therapy, and surgery. You can also use HSA money to pay for medical equipment like crutches, wheelchairs, or blood pressure monitors.

Over-the-counter medications—like ibuprofen, cold medicine, or antacids—are not covered unless you have a prescription from a doctor. Vitamins and supplements are generally not covered. Health insurance premiums themselves are not covered, with one exception: if you are receiving unemployment benefits, you can use HSA funds to pay for COBRA continuation coverage or other health insurance while unemployed.

The key rule is that the expense must be for diagnosis, treatment, or prevention of a medical condition. Cosmetic procedures, gym memberships, and general wellness products do not may have access to. If you are unsure whether a specific expense qualifies, you can check the IRS Publication 502 or ask your HSA provider.

How Contributions Work and Tax Benefits

You can contribute to an HSA in several ways. If your employer offers an HSA, they may deduct contributions directly from your paycheck before taxes are calculated—this is the most common method and saves you both income tax and payroll tax (Social Security and Medicare tax). If you contribute on your own, you deduct the amount on your tax return, which reduces your taxable income.

Your employer can also contribute to your HSA on your behalf. These employer contributions do not count toward your annual contribution limit; only your own contributions count. So if your employer puts $1,000 into your account and you contribute $3,150 (the remaining individual limit for 2024), you have contributed the full $4,150 allowed.

You can change your contribution amount or stop contributing at any time during the year. If you over-contribute, you can withdraw the excess before the tax filing deadline and avoid penalties. If you do not withdraw the excess, you will owe income tax plus a 6% penalty on the overage.

How to Use HSA Money and Track Withdrawals

Most HSA providers issue a debit card linked to the account, so you can pay for medical expenses directly at the point of care—at a pharmacy, doctor's office, or hospital. Some providers also let you submit receipts and request reimbursement. Keep all receipts and documentation for medical expenses you pay with HSA funds, because the IRS can audit your account and ask you to prove that withdrawals were for may have access to expenses.

When you withdraw money for a may have access to medical expense, that withdrawal is tax-free. You do not need to report it on your tax return unless the IRS questions it. If you withdraw money for a non-medical reason before age 65, you owe income tax on the withdrawal plus a 20% penalty.

After age 65, the rules change. You can withdraw HSA funds for any reason without the 20% penalty. Non-medical withdrawals are taxed as ordinary income, but medical withdrawals remain tax-free. This makes an HSA function like a retirement account after 65, similar to a traditional IRA.

What Happens to Your HSA When You Change Jobs

Your HSA is yours to keep. If you leave your job, the account does not close and the money does not disappear. You can continue to use the funds for medical expenses, and you can continue to make contributions if you remain enrolled in an HDHP (whether through a new employer, a spouse's plan, or the individual market).

Some employers use a third-party HSA administrator, and some use their own payroll system. When you leave, contact your former employer's HR department or the HSA provider to confirm the account is in your name and to get the account number and provider contact information. You may need to update your address and banking information.

If your new employer offers an HSA with a different provider, you can keep both accounts open or roll the old account into the new one. A rollover is a direct transfer from one HSA to another and does not trigger taxes or penalties. You can perform one HSA-to-HSA rollover per 12-month period.

Investment Options and Account Growth

Many HSA providers let you invest the money in mutual funds, stocks, or other securities, similar to a 401(k) or IRA. This means your HSA balance can grow beyond what you contribute. Investment earnings are tax-free, and you can withdraw the gains tax-free if you use them for medical expenses.

Not all HSA providers offer investment options; some keep the money in a cash account earning minimal interest. If investment growth matters to you, compare providers before opening an account. Be aware that if you invest HSA money and the market declines, your balance could drop. You can usually switch between cash and investments within the same account.

Some people use an HSA as a long-term savings vehicle, contributing the maximum each year and paying for medical expenses out of pocket. This strategy lets the account grow for decades and can be withdrawn tax-free in retirement for medical costs, which tend to be substantial.

Frequently Asked Questions

Can I use my HSA to pay my insurance deductible?

Yes. Your deductible is a may have access to medical expense, so you can use HSA funds to pay it. This is one of the main reasons people open HSAs—to have pre-tax money available to cover the out-of-pocket costs that come before insurance coverage begins.

What happens if I do not use all my HSA money in a year?

The money rolls over to the next year. Unlike a flexible spending account (FSA), there is no "use it or lose it" rule with an HSA. You can accumulate funds indefinitely and use them whenever you need medical care.

Can I withdraw HSA money to pay for my spouse's medical expenses?

Yes, as long as your spouse is your dependent for tax purposes. You can use HSA funds for medical expenses of your spouse and any tax dependents, even if they are not covered by your health insurance plan.

What if I withdraw money from my HSA and later find out it was not a may have access to expense?

You owe income tax on the withdrawal plus a 20% penalty if you are under 65. If you discover the error before filing your tax return, you can deposit the money back into the account and correct the issue. After filing, you would need to amend your return.

Can I open an HSA if I have Medicare?

No. Once you enroll in Medicare, you are no longer may be able to access to contribute to an HSA. You can keep an existing account and withdraw funds for medical expenses, but you cannot add new money. Most people lose HSA may be able to access at age 65 when they become may be able to access for Medicare.