What happens when you open and fund an HSA

A Health Savings Account is a tax-advantaged savings account tied to a high-deductible health plan. You open it through a bank, credit union, or financial institution that offers HSA accounts—not through your employer or insurance company, though your employer may help you set one up. Once open, you fund it with pre-tax money, either through payroll deduction (if your employer offers it) or by depositing after-tax money and deducting it on your tax return.

The money sits in your HSA account and earns interest or investment returns, depending on how you choose to hold it. Unlike a flexible spending account (FSA), which forces you to spend the money or lose it each year, HSA funds roll over indefinitely. You keep whatever you don't spend, and it grows tax-free as long as you use it for may have access to medical expenses.

To open an HSA, you must be enrolled in a high-deductible health plan (HDHP)—a specific category of health insurance with a higher deductible than standard plans. In 2024, 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. Your insurance company or employer will tell you whether your plan qualifies.

Key Takeaways

  • You can only open an HSA if you are enrolled in a high-deductible health plan, and you must remain enrolled to keep contributing.
  • Money goes in tax-free, grows tax-free, and comes out tax-free if you spend it on may have access to medical expenses—making it the only account with this triple tax advantage.
  • Unlike FSAs, HSA funds never expire; you can save them for years and use them in retirement or for any may have access to expense at any time.
  • You can invest HSA funds in stocks, bonds, or mutual funds once your balance reaches a certain threshold, usually $1,000 to $2,500 depending on your provider.
  • If you withdraw money for non-medical expenses before age 65, you pay income tax plus a 20 percent penalty; after 65, you pay only income tax.

How money flows in: payroll deduction and direct deposit

If your employer offers HSA payroll deduction, money comes out of your paycheck before taxes are calculated. This reduces your taxable income for the year. For example, if you contribute $3,000 through payroll deduction and earn $50,000, your taxable income drops to $47,000. You avoid federal income tax, Social Security tax, and Medicare tax on that $3,000.

If you don't have payroll deduction—because your employer doesn't offer it or you're self-employed—you can deposit money directly into your HSA account and deduct it on your tax return when you file. You'll need to report the deduction on Form 1040 using Schedule 1. The tax benefit is the same, but you claim it at tax time rather than seeing it in your paycheck.

Contribution limits are set by the IRS and change yearly. For 2024, you can contribute up to $4,150 for individual coverage or $8,300 for family coverage. If you're 55 or older, you can add an extra $1,000 per year (called a catch-up contribution). Once you hit the limit, you cannot contribute more that year, even if you have money left over.

How money grows: interest, investment options, and account minimums

Most HSA accounts start as savings accounts that earn a small amount of interest. The rate varies by provider—some offer 4 to 5 percent APY, others offer less than 1 percent. Check your provider's current rate before opening an account, because the difference compounds over time.

Once your balance reaches a certain threshold—typically $1,000 to $2,500, depending on your provider—you can invest the money in mutual funds, stocks, bonds, or target-date funds. This is optional; you can keep everything in savings if you prefer. If you invest, your money can grow faster, but it also carries the risk of losing value in a down market. Many people keep a smaller amount in savings for immediate medical expenses and invest the rest for long-term growth.

Your HSA provider will send you statements showing your balance, transactions, and investment performance. Some providers offer a debit card linked to your HSA, which lets you pay for may have access to medical expenses directly from the account at the point of sale. Others require you to pay out of pocket and then submit receipts for reimbursement.

How money comes out: may have access to medical expenses and the reimbursement process

You can withdraw money from your HSA tax-free only for may have access to medical expenses. These include doctor visits, prescription medications, dental work, vision care, mental health treatment, and medical equipment like crutches or hearing aids. They do not include cosmetic procedures, gym memberships, or over-the-counter medications (with rare exceptions). The IRS publishes a full list on its website.

If your HSA provider gives you a debit card, you can swipe it at the pharmacy or doctor's office and the money comes out immediately. If you don't have a debit card, you pay with your regular payment method and then request reimbursement from your HSA provider. You'll need to submit a receipt or explanation of benefits showing the expense was medical and the amount. Reimbursement typically takes three to seven business days.

You can also withdraw money and reimburse yourself years later. For example, you could pay for a $500 dental procedure out of pocket in 2024, keep the receipt, and request reimbursement from your HSA in 2030. As long as you have the receipt and the expense was may have access to, the withdrawal is tax-free. This strategy lets you use your HSA as a long-term investment account while covering medical costs with other money.

What happens if you spend money on non-medical expenses

If you withdraw money for something that is not a may have access to medical expense, you owe income tax on that amount plus a 20 percent penalty. For example, if you withdraw $1,000 for a vacation and you're in the 24 percent tax bracket, you'll owe $240 in income tax plus $200 in penalties—a total of $440 in taxes on top of the $1,000 you spent. The penalty applies only to the earnings on the money, not the contributions themselves, but the income tax applies to the full amount.

After age 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. This makes an HSA a useful retirement savings tool—you can let it grow for decades and then use it for medical expenses in retirement tax-free, or use it for other expenses and pay only income tax (no penalty).

What changes if you leave your job or switch health plans

Your HSA belongs to you, not your employer. If you leave your job, the account stays open and the money remains yours. You can keep contributing if you stay enrolled in a high-deductible health plan through your new employer, a spouse's plan, or the individual market. If you switch to a non-HDHP plan, you can no longer contribute, but you can still withdraw money for may have access to medical expenses.

If you lose HSA may be able to access—for example, because you switched to a standard health plan—you have a grace period. You can continue to withdraw money for may have access to medical expenses, but you cannot make new contributions. Some people use this period to spend down their HSA on planned medical expenses before the account becomes inactive.

If you have an HSA through your employer and your employer closes the account, you have the right to roll the money into an HSA at another provider. Your employer must give you at least 30 days' notice and help you transfer the funds. You should not lose money or access during this process.

HSA versus FSA: why the differences matter

A Flexible Spending Account (FSA) is similar to an HSA but works differently in important ways. FSA money must be spent in the same calendar year or you lose it (with a small carryover option in some plans). HSA money rolls over forever. FSAs are not portable—if you leave your job, the account closes and you lose any unspent money. HSAs travel with you.

FSAs also do not allow investment; your money sits in a savings account earning little to no interest. HSAs let you invest for growth. On the other hand, FSAs have higher contribution limits in some cases and do not require enrollment in a high-deductible plan. If you have access to both, an HSA is usually the better choice for long-term savings, while an FSA is better if you have predictable medical expenses you want to cover with pre-tax money each year.

Frequently Asked Questions

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

Yes. HSA funds can be used for may have access to medical expenses of you, your spouse, and your dependents, regardless of whether they are covered under your health plan. You just need receipts showing the expenses were medical and the amounts.

What happens to my HSA if I die?

Your HSA becomes part of your estate. If your spouse is the beneficiary, they can continue to use the account for their own medical expenses tax-free. If a non-spouse inherits it, they owe income tax on the full balance, though they can use it for the deceased person's medical expenses without the 20 percent penalty.

Can I use my HSA to pay for health insurance premiums?

You can use HSA funds to pay premiums for long-term care insurance, COBRA continuation coverage, or health insurance while you are receiving unemployment benefits. You cannot use it for regular health insurance premiums, including those for your employer plan or the individual market.

Do I have to use my HSA every year or lose the money?

No. Unlike an FSA, HSA funds roll over indefinitely. You can save for years without spending anything and the money stays in your account. This makes it useful as a retirement savings tool.

What if I receive a bill for a medical expense but don't have enough in my HSA?

You can pay the bill with another payment method and then reimburse yourself from your HSA later, as long as you have the receipt. There is no time limit on reimbursement, so you could pay out of pocket now and request reimbursement months or years later.