A health savings account holds money you set aside for medical costs, and you control when and how it gets spent

A Health Savings Account (HSA) is a bank account attached to a high-deductible health insurance plan. You put pre-tax money into it, the money grows tax-free, and you withdraw it to pay medical bills. Unlike a flexible spending account, money you don't use in a given year stays in the account and rolls forward. The account is yours to keep even if you change jobs or insurance plans.

The mechanics are straightforward: your employer or you contribute money, that money sits in an account earning interest, and you spend it on may have access to medical expenses whenever you need to. No permission forms. No claims to file. You pay the doctor or pharmacy, then reimburse yourself from the HSA, or you give the HSA debit card directly to the provider and the money moves from your account to theirs.

Key Takeaways

  • Money goes into an HSA as pre-tax contributions, either through payroll deduction or direct deposit, reducing your taxable income for the year.
  • You can withdraw money for any may have access to medical expense—copays, deductibles, prescriptions, dental work, vision care—without paying income tax on the withdrawal.
  • Unused money stays in the account year to year and can be invested in mutual funds or left in cash, earning interest or investment returns.
  • After age 65, you can withdraw money for any reason without penalty, though non-medical withdrawals are taxed as income.
  • The account belongs to you, not your employer, so you keep it if you change jobs or leave your current health plan.

How money enters the account

Contributions come in two forms: payroll deductions and direct deposits. If your employer offers an HSA, you authorize a portion of your paycheck to go into the account before taxes are calculated. That money never appears on your W-2 as income, which lowers your federal tax bill. For 2024, the contribution limit is $4,150 for individual coverage and $8,300 for family coverage, though these limits change annually.

If you don't have an employer HSA or want to contribute more, you can open an HSA independently through a bank or financial institution and deposit money yourself. You still get the tax deduction when you file your tax return—you report the contribution on Form 8889 and reduce your taxable income by that amount. The important date to contribute for a given tax year is typically April 15 of the following year, the same as the tax filing important date.

Some employers contribute money on your behalf as part of compensation. That money goes directly into your HSA and counts toward the annual limit. If both you and your employer contribute, the combined total cannot exceed the yearly maximum.

What happens to the money while it sits there

Money in an HSA can stay in cash, earning interest at whatever rate your bank offers, or you can invest it in mutual funds, stocks, or bonds through the HSA provider. The investment options depend on which bank or financial company holds your account—some offer only savings accounts, while others provide a full brokerage menu. Any interest or investment gains are tax-free, so a dollar that grows to $1.10 in the account is still yours without tax consequences.

This is different from a flexible spending account (FSA), where unused money is forfeited at the end of the year. With an HSA, there is no "use it or lose it" rule. You can let the balance accumulate for years, building a reserve for future medical costs or retirement. Many people treat an HSA as a long-term investment account specifically for health expenses in later life.

The account is portable. If you change jobs, get married, retire, or switch insurance plans, the HSA goes with you. Your new employer cannot take the money, and you do not have to move it to a new account unless you choose to. You can keep the same HSA for decades.

How you spend the money

When you have a medical expense, you have three options. First, you can use the HSA debit card directly at the provider or pharmacy, and the money transfers from your account to theirs when ready. Second, you can pay out of pocket with your own money and then reimburse yourself from the HSA later—days, weeks, or even years later. Third, you can request a check from the HSA provider and deposit it yourself.

may have access to expenses include copays, coinsurance, deductibles, prescriptions, dental work, vision care, mental health treatment, physical therapy, and many other medical services. The IRS publishes a detailed list, but the general rule is that if it is a medical cost your insurance would normally cover, the HSA can pay for it. Over-the-counter medications like cold medicine or pain relievers are covered only if you have a prescription from a doctor.

You do not need to submit receipts or get approval before spending. The HSA provider does not review whether an expense qualifies—that responsibility is yours. If you withdraw money for something that is not a may have access to expense, you pay income tax on that amount plus a 20 percent penalty. The exception is after age 65, when non-medical withdrawals are taxed as income but the penalty disappears.

The tax advantage and how it compounds

An HSA gives you a triple tax benefit. First, contributions reduce your taxable income, lowering your federal tax bill. Second, the money grows tax-free inside the account. Third, withdrawals for may have access to medical expenses are not taxed. No other savings account offers all three.

The math works like this: if you earn $60,000 and contribute $4,150 to an HSA, your taxable income drops to $55,850. At a 22 percent tax rate, that saves you about $913 in federal taxes. If that $4,150 sits in the account for 20 years and grows to $12,000 through interest and investment returns, you owe no tax on that $7,850 gain. When you withdraw $5,000 for a surgery, that $5,000 is not taxed either. Over a lifetime, the tax savings can be substantial.

This is why many people use an HSA as a retirement savings tool. They contribute the maximum each year, invest the money, and pay medical expenses out of pocket if they can afford to. The account grows untouched. After age 65, they can withdraw money for any reason—the penalty goes away, though non-medical withdrawals are taxed as regular income. At that point, the HSA functions like a traditional IRA with a medical expense bonus.

Limits and rules that affect how you use the account

You can only open an HSA if you are enrolled in a high-deductible health plan (HDHP). The IRS defines an HDHP as a plan with a deductible of at least $1,600 for individual coverage or $3,200 for family coverage in 2024. If you switch to a regular health plan with a lower deductible, you can no longer contribute to the HSA, though you can keep the account and spend down the balance.

You cannot be covered by any other health insurance at the same time, with limited exceptions for accident, disability, dental, vision, and long-term care coverage. If you are on Medicare, you cannot contribute to an HSA, though you can continue to withdraw money for may have access to expenses.

The contribution limit resets each January. If you contribute too much in a given year, the excess is taxed and penalized. If you withdraw money for a non-may have access to expense before age 65, you pay income tax plus a 20 percent penalty on that amount. Keeping records of what you spent and when is important, because the IRS can audit HSA withdrawals up to seven years after the fact.

Moving an HSA or closing it

You can transfer an HSA from one provider to another without tax consequences. This is called a trustee-to-trustee transfer. You contact the new provider, they request the funds from the old provider, and the money moves directly between accounts. You never touch it, so there are no tax implications. You might do this to get better investment options, lower fees, or straightforward because you prefer a different bank.

If you close an HSA, you can withdraw the full balance without penalty as long as you use it for may have access to medical expenses or roll it into another HSA. If you withdraw money for non-medical reasons, the standard rules explore: income tax plus a 20 percent penalty before age 65. After age 65, the penalty disappears but income tax still applies to non-medical withdrawals.

Some people close an HSA when they lose may be able to access—for example, when they turn 65 and enroll in Medicare, or when they switch to a non-high-deductible plan. The account does not automatically close. You have to request closure, and at that point you decide what to do with the remaining balance.

Frequently Asked Questions

Can I use HSA money to pay my insurance premiums?

No, with one exception. You cannot use HSA funds to pay regular monthly premiums for any health insurance. However, you can use HSA money to pay premiums for COBRA coverage (continuation coverage after job loss), long-term care insurance, or health insurance while you are receiving unemployment benefits. Medicare premiums after age 65 are also allowed.

What happens to my HSA if I get divorced or change jobs?

The HSA is yours alone and does not transfer to a spouse in a divorce. You keep the account and the balance. If you change jobs, the HSA stays with you—your new employer cannot touch it. You can keep the same account, move it to a new provider, or leave it where it is. There is no important date to move it, and no tax consequence for changing providers.

Can I use HSA money for my spouse or children?

Yes, if they are covered under your high-deductible health plan. You can pay their copays, deductibles, and other may have access to medical expenses from your HSA. If they are on a different insurance plan or uninsured, you cannot use your HSA to pay their medical bills unless they are your tax dependents and the expenses are for may have access to medical care.

What if I accidentally withdraw money for something that is not a may have access to expense?

You owe income tax on that amount plus a 20 percent penalty before age 65. For example, if you withdraw $500 for vitamins (not may have access to), you pay income tax on the $500 plus $100 in penalties. After age 65, the penalty disappears but income tax still applies. Keep receipts for all withdrawals in case the IRS asks.

Can I invest HSA money in stocks or crypto?

Stocks and mutual funds are allowed through most HSA providers. Cryptocurrency is not permitted—the IRS does not recognize it as a may have access to investment for HSA funds. Check with your specific HSA provider about what investment options they offer, as some banks limit you to savings accounts or money market funds.