You need a high-deductible health plan first, then pick a bank or provider to hold the account

Opening an HSA requires two separate things: enrollment in a high-deductible health plan (HDHP) through your employer, the marketplace, or Medicare Advantage, and then opening the actual savings account at a bank, credit union, or HSA provider. You cannot open an HSA without the HDHP — the account exists only to hold money for that specific plan. Most people open the account after they enroll in the HDHP, though some employers set up accounts automatically for their employees.

The timeline matters: you can only open an HSA during the same calendar year you enroll in an HDHP, or within a short grace period if you enroll late in the year. If you switch to an HDHP in March, you can open an account in March. If you switch in December, you have until April 15 of the following year to open one for that tax year.

Key Takeaways

  • You must be enrolled in an HDHP before you can open an HSA; the two are linked and you cannot have one without the other.
  • You can open an account at a bank, credit union, or dedicated HSA provider like Fidelity, Lively, or HealthEquity, depending on what features and fees matter to you.
  • The account opening process itself takes 10 to 20 minutes online and requires your Social Security number, proof of HDHP enrollment, and a funding method.
  • You can contribute money immediately after opening, but contributions for a given tax year must be made by April 15 of the following year to count toward that year's limit.

Confirm your HDHP enrollment before you start

Before you contact any bank or HSA provider, verify that your health plan actually qualifies as an HDHP. Your employer's benefits materials or your insurance card should state this clearly. If you enrolled through the marketplace, log into your account and check your plan details — the plan name or description will say "high-deductible" or "HDHP." If you are on Medicare, only certain Medicare Advantage plans may have access to, and your plan documents will specify this.

You will need proof of this enrollment when you open the account. Have your insurance card, plan documents, or a screenshot of your marketplace enrollment ready. Some providers ask for your policy number; others just need confirmation that you are covered by an HDHP as of the date you open the account.

Choose where to open your account

You have three main types of places to open an HSA: your employer's designated provider (if they offer one), a bank or credit union, or an independent HSA provider. Each has different features and fees.

Employer-sponsored accounts are often the easiest route because your employer may handle setup and payroll deductions automatically. Ask your benefits administrator whether they offer this. If they do, you may have limited choice of provider, but the process is usually streamlined.

Banks and credit unions offer HSA accounts alongside checking and savings. These are straightforward if you already bank there, but some charge monthly maintenance fees ($2 to $5) or require minimum balances. They typically do not offer investment options — your money sits in a savings account earning minimal interest.

Dedicated HSA providers like Fidelity, HealthEquity, Lively, and Optum Bank specialize in HSAs and often have lower or no monthly fees, investment options (stocks, mutual funds, bonds), and mobile apps. They are designed for people who want to invest HSA money long-term rather than just spend it on immediate medical costs. These providers are independent of your employer and health plan.

Compare fees, investment options, and customer service before you choose. Some providers waive monthly fees if you maintain a certain balance or set up automatic contributions.

Complete the account opening application

Once you have chosen a provider, go to their website or visit in person if it is a bank branch. The application process is online for most providers and takes 10 to 20 minutes. You will need:

  • Your Social Security number
  • Your date of birth
  • Your address
  • Your HDHP policy number or proof of enrollment (insurance card, plan documents, or employer confirmation)
  • A funding method: bank account for transfers, debit card, or employer payroll deduction

Some providers ask you to confirm your HDHP coverage directly in the application form by entering your plan details. Others send a verification request to your health plan automatically. If the provider cannot verify your coverage electronically, they may ask you to upload a copy of your insurance card or a letter from your employer confirming your HDHP enrollment.

After you submit the application, most providers approve it within one to three business days. You will receive a confirmation email with your account number and login credentials.

Fund your account and set up contributions

After approval, you can add money to your HSA in three ways: a one-time transfer from your bank account, ongoing automatic transfers, or payroll deductions through your employer.

Payroll deductions are the most common method if your employer offers them. The money comes out of your paycheck before taxes, which reduces your taxable income. Contact your employer's payroll or benefits department to set this up — they will coordinate with your HSA provider. Payroll deductions typically begin in the pay period after you enroll.

Bank transfers let you move money from your checking or savings account to your HSA whenever you want. Most providers offer this through their website or app. Transfers usually clear within one to three business days.

One-time contributions can be made by check, wire transfer, or ACH, depending on the provider. Some providers also accept contributions by credit card, though this may trigger a processing fee.

Keep track of your annual contribution limit. For 2024, the limit is $4,150 for individual coverage and $8,300 for family coverage (these amounts change yearly). If you enroll in an HDHP partway through the year, you can still contribute the full annual amount, but you must make all contributions by April 15 of the following year for them to count toward that tax year.

What happens after your account is open

Once your account is active, you can use it to pay for may have access to medical expenses — doctor visits, prescriptions, dental work, vision care, and many other health costs. You can pay out of pocket and then reimburse yourself from the HSA, or use an HSA debit card if your provider issues one.

Keep receipts for all medical expenses you pay with HSA money. The IRS does not require you to submit them when you file taxes, but you must keep them in case of an audit. If you use HSA money for non-medical expenses before age 65, you owe income tax on that amount plus a 20% penalty. After age 65, you can withdraw money for any reason without the penalty, though you still owe income tax on non-medical withdrawals.

Your HSA is yours to keep even if you change jobs or health plans. The account and the money in it stay with you. If you leave an HDHP, you cannot make new contributions, but you can continue to use the money already in the account for may have access to medical expenses.

Frequently Asked Questions

Can my employer force me to use their HSA provider, or can I open one elsewhere?

If your employer offers payroll deductions, they typically require you to use their designated provider for those deductions. However, you can open a separate HSA at another provider and fund it yourself through bank transfers. Some employers allow you to split contributions between their provider and another one — ask your benefits department.

What if I enroll in an HDHP but do not open an HSA right away?

You can open an HSA anytime during the same calendar year you enroll in an HDHP, or until April 15 of the following year. After that deadline, you lose the opportunity to contribute for that tax year. However, if you enroll in an HDHP in November or December, you have until April 15 of the next year to open an account and contribute the full annual amount.

Do I have to invest my HSA money, or can I just leave it in savings?

You can do either. Banks and credit unions typically keep your money in a savings account earning interest. Dedicated HSA providers let you invest in mutual funds, stocks, or bonds if you want. Many people keep a portion in savings for near-term medical expenses and invest the rest for long-term growth.

What if my employer does not offer an HSA but I have an HDHP?

You can open an HSA on your own at any bank or dedicated HSA provider. You will fund it through bank transfers or automatic contributions rather than payroll deduction, but the account works the same way. You will need to track and report your contributions on your tax return yourself.

Can I open an HSA if I am on Medicare?

No, not if you are receiving Medicare Part A or Part B. However, if you are enrolled in a Medicare Advantage plan that qualifies as an HDHP and you have not yet enrolled in Medicare Part A or B, you may be able to open one. Once you enroll in any part of Medicare, you must stop contributing to an HSA, though you can continue to use money already in the account.