An HSA is a bank account you own that holds money specifically for medical expenses, with tax advantages that regular savings accounts don't have.

A Health Savings Account is a real savings account—like a checking account, but restricted to medical costs. You put money in (usually through payroll deduction), the money sits there earning interest, and you withdraw it to pay for doctor visits, prescriptions, dental work, or other medical bills. The tax advantage is the point: contributions reduce your taxable income, interest and growth are tax-free, and withdrawals for medical expenses are tax-free. No other savings account works this way.

You can only open an HSA if you're enrolled in a high-deductible health plan (HDHP)—a specific type of health insurance with a higher deductible than standard plans. The HDHP is the gateway. Without it, you cannot have an HSA, and if you drop the HDHP, you can no longer contribute to the HSA (though you keep the money already there).

Key Takeaways

  • An HSA is a savings account you control that holds money for medical expenses, with tax advantages on contributions, growth, and withdrawals.
  • You must be enrolled in a high-deductible health plan to open or contribute to an HSA; dropping that plan stops contributions but you keep the balance.
  • Your employer, you, or both can contribute money each year up to a limit set by the IRS (the limit changes yearly and depends on whether coverage is individual or family).
  • You can withdraw money for may have access to medical expenses anytime without penalty; non-medical withdrawals are taxed as income plus a 20 percent penalty until age 65.
  • Money you don't spend in a given year rolls forward indefinitely—there is no "use it or lose it" important date like some other health accounts.

Who can open an HSA and when

You become HSA-may be able to access the moment you enroll in an HDHP. Most people do this during their employer's open enrollment period (usually October or November), and the HSA may be able to access starts on the same date the HDHP coverage begins. If you buy an HDHP through the individual market (not through an employer), you can open an HSA as soon as that coverage is active.

You cannot have an HSA if you are covered by any other health insurance at the same time—not Medicare, not a spouse's standard plan, not a parent's plan if you're under 26. The IRS rule is strict: HDHP coverage only, or no HSA. If you turn 65 and enroll in Medicare, you stop being HSA-may be able to access at that point, though you keep the money in the account and can still withdraw it for medical expenses (without the 20 percent penalty that applies to non-medical withdrawals before 65).

How much you can contribute each year

The IRS sets an annual contribution limit that changes most years. For 2024, the limit is $4,150 for individual coverage and $8,300 for family coverage. These numbers are adjusted yearly for inflation, so they will be different in 2025 and beyond. Your employer, you, or both together can contribute up to that limit in a calendar year. If your employer contributes $2,000, you can add $2,150 more (for individual coverage) without exceeding the limit.

If you turn 55 during the year, you can contribute an extra $1,000 (called a catch-up contribution). This applies only once you reach 55, and it stays available every year after until you enroll in Medicare. The catch-up amount does not change with inflation—it has been $1,000 since 2006.

Contributions are usually made through payroll deduction if your employer offers an HSA plan. Money comes out of your paycheck before taxes, which reduces your taxable income for the year. If you contribute on your own (because your employer doesn't offer an HSA or you're self-employed), you deduct the contribution on your tax return.

How the money grows and what you can spend it on

Once money is in the HSA, it sits in an account that earns interest or can be invested in mutual funds, depending on the bank or provider. The growth is tax-free. You only pay taxes on the growth if you withdraw it for something other than a medical expense.

may have access to medical expenses are the only reason to withdraw without tax consequences. These include doctor visits, hospital stays, prescription drugs, dental work, vision care, mental health treatment, and medical equipment like wheelchairs or hearing aids. They also include health insurance premiums in specific situations: COBRA continuation coverage, Medicare premiums (after age 65), and long-term care insurance premiums (up to a limit). Over-the-counter medicines like ibuprofen or cold medicine count only if you have a prescription from a doctor.

You can withdraw money anytime for any may have access to expense. There is no waiting period, no approval process, and no annual limit on withdrawals. If you spend $500 on a dental crown in January and $3,000 on surgery in June, you can withdraw both amounts whenever you need them.

What happens if you withdraw money for non-medical reasons

If you withdraw money before age 65 for something that is not a may have access to medical expense, two things happen: the amount is added to your taxable income for that year, and you owe a 20 percent penalty on top of the income tax. So a $1,000 non-medical withdrawal might cost you $200 in penalty plus whatever income tax rate applies to you (which could be 12 percent, 22 percent, or higher depending on your total income). The penalty is steep by design—the account is meant to stay for medical use.

Once you turn 65, the penalty goes away. You can withdraw money for any reason without the 20 percent penalty, though you still owe income tax on non-medical withdrawals. At that point, the HSA becomes similar to a traditional IRA: you can use it for anything, but you pay income tax on what you take out.

How to use the money when you need it

Most HSAs come with a debit card linked to the account. You swipe it at the doctor's office, pharmacy, or hospital, and the money comes out directly. Some providers also issue checks or allow transfers to your regular bank account. The process is straightforward—it works like any other debit card.

You are responsible for keeping records that show each withdrawal was for a may have access to expense. The IRS does not require you to submit receipts when you withdraw, but if you are audited, you need to prove the expense was medical. Keep receipts, invoices, and explanation of benefits statements for at least three years.

Some people use the HSA as a long-term investment account rather than a spending account. They pay medical expenses out of pocket and leave the HSA money invested, letting it grow. This is legal and actually common among people who can afford to do it. The account has no important date—money rolls forward year to year indefinitely, and you can withdraw it decades later if you need it.

What changes if you leave your job or switch health plans

The HSA belongs to you, not your employer. If you leave your job, the account stays yours. You keep the balance, and you can keep contributing if you enroll in another HDHP (either through a new employer or on the individual market). If you switch to a non-HDHP plan, you stop being able to contribute, but the money already in the account remains and you can still withdraw it for medical expenses.

You can move an HSA from one bank or provider to another without tax consequences, similar to rolling over a retirement account. This is useful if your employer switches HSA providers or if you find a provider with lower fees or better investment options. The transfer takes a few weeks but is straightforward.

HSA fees and how they affect your balance

HSA providers charge different fees depending on the account type. Some charge a monthly maintenance fee ($2 to $5), some charge per transaction, and some charge investment fees if you invest the money in mutual funds. A few providers charge no fees at all, particularly if you keep a minimum balance. These fees come out of your HSA balance, so they reduce the amount available for medical expenses or investment growth.

If you are only using the HSA to pay for when ready medical expenses, fees matter less because the money moves quickly. If you are using it as a long-term investment account, fees compound over time and can significantly reduce growth. It is worth comparing providers before you open an account, especially if your employer gives you a choice.

Frequently Asked Questions

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

Yes, if your spouse is covered under your family HDHP plan. If your spouse has their own separate health insurance, you cannot use your HSA for their expenses. The rule is that the person must be a dependent on your tax return or covered by the same HDHP.

What if I don't spend all my HSA money in a year?

The money rolls forward to the next year with no limit. There is no important date to spend it, and no penalty for leaving it in the account. You can accumulate HSA money over decades if you choose, making it different from flexible spending accounts (FSAs), which have a use-it-or-lose-it rule.

Can I withdraw HSA money to pay for health insurance premiums?

Only in specific cases: COBRA continuation coverage, Medicare premiums (after age 65), and long-term care insurance premiums up to an IRS limit. You cannot use HSA money to pay premiums for a standard health plan or short-term health insurance.

What happens to my HSA if I enroll in Medicare?

You stop being able to contribute to the HSA once Medicare coverage begins. The money already in the account stays there, and you can withdraw it for any medical expense without the 20 percent penalty (since you are over 65). Non-medical withdrawals are still taxed as income.

Can I open an HSA if my employer doesn't offer one?

Yes. You can buy an HDHP on the individual market through the health insurance marketplace or directly from an insurer, and then open an HSA at a bank or financial institution. The contribution limits and rules are the same whether the HDHP comes through an employer or the individual market.