What an HSA is and how the money moves

A Health Savings Account (HSA) is a tax-advantaged savings account tied to a high-deductible health insurance plan. You put pre-tax money into it, use it to pay medical expenses, and any balance you don't spend stays in the account and grows tax-free year to year. The account belongs to you — not your employer, not your insurance company — so the money follows you if you change jobs or insurance plans.

The mechanics are straightforward: your employer or you deposits money into the HSA (usually through payroll deduction if your employer offers it). That money sits in an investment account — typically a savings account, money market fund, or mutual funds, depending on the provider. When you have a medical expense, you withdraw from the HSA to pay for it. Unlike a Flexible Spending Account (FSA), which forces you to spend the money or lose it each year, an HSA balance rolls forward indefinitely.

You can only open an HSA if you're enrolled in a high-deductible health plan (HDHP). The IRS sets the minimum deductible each year — for 2024, that's $1,600 for individual coverage and $3,200 for family coverage. You cannot be covered by any other health insurance (with narrow exceptions for specific plans like dental or vision), and you cannot be claimed as a dependent on someone else's tax return.

Key Takeaways

  • An HSA is a personal savings account for medical expenses that you own outright, with money that grows tax-free and never expires.
  • You must be enrolled in a high-deductible health plan to open an HSA, and you contribute pre-tax dollars through payroll or directly.
  • You can withdraw money tax-free only for may have access to medical expenses — doctor visits, prescriptions, dental work, vision care, and some medical equipment.
  • After age 65, you can withdraw money for any reason without penalty, though non-medical withdrawals are taxed as ordinary income.
  • The annual contribution limit is set by the IRS and varies by coverage type; for 2024, it's $4,150 for individual and $8,300 for family coverage.

Who can open an HSA and when

You become HSA-may be able to access the moment you enroll in a high-deductible health plan. If your employer offers an HSA, they typically set it up automatically or give you the option during open enrollment. If you buy your own HDHP through the health insurance marketplace or directly from an insurer, you can open an HSA through a bank, credit union, or investment firm — you don't have to use your insurance company's HSA provider, though some employers restrict you to their chosen vendor.

You can open an HSA at any point during the year you're covered by an HDHP, but contribution limits are prorated if you enroll mid-year. The IRS allows a "testing period" exception: if you open an HSA in December, you can contribute the full year's amount even though you've only been covered for one month, as long as you remain HSA-may be able to access through December 31 of the following year.

You lose HSA may be able to access if you switch to a non-high-deductible plan, enroll in Medicare, or become covered by another health insurance plan. Once you lose may be able to access, you can no longer contribute, but the money already in the account stays there and you can continue to withdraw it for may have access to medical expenses.

How money goes in: contributions and limits

If your employer offers an HSA, the most common route is payroll deduction — money comes out of your paycheck before taxes are calculated, reducing your taxable income for the year. Your employer may also contribute to your HSA (many do as a benefit), and that money is not counted as taxable income to you.

You can also contribute directly to your HSA outside of payroll, either as a lump sum or through regular transfers from your bank account. Direct contributions are tax-deductible when you file your tax return — you report them on Form 8889 and subtract them from your income. The IRS sets annual contribution limits: for 2024, you can contribute up to $4,150 if you have individual coverage or $8,300 if you have family coverage. If you're 55 or older, you can add an extra $1,000 per year (called a catch-up contribution).

Contributions must be made by the tax filing important date of the following year — typically April 15 — to count toward that tax year. If you contribute more than the limit, the excess is taxed as income and you owe a 6% penalty tax on the overage each year it remains in the account.

What you can and cannot pay for with HSA money

The IRS maintains a detailed list of may have access to medical expenses. The broad categories are: doctor visits and hospital care, prescription drugs and insulin, dental and orthodontic work, vision care and glasses, hearing aids, mental health treatment, physical therapy, and certain medical equipment like blood pressure monitors or crutches. You can also use HSA money for long-term care insurance premiums (with limits) and Medicare premiums once you're enrolled.

What you cannot pay for: health insurance premiums (with the Medicare exception), cosmetic procedures, gym memberships, over-the-counter medications without a prescription, vitamins and supplements, and teeth whitening. The line is sometimes blurry — for example, you can pay for prescription allergy medication but not over-the-counter antihistamines, unless a doctor writes a prescription for the over-the-counter version.

When you withdraw money for a non-may have access to expense, you owe income tax on the withdrawal plus a 20% penalty. After age 65, the penalty goes away but the income tax remains, so you can use HSA money for anything at that point — it just becomes taxable income.

How to actually use the money when you need it

Most HSA providers give you a debit card linked to the account. You can swipe it at the doctor's office, pharmacy, or hospital like any other card. Some providers also let you set up automatic bill pay to send money directly to your healthcare providers. If you don't have a debit card or prefer not to use it, you can request a check or transfer money to your bank account and pay out of pocket, then reimburse yourself from the HSA later.

You don't have to spend HSA money when ready. You can pay a medical expense out of pocket and leave the money in the HSA to grow, then reimburse yourself months or years later. Keep receipts and documentation — the IRS doesn't require you to submit them when you withdraw, but you must be able to prove the expense was may have access to if you're ever audited. Some people use this strategy to let the HSA grow like a retirement account, paying medical expenses from their regular income and saving HSA withdrawals for later.

If you change jobs or insurance plans, your HSA moves with you. You can roll it over to a new HSA at a different provider, or keep it where it is and continue to use it for may have access to expenses even if you're no longer enrolled in an HDHP (you just can't contribute new money). Some employers require you to use their HSA provider while employed, but once you leave, the account is yours to manage.

HSA as an investment and retirement tool

Unlike an FSA, which is usually a straightforward savings account, many HSAs let you invest the balance in mutual funds, stocks, or bonds. This means your HSA can grow over time through investment returns, not just through contributions. If you're young and healthy and don't expect to use much medical care, you can let the money compound tax-free for decades — some people treat it as a supplemental retirement account.

After age 65, you can withdraw HSA money for any reason without the 20% penalty, though non-medical withdrawals are taxed as ordinary income. This makes the HSA similar to a traditional IRA in that regard, except the HSA has no required minimum distributions and no age limit on contributions (as long as you remain HSA-may be able to access). If you use it only for medical expenses in retirement, all withdrawals remain tax-free.

The tax advantage compounds over time. A $4,150 contribution in 2024 that grows at 5% annually becomes $5,300 in 10 years, all without paying taxes on the growth. If you withdraw it for a may have access to medical expense, you pay no tax at all. If you withdraw it for something else after 65, you pay income tax only on the growth, not the original contribution.

Common situations and what happens

If you change jobs and your new employer doesn't offer an HSA, you keep the account and can continue to use it for may have access to expenses. You cannot contribute new money unless you enroll in an HDHP on your own, but the existing balance stays yours indefinitely.

If you switch from an HDHP to a regular health plan mid-year, you can contribute to the HSA only for the months you were covered by the HDHP. For example, if you had an HDHP for six months and then switched to a PPO, you can contribute half the annual limit. You can still withdraw from the account for may have access to expenses even after you lose may be able to access.

If you inherit an HSA from a spouse, it becomes your HSA and you can continue to use it normally. If you inherit it from someone else, the rules are more restrictive — you owe income tax on the full balance, though withdrawals for the deceased's medical expenses are tax-free.

Frequently Asked Questions

Can I use HSA money to pay my insurance deductible?

Yes. Your deductible is a may have access to medical expense, so you can use HSA money to pay it. This is one of the main reasons people open HSAs — the combination of a high deductible and an HSA lets you set aside pre-tax money specifically to cover that deductible.

What happens to my HSA if I don't use the money?

Unlike an FSA, the money doesn't disappear. It stays in your account and rolls forward year to year, growing tax-free. You can use it five years from now, twenty years from now, or leave it to grow as an investment until retirement.

Can my employer take back money they contributed to my HSA?

No. Once your employer deposits money into your HSA, it's yours. They cannot reclaim it, even if you leave the company. The account is legally yours from the moment the deposit hits.

Do I have to report HSA withdrawals on my taxes?

You report HSA activity on Form 8889 when you file your tax return. If you withdrew money only for may have access to medical expenses, there's no tax owed. If you withdrew money for non-may have access to expenses before age 65, you report the non-may have access to amount as income and owe the 20% penalty.

Can I open an HSA if I'm self-employed?

Yes, as long as you're enrolled in a high-deductible health plan. You can contribute up to the annual limit and deduct the contribution on your tax return. Self-employed people often use HSAs because the contribution is fully deductible and the account grows tax-free.