You can open an HSA if you have a specific type of health insurance

To open a Health Savings Account (HSA), you need to be enrolled in a High Deductible Health Plan (HDHP). This is the one requirement that matters most. If your current health insurance is not an HDHP, you cannot open an HSA, even if you want to save money for medical expenses.

An HDHP is a real insurance plan — it covers doctor visits and hospital care just like other plans do. The difference is that you pay more out of your own pocket before the insurance kicks in. That higher out-of-pocket amount is called the deductible. Because you are responsible for more of your costs upfront, the law allows you to set aside money in an HSA without paying income tax on it, as long as you use it for medical expenses.

Your employer may offer an HDHP as one of their health insurance choices, or you can buy one on your own through the health insurance marketplace in your state. If you are not sure whether your plan qualifies, check your insurance documents or call your insurance company and ask: "Is this a High Deductible Health Plan?"

Key Takeaways

  • You must be enrolled in a High Deductible Health Plan to open an HSA; other types of health insurance do not allow HSA accounts.
  • You cannot be claimed as a dependent on someone else's tax return and cannot be enrolled in Medicare to open an HSA.
  • You can open an HSA through a bank, credit union, or financial services company — not through your insurance company.
  • You can open an HSA at any time during the year, but contributions made after the tax year ends may have limits on when you can make them.
  • If your employer offers an HSA, they may set up payroll deductions so money goes into your account before taxes are taken out of your paycheck.

Other requirements you need to meet

Beyond having an HDHP, there are a few other conditions. You cannot be claimed as a dependent on someone else's tax return — this usually means you are an adult supporting yourself. You also cannot be enrolled in Medicare, the federal health insurance program for people 65 and older. If you turn 65 and enroll in Medicare, you can no longer contribute new money to an HSA, though you can keep the account and spend what is already in it.

You must be a U.S. citizen or resident alien for tax purposes. If you are not sure whether you meet this requirement, a tax professional or your bank can help you figure it out.

These rules exist because HSAs are tied to the tax system. The government allows you to avoid paying income tax on HSA contributions and the money that grows inside the account, so in return, the rules are specific about who can use them.

Where to open an HSA

You do not open an HSA through your health insurance company or your employer's benefits office. Instead, you open it at a financial institution — a bank, credit union, or investment company that offers HSA accounts. Your employer may have partnered with a specific provider and may even contribute money to your account, but you are the one who chooses where to open it.

To open an account, you will need to provide basic information: your name, address, Social Security number, and proof that you are enrolled in an HDHP. Most providers ask you to show a copy of your insurance card or a letter from your insurance company stating that your plan is an HDHP. You can usually open an account online in a few minutes.

Different providers offer different features. Some charge monthly fees, some do not. Some let you invest the money in the account like a retirement account, and some keep it in a straightforward savings account. Compare a few options before you choose — the account you pick now can be changed later if you want to move your money elsewhere.

How to fund your HSA

Once your account is open, you can put money into it in two main ways. If your employer offers an HSA, you can ask your payroll or benefits department to deduct money from your paycheck and send it directly to your HSA. This is the most common way, because the money goes in before your employer takes out income tax, which saves you money.

You can also deposit money yourself by transferring it from your bank account or by mailing a check to the HSA provider. These contributions still count toward the tax benefit, but you will need to claim them on your tax return to get the tax break. If you are self-employed or do not have an employer offering an HSA, this is your only option.

There is a limit to how much you can contribute each year. The limit changes each year and depends on whether your HDHP covers just you or also covers your family. For the most current limit, check with your HSA provider or the IRS website.

What happens if you change health insurance

If you switch to a health plan that is not an HDHP, you can no longer contribute new money to your HSA. However, you keep the account and the money already in it. You can continue to spend that money on medical expenses without paying taxes on it, for as long as you live.

If you go back to an HDHP later — whether with the same employer or a different one — you can start contributing to an HSA again. Your old account is still yours, and you can add money to it or open a new one. Many people keep the same HSA for years, even if they change jobs or insurance plans.

Timing and tax year rules

You can open an HSA at any time during the year. However, if you want to contribute money for a specific tax year, there is a important date. You have until the tax filing important date of the following year — usually April 15 — to make contributions that count toward that tax year. For example, you can contribute money for the 2024 tax year until April 15, 2025.

If you enroll in an HDHP partway through the year, you can still open an HSA and contribute a portion of the annual limit, based on how many months you were enrolled. Some people use a special rule called the "last month rule" that lets them contribute the full year's amount if they are enrolled on December 1, but this rule has conditions — ask your HSA provider if it applies to you.

What you need to have ready

Before you open an account, gather these documents. You will need proof that you are enrolled in an HDHP — usually your insurance card or a letter from your insurance company. You will also need your Social Security number and a government-issued ID. If you are opening the account online, you may be able to upload these documents or type in the information.

If your employer is setting up payroll deductions, ask your benefits department for the HSA provider's routing number and account number so they can send the money to the right place. This usually takes a few days to set up, so plan ahead if you want contributions to start in a specific month.

Frequently Asked Questions

What if my employer does not offer an HDHP?

You can buy an HDHP on your own through your state's health insurance marketplace, usually at healthcare.gov or your state's website. Once you are enrolled, you can open an HSA at any bank or financial company that offers them. You will contribute money yourself rather than through payroll deductions.

Can I open an HSA if I am self-employed?

Yes. You need to be enrolled in an HDHP, which you can buy through the health insurance marketplace. Once you have the plan, you can open an HSA and contribute money yourself. You claim the contributions on your tax return to get the tax benefit.

Do I have to use the HSA provider my employer chose?

No. Your employer may recommend or set up payroll deductions with a specific provider, but you can open an HSA elsewhere if you prefer. If you do, you will need to make contributions yourself rather than through payroll, or ask your employer to send the money to your chosen provider instead.

What if I do not have an HDHP yet but want to open an HSA?

You cannot open an HSA without an HDHP. First, enroll in an HDHP through your employer or the health insurance marketplace. Once your coverage starts, you can open an HSA. The process usually takes just a few days.

Can I open multiple HSAs?

You can have accounts at different providers, but you can only contribute up to the annual limit across all of them combined. Most people keep one HSA to avoid confusion and to track their balance easily.