Can I Use My HSA for Someone Not on My Insurance?

Yes, you can use your HSA for someone not on your insurance, as long as that person is your spouse, a tax dependent, or a qualifying relative under IRS rules. The tax code separates two questions that sound similar but aren’t: who has to be enrolled in your high-deductible health plan for you to contribute to an HSA (just you), and whose medical bills you’re allowed to pay from that HSA tax-free (a much wider group defined by family and tax relationships).¹ Your spouse can carry their own employer plan, your college-age child can be on a school policy, your mother can be on Medicare, and HSA dollars can still cover their qualified medical expenses without tax or penalty.

The underlying definition of “medical care” the HSA rules borrow is broad, covering diagnosis, treatment, prevention, and long-term care.² What limits tax-free HSA spending isn’t the type of expense so much as the identity of the person receiving the care. Three categories qualify.

Your Spouse

A legal spouse is always an eligible recipient of tax-free HSA distributions, no matter what insurance they carry.¹ Filing status doesn’t change this. Whether you and your spouse file jointly or separately, HSA money can pay their medical bills.³

Domestic partners and unmarried partners do not count as spouses for HSA purposes, even where state law recognizes the partnership. If you spend HSA funds on a partner you’re not married to, the distribution is non-qualified unless that partner independently qualifies as your tax dependent. Non-qualified distributions are taxed as ordinary income and hit with an additional 20% tax.⁴

Your Dependent Children

You can use HSA funds tax-free for a child’s medical care as long as the child qualifies as your tax dependent. Biological children, stepchildren, adopted children, and foster children placed with you by an authorized agency all count. The child must be under 19 at the end of the calendar year, under 24 if a full-time student, or any age if permanently and totally disabled.⁵

Whether the child is on your HDHP, a spouse’s employer plan, or their own policy doesn’t matter. The test is the tax-dependency relationship, not the insurance card.

The Age 26 Insurance Gap

The Affordable Care Act lets adult children stay on a parent’s health plan until age 26.⁶ The IRS age cutoff for HSA-eligible dependents is 19, or 24 for full-time students. A 23-year-old who finished college and is working full-time may still sit on your health plan, but they no longer meet the dependent age test, so paying their medical bills from your HSA can trigger income tax plus the 20% penalty. Parents commonly assume the ages match. They don’t.

Qualifying Relatives, Including Aging Parents

Beyond spouses and children, the IRS recognizes a category called “qualifying relatives.” This is where families supporting an elderly parent, an adult sibling, or another relative often find an opening they didn’t know they had.

A qualifying relative must meet four tests:⁵

You provide more than half of the person’s total financial support for the year.
The person’s gross income falls below the annual threshold the IRS sets (roughly $5,300 for 2026, adjusted for inflation).
The person either lives with you for the whole year as a household member or is a specific type of relative such as a parent, sibling, aunt, uncle, or in-law.
The person isn’t already someone else’s qualifying child.

There’s no age limit for qualifying relatives. If you’re covering more than half of your mother’s expenses and her income stays below the threshold, her prescriptions, medical equipment, hearing aids, and long-term care costs can be paid from your HSA tax-free. She doesn’t have to live with you if she meets the relationship test on her own (a parent does), and she doesn’t have to be on your health plan.

The HSA-Only Expansion of “Dependent”

For HSA spending purposes, the tax code deliberately widens the dependent definition by ignoring three disqualifiers that would otherwise apply.⁴ Someone can still be your “dependent” for HSA purposes even if:

They filed a joint return with their spouse.
Their gross income was too high to pass the qualifying relative income test.
You or your spouse could be claimed as a dependent on someone else’s return.

IRS Publication 969 and the Form 8889 instructions both confirm this expanded definition.³ The practical consequence matters a lot for adult children of aging parents: a parent whose Social Security or pension income exceeds the qualifying relative income threshold can still be an eligible HSA recipient if you provide more than half their support and they meet the other tests. The income test is waived for HSA purposes only.

What It Costs to Get It Wrong

If you use HSA funds for someone who doesn’t fit any of these categories, two things happen. The distribution is added to your taxable income for the year, and the IRS assesses an additional 20% tax on top.⁴ On a $3,000 distribution, the 20% alone is $600, before income tax.

Three exceptions remove the 20% additional tax, though the distribution is still taxed as ordinary income:

You are 65 or older when you take the distribution.
You are disabled as defined by the tax code.
The distribution goes to a beneficiary after the account holder’s death.

Your HSA custodian reports distributions on Form 1099-SA, and you report them on Form 8889 with your tax return. Any non-qualified amount flows through Form 8889, Part II onto Form 1040.⁷

One more limit worth flagging: you can’t reimburse the same expense from both an HSA and an FSA. The IRS asks you to certify that qualified medical expenses haven’t been paid or reimbursed from another source.¹ If a spouse’s FSA already paid the bill, HSA money can’t be pulled for the same charge.

Records to Keep

The IRS doesn’t ask for receipts when you take a distribution, but if a return is examined, you need to produce them. Any distribution for a family member who isn’t on your health plan needs two kinds of proof: that the expense qualifies and that the person qualifies.

For the expense, keep itemized receipts showing the date of service, provider name, description of the care or item, and the amount charged. If insurance paid part, keep the explanation of benefits showing what remained. For the person, keep whatever establishes the relationship: a marriage certificate for a spouse, a birth certificate for a child, or tax returns showing you claimed the person as a dependent.¹

The IRS generally has three years from your filing date to assess additional tax, so hold these records at least that long.⁸ For qualifying relatives, write a short note each year showing how the support and income tests were met. Reconstructing that math years later is much harder than capturing it in the moment.

1
Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans
2
Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses
3
Internal Revenue Service. Instructions for Form 8889 (2025)
4
Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts
5
Internal Revenue Service. Dependents
6
HealthCare.gov. Health Insurance Coverage for Children and Young Adults Under 26
7
Internal Revenue Service. Reporting HSA Contributions, Distributions, and Deductions
8
Internal Revenue Service. Topic No. 305, Recordkeeping