What a Health Savings Account Does

A Health Savings Account (HSA) is a bank account that holds money specifically for medical expenses, with tax advantages that a regular savings account does not have. You put pre-tax dollars into it, the money grows without being taxed, and when you withdraw it to pay for medical care, you pay no tax on that withdrawal either. The account stays in your name and belongs to you — the money does not disappear at the end of the year.

The mechanics are straightforward: money goes in before your employer or the IRS takes a cut, it sits in an account you control, and you use it to pay doctors, pharmacies, and other medical providers. Unlike a flexible spending account (FSA), which forces you to spend the money or lose it, an HSA rolls unused funds forward indefinitely. After age 65, you can withdraw money for any reason without penalty, though non-medical withdrawals are taxed as income.

Key Takeaways

  • Money you put into an HSA is not subject to federal income tax, payroll tax, or state income tax in most states, which when ready reduces what you owe.
  • You can use HSA funds to pay for a wide range of medical expenses: deductibles, copays, prescriptions, dental work, vision care, and medical equipment.
  • Unused money stays in the account year to year and earns interest or investment returns, unlike FSAs which reset annually.
  • You must be enrolled in a high-deductible health plan (HDHP) to open and contribute to an HSA, and you cannot have other health coverage that would disqualify you.
  • After you turn 65, you can withdraw HSA funds for any expense without the 20 percent penalty, though non-medical withdrawals are taxed as regular income.

How Money Moves In and Out

If your employer offers an HSA, contributions usually come directly from your paycheck before taxes are calculated. Your employer deducts the amount you choose, sends it to the HSA custodian (typically a bank or financial services company), and that money lands in your account within a few business days. You see the reduction in your gross pay, which lowers your taxable income for the year.

If you are self-employed or your employer does not offer an HSA, you can open one independently and make contributions yourself. You then deduct those contributions on your tax return (Form 1040, Schedule 1) when you file. Either way, the money is yours to manage — you decide when to spend it and on what.

Withdrawals work through a debit card, check, or bank transfer that the HSA custodian provides. You pay the medical provider directly from the account, or you pay out of pocket and reimburse yourself from the HSA later. Some people keep receipts and reimburse themselves years later, letting the account grow in the meantime. There is no time limit on when you must use the money for a particular expense.

What Medical Expenses You Can Pay For

The IRS maintains a list of may have access to medical expenses that you can pay for with HSA funds without tax penalty. These include deductibles and copays, prescription medications, dental and orthodontic care, vision exams and glasses, hearing aids, mental health counseling, and physical therapy. You can also use HSA funds for medical equipment like crutches, wheelchairs, or blood glucose monitors.

Some expenses are less obvious but still covered: over-the-counter medications (including pain relievers and allergy medicine), insulin, and certain medical supplies. Cosmetic procedures are not covered unless they treat an injury or disease — Botox is not covered, but reconstructive surgery after an accident is. If you are unsure whether an expense qualifies, the IRS publishes Publication 502, which lists hundreds of examples.

Health insurance premiums themselves are generally not covered, with one exception: if you are receiving unemployment benefits, you can use HSA funds to pay for health insurance premiums without penalty. This is one of the few situations where the rules bend.

The Tax Advantage and How It Compounds

The tax benefit works three ways. First, contributions reduce your taxable income — if you earn $60,000 and contribute $4,000 to an HSA, you report only $56,000 to the IRS. Second, the money inside the account grows tax-free; if you invest your HSA balance in mutual funds or stocks, you pay no tax on the gains. Third, withdrawals for medical expenses are not taxed at all.

This triple tax advantage is rare. A regular savings account is taxed on interest. A 401(k) is taxed when you withdraw it. An HSA is taxed at none of those stages if you use it for medical expenses. Over time, this compounds. If you contribute $4,000 a year for 20 years and earn 5 percent annual returns, your balance grows to roughly $120,000 — and you owe no tax on any of it if you spend it on medical care.

The catch is that you must be enrolled in a high-deductible health plan (HDHP) to contribute. In 2024, an HDHP has a minimum deductible of $1,600 for individual coverage or $3,200 for family coverage. These plans have lower premiums than traditional plans, so the trade-off is lower monthly costs in exchange for higher out-of-pocket costs when you actually need care.

Who Can Open an HSA and When

You can open an HSA only if you are enrolled in an HDHP and have no other health coverage that would disqualify you. You cannot have Medicare, Medicaid, TRICARE, or a spouse's health plan that is not an HDHP. You also cannot be claimed as a dependent on someone else's tax return. If all these conditions are met, you can open an account at any bank or financial services company that offers HSAs.

Contribution limits change annually. For 2024, you can contribute up to $4,150 if you have individual coverage or $8,300 for family coverage. If you are 55 or older, you can contribute an additional $1,000 per year as a catch-up contribution. These limits are set by the IRS and announced each year.

You can open an HSA at any time during the year, but contributions for a given tax year must be made by the tax filing important date (usually April 15 of the following year). If you enroll in an HDHP mid-year, you can still contribute a prorated amount for that year.

What Happens to the Money If You Do Not Spend It

Unlike an FSA, which resets to zero every January and forces you to use it or lose it, an HSA is yours permanently. Money you do not spend rolls forward indefinitely. If you contribute $4,000 in 2024 and spend only $1,500, the remaining $2,500 stays in the account and is still yours in 2025, 2030, and beyond.

This makes an HSA a form of long-term savings. Many people use it as a retirement account specifically for medical expenses, contributing the maximum each year and investing the balance rather than keeping it in cash. Medical expenses tend to rise with age, so having a large HSA balance at retirement can cover significant out-of-pocket costs without touching other retirement savings.

If you change jobs or leave your employer, your HSA goes with you. The account is not tied to your employer — it is your account at a financial institution. You can continue to contribute if you remain in an HDHP, or you can leave the money untouched and let it grow.

What Changes After Age 65

At 65, the rules shift. You can no longer contribute to an HSA (you become ineligible once you enroll in Medicare), but you can still withdraw money from the account. If you withdraw funds for medical expenses, there is no tax or penalty. If you withdraw for non-medical reasons, you pay income tax on the withdrawal but no 20 percent penalty.

This makes an HSA a flexible retirement tool. You can use it to cover Medicare premiums, copays, deductibles, and long-term care costs. Or, if you have other retirement savings, you can leave the HSA untouched and let it continue to grow, withdrawing only when you need it. After your death, the account passes to your beneficiary — usually your spouse, who can continue to use it tax-free for medical expenses, or your estate, which pays income tax on the full balance.

Frequently Asked Questions

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

Yes. HSA funds can be used for medical expenses of you, your spouse, and your dependents, regardless of whether they are covered under your health plan. You do not need to be on the same insurance policy.

What happens to my HSA if I switch to a plan that is not a high-deductible plan?

You keep the account and the money in it, but you cannot make new contributions. You can still withdraw funds for medical expenses without penalty. Once you re-enroll in an HDHP, you can resume contributions.

Can I invest the money in my HSA?

Most HSA custodians allow you to invest the balance in mutual funds, stocks, or bonds, similar to a brokerage account. Some require a minimum balance (often $1,000 to $2,500) before you can invest. Check with your specific custodian for their investment options.

Do I have to submit receipts to withdraw HSA money?

No. You can withdraw money without submitting proof of the expense at the time of withdrawal. However, you should keep receipts and documentation in case the IRS audits you, because you are responsible for proving that withdrawals were for may have access to medical expenses.

What if I withdraw HSA money for a non-medical expense before age 65?

You pay income tax on the withdrawal plus a 20 percent penalty. For example, if you withdraw $1,000 for a non-medical reason at age 40, you owe income tax on that $1,000 plus $200 in penalty. After 65, the penalty goes away but income tax remains.