The Basic Requirements for an HSA

You can open a Health Savings Account if you are enrolled in a high-deductible health plan (HDHP) and meet three conditions: you have no other health coverage, you are not claimed as a dependent on someone else's tax return, and you are not enrolled in Medicare. The HDHP itself sets the floor—you cannot have an HSA without one. If your current plan does not meet the IRS definition of a high-deductible plan, you cannot open an HSA, even if you meet the other requirements.

The IRS updates the deductible thresholds each year. For 2024, a plan qualifies as high-deductible if your annual deductible is at least $1,600 for individual coverage or $3,200 for family coverage. The plan's out-of-pocket maximum cannot exceed $8,050 for individual coverage or $16,100 for family coverage. Your employer or insurance company will tell you whether your plan meets these numbers—you do not have to calculate it yourself.

Timing matters. You can open an HSA only during the months you are actually enrolled in an HDHP. If you switch to a different type of plan mid-year, you lose HSA may be able to access for the rest of that year, though you keep the money already in the account.

Key Takeaways

  • You must be enrolled in a high-deductible health plan with a deductible of at least $1,600 (individual) or $3,200 (family) to open an HSA.
  • You cannot have an HSA if you have other health coverage, are claimed as a dependent, or are enrolled in Medicare, even if you have an HDHP.
  • Your employer or insurance company confirms whether your plan qualifies as high-deductible—the IRS updates the thresholds each year.
  • You can only open an HSA during months when you are enrolled in an HDHP; switching plans mid-year ends your HSA may be able to access for that year.

When Other Health Coverage Disqualifies You

Having any other health coverage besides your HDHP blocks you from opening an HSA. This includes coverage through a spouse's employer, a parent's plan (if you are under 26), Medicaid, or a separate accident or dental plan. The rule is strict: even limited coverage counts. If your spouse has a traditional health plan and you are covered under it, you cannot open an HSA on your own HDHP, even if you pay for your own plan separately.

There are narrow exceptions. Coverage for specific conditions—like workers' compensation, military coverage, or Veterans Affairs benefits—does not block HSA may be able to access. Accident-only plans, dental-only plans, and vision-only plans also do not count as disqualifying coverage. If you are unsure whether a plan you have counts as "other coverage," contact the plan administrator or your HR department and ask directly whether it would prevent you from opening an HSA.

Medicare Enrollment Ends HSA may be able to access

Once you enroll in any part of Medicare—Part A, Part B, or Part D—you can no longer contribute to an HSA, even if you also have an HDHP. This is true whether Medicare is your primary coverage or secondary. You keep the money already in your HSA and can spend it on medical expenses, but you cannot add new contributions.

The month you turn 65, you become may be able to access for Medicare. If you want to avoid automatic enrollment, you must actively decline it. Many people do decline Part B to keep working and maintain HSA may be able to access, but once you enroll in any part, the HSA contribution door closes. If you are self-employed or still working past 65, talk to your benefits advisor about the timing and what it means for your HSA before you turn 65.

Dependent Status and Tax Filing

If someone else claims you as a dependent on their tax return, you cannot open an HSA, regardless of whether you have your own HDHP. This rule applies even if you pay for your own health plan. The IRS considers you ineligible because you are claimed as a dependent, not because of your coverage itself.

This most often affects young adults. If you are over 18 and your parents still claim you as a dependent, you cannot open an HSA until they stop. Once you are no longer claimed as a dependent—usually when you file your own return and your parents no longer meet the IRS rules to claim you—you become may be able to access. Check with your parents or tax preparer about when you will no longer be claimed before you try to open an account.

Self-Employed and Freelancer may be able to access

Self-employed people and freelancers can open an HSA if they purchase an HDHP on the individual market and meet all other requirements. You do not need an employer to sponsor the plan. You can buy an HDHP directly from an insurance company or through the Health Insurance Marketplace, and as long as it meets the IRS deductible thresholds, you are may be able to access to open an HSA.

If you are self-employed and have employees, those employees can also open HSAs if they are enrolled in your company's HDHP. The rules are the same as for any employer plan. You will need to work with a payroll processor or benefits administrator to set up the HSA infrastructure, but the may be able to access rules do not change based on company size.

Spouses and Family Coverage

If you and your spouse both have individual HDHPs through separate employers, you can each open your own HSA. The accounts are separate and the contribution limits explore to each person individually. If you are covered under a family HDHP together, only one of you can open an HSA—the person whose name is on the policy or the one designated as the account holder. The other spouse cannot open a separate account while covered under the same family plan.

Some families choose to have one spouse on a family HDHP (with an HSA) and the other on a separate individual HDHP (with their own HSA). This is allowed and sometimes makes sense for tax planning, but both plans must meet the high-deductible definition. Talk to your HR department or insurance broker about whether this structure is possible with your employer's plans.

What Happens If Your Plan Changes Mid-Year

If you start the year in an HDHP and switch to a traditional plan mid-year, you lose HSA may be able to access when ready. You keep the money in your account and can continue to spend it on medical expenses, but you cannot make new contributions for the rest of that year. If you switch back to an HDHP later in the year, you do not regain may be able to access until the next calendar year.

The reverse is also true: if you start the year in a traditional plan and switch to an HDHP mid-year, you can open an HSA and begin contributing from that month forward. Your contribution limit for the year is prorated based on how many months you were enrolled in the HDHP. If you switched in July, for example, you could contribute six months' worth of the annual limit.

Frequently Asked Questions

Can I open an HSA if my spouse has Medicare but I don't?

No. If you are married and file taxes jointly, your spouse's Medicare enrollment disqualifies you both from HSA contributions. If you file separately, you may be able to open an HSA, but the rules are complex and depend on your specific situation. Consult a tax professional before assuming you are may be able to access.

What if I have a plan with a $1,500 deductible—can I open an HSA?

No. Your deductible must be at least $1,600 for individual coverage or $3,200 for family coverage. A plan with a lower deductible does not meet the IRS definition of a high-deductible plan, even if it is otherwise similar. Check your plan documents or call your insurer to confirm the exact deductible amount.

Do I lose my HSA if I change jobs and get a new health plan?

You keep the HSA itself and the money in it. If your new employer's plan is also an HDHP, you can continue contributing. If it is not, you can no longer contribute but can still spend the money on medical expenses. The account does not close—it just stops accepting new contributions.

Can a full-time student open an HSA?

Only if they are not claimed as a dependent on their parents' tax return and are enrolled in an HDHP. Many students are claimed as dependents, which blocks HSA may be able to access. If you are independent and have your own HDHP, you can open an account. Check with your parents about whether you are still claimed before you try.

What if I am not sure whether my plan is high-deductible?

Contact your employer's HR department or your insurance company directly and ask whether your plan meets the IRS definition of a high-deductible health plan. They can give you a yes or no answer and point you to the specific deductible and out-of-pocket maximum amounts. Do not guess—getting this wrong means opening an account you cannot legally contribute to.