You open an HSA through a bank, credit union, or insurance company—not through your employer or the government

An HSA account is a savings account you control, separate from your health insurance. Your employer may offer one through payroll, but you are not required to use their provider. You can open an HSA on your own at any bank or financial institution that offers them, as long as you are enrolled in a high-deductible health plan (HDHP) and meet the IRS requirements for that tax year.

The process takes 15 minutes to an hour. You will need proof of your HDHP enrollment, a Social Security number or tax ID, and a way to fund the account—either through payroll deduction, a bank transfer, or a check. Some institutions let you open online; others require a phone call or in-person visit.

Key Takeaways

  • You must be enrolled in an HDHP to open an HSA, and you cannot have other health coverage (with narrow exceptions like dental or vision insurance).
  • Your employer's HSA provider is convenient but not your only option—you can open an account at any bank, credit union, or brokerage that offers HSAs.
  • You will need your HDHP plan documents or an enrollment confirmation to prove you meet the IRS requirements.
  • Funding happens through payroll deduction, direct transfer, or check deposit, and you can change your funding method or provider at any time.

Verify you meet the IRS requirements before you open

The IRS sets three hard rules for HSA ownership. First, you must be enrolled in an HDHP. For 2024, that means a deductible of at least $1,600 for individual coverage or $3,200 for family coverage. Your plan documents will state the deductible clearly. Second, you cannot have other health coverage except for specific carve-outs: dental, vision, accident, disability, long-term care, or workers' compensation. If you are on your spouse's non-HDHP plan or covered by Medicare, you cannot open an HSA. Third, you cannot be claimed as a dependent on someone else's tax return.

Check your plan documents or call your insurance company to confirm your deductible meets the HDHP threshold. If you are unsure whether your coverage disqualifies you, the IRS Publication 969 lists all the exceptions. Most people who enroll in an HDHP through an employer or the marketplace meet the requirements—the disqualifying situations are uncommon.

Decide whether to use your employer's HSA or open your own

If your employer offers an HSA, they have already vetted a provider and set up payroll deduction. That is the fastest route: you fill out a form, choose your contribution amount, and the money comes out of your paycheck before taxes. No separate bank account setup needed. The trade-off is that you are locked into their provider for that year, and you may have fewer investment options or higher fees than you would elsewhere.

If you want more control over fees, investment choices, or provider, you can open an HSA at a different institution. You will still be able to contribute through payroll if your employer uses a payroll processor that supports it—many do, even if the employer does not have a formal partnership. If payroll deduction is not available, you can fund the account yourself through bank transfer or check. Opening your own account takes longer but gives you full flexibility.

You can also do both: contribute through your employer's plan and open a separate HSA elsewhere. Some people use the employer plan for routine contributions and a low-fee brokerage account for long-term investing. Just make sure your total contributions across all accounts do not exceed the IRS annual limit—$4,150 for individual coverage and $8,300 for family coverage in 2024.

Gather the documents you will need

Have these items ready before you contact a bank or start an online process:

  • Your HDHP plan documents or an enrollment confirmation letter showing the plan name, deductible amount, and effective date.
  • Your Social Security number or tax ID.
  • A government-issued ID (driver's license or passport).
  • Proof of address (recent utility bill, lease, or bank statement).
  • Your employer's name and address if you plan to set up payroll deduction.

If you are opening the account online, you may be able to upload documents or skip some steps. If you are opening by phone or in person, having everything ready speeds up the process. Some institutions will let you open the account before your HDHP coverage starts, as long as you can show the enrollment is coming—check with the provider first.

Open the account online, by phone, or in person

Most banks and credit unions now let you open an HSA online in 10 to 15 minutes. You will enter your personal information, upload or reference your HDHP documents, and choose your account type (savings only or savings plus investment options). Some institutions offer both; others offer only savings. If you want to invest your HSA balance in stocks or mutual funds, make sure the provider you choose offers that feature.

If you prefer to speak with someone, call the bank or credit union directly. They will walk you through the same questions and may ask for documents by email or mail. In-person visits are less common but available at some credit unions and local banks.

Once your account is open, you will receive account details—your account number, routing number, and login credentials. Write these down or save them securely. You will need the account and routing number to set up payroll deduction or to transfer money from another account.

Set up funding through payroll or direct transfer

If your employer offers payroll deduction, ask your HR or benefits department for the HSA contribution form. You will specify the amount you want deducted each pay period and provide your new HSA account number and routing number. Payroll deduction is tax-advantaged—the money comes out before federal income tax, Social Security tax, and Medicare tax are calculated. Most employers process this within one or two pay cycles.

If you are funding the account yourself, log into your HSA provider's website and set up a transfer from your checking or savings account. You can also mail a check to the address provided. Some institutions let you set up recurring monthly transfers; others require you to initiate each transfer manually. Transfers usually clear within one to three business days.

You can change your contribution amount or funding method at any time. If you switch jobs or your employer changes HSA providers, you can roll your existing balance to a new account without penalty or tax—this is called a trustee-to-trustee transfer. The old provider will send the money directly to the new one, and you keep the full balance.

Understand what happens after you open the account

Once your account is funded, you can use the money to pay for may have access to medical expenses—doctor visits, prescriptions, dental work, vision care, and many other health costs. You will receive a debit card or checkbook from your HSA provider, or you can withdraw money and pay out of pocket, then reimburse yourself later. Keep receipts for all medical expenses you pay with HSA money; the IRS may ask for proof.

Any money you do not spend in a given year stays in the account and rolls over to the next year. Unlike a Flexible Spending Account (FSA), there is no "use it or lose it" rule. If you leave your job, your HSA goes with you—it is your account, not your employer's. You can keep contributing to it as long as you remain enrolled in an HDHP, even if you are self-employed or between jobs.

If you withdraw money for non-medical expenses before age 65, you will owe income tax on the withdrawal plus a 20% penalty. After age 65, you can withdraw money for any reason without the penalty, though you will still owe income tax on non-medical withdrawals. This makes an HSA a powerful long-term savings tool if you can afford to leave the money invested.

Frequently Asked Questions

Can I open an HSA if my employer does not offer one?

Yes. You can open an HSA at any bank, credit union, or brokerage that offers them. You will not have payroll deduction, so you will fund it yourself through bank transfer or check. You will still get the tax deduction when you file your taxes—you do not need payroll deduction to benefit from the tax savings.

What if I open an HSA and then lose my HDHP coverage?

You cannot make new contributions once you are no longer enrolled in an HDHP, but the money already in the account stays there. You can keep the account open and use it for medical expenses indefinitely. If you re-enroll in an HDHP later, you can start contributing again.

Can I have more than one HSA at the same time?

You can have accounts at multiple institutions, but your total contributions across all accounts cannot exceed the IRS annual limit. If you contribute more than the limit, you will owe taxes and penalties on the excess. Track your total contributions carefully, especially if you have accounts at two different banks.

How long does it take to open an HSA?

Online applications usually take 10 to 15 minutes and are approved within one business day. Phone or in-person applications may take longer if documents need to be verified. Once approved, it takes one to three business days for the account to be fully set up and ready to fund.

Do I need to choose an investment option when I open the account?

No. You can open a savings-only HSA and invest the money later, or choose an investment option at the time of opening. Many people start with savings and move money to investments once the balance reaches a certain amount. You can change your investment choices at any time.