Can I Use My FSA Card for Someone Else: Spouses and Dependents

You can use your FSA card for someone else only if that person is your legal spouse, your child under age 27, or someone who qualifies as your tax dependent under the Internal Revenue Code. Anyone outside those three categories, including a domestic partner, a friend, or a parent with too much income, is off-limits, and using the card for them will trigger a repayment demand and can turn your pre-tax dollars into taxable wages.

Spouses and Children Under 27

Your legal spouse is always eligible, whether or not they’re covered on your health insurance. No extra paperwork is required beyond the marriage itself.

Your children are eligible through the end of the tax year in which they turn 26. Section 105(b) of the Internal Revenue Code, as amended by the Affordable Care Act, lets you use FSA funds for any child who has not turned 27 by year-end, regardless of whether they live with you, file their own taxes, are married, or qualify as your tax dependent.¹ “Child” includes biological children, stepchildren, adopted children, and eligible foster children.²

This is the widest category. A married 25-year-old who files their own return and hasn’t lived with you in years is still eligible on your FSA.

Qualifying Relatives: How a Parent or Other Family Member Could Qualify

Beyond spouse and children under 27, your FSA can cover anyone who meets the IRS definition of a qualifying relative. This is the route that lets some people legitimately pay a parent’s or an adult sibling’s medical bills with FSA dollars. Every one of these tests must be satisfied at the same time:

Support test. You must provide more than half of the person’s total financial support for the calendar year.²
Income test. The person’s gross income must be below $5,050 for 2026.³
Relationship or residency. The person must either be a specified relative (parent, sibling, aunt, uncle, in-law, and certain others listed in the tax code) or must live with you as a member of your household for the entire year.²
Citizenship or residency. The person must be a U.S. citizen, U.S. national, U.S. resident alien, or a resident of Canada or Mexico.³
Not someone else’s qualifying child. The person cannot be claimed as a qualifying child by any other taxpayer.²

The income test is where most people get stuck. A parent collecting Social Security, drawing a pension, or working part-time will often clear the $5,050 line, and once they do, no amount of financial support from you makes them eligible. If you’ve been paying a parent’s medical bills with your FSA and their income crosses that threshold, every reimbursement for the year becomes an ineligible expense.

An Adult Child Who Is Permanently Disabled

A child who has aged out of the under-27 rule can still be covered if they are permanently and totally disabled and meet the qualifying relative tests. Permanently and totally disabled means the person cannot engage in any substantial gainful activity because of a physical or mental condition, and a doctor has determined the condition has lasted or is expected to last at least a year, or can lead to death.⁴ Keep a letter from the treating provider on file in case your plan administrator asks.

Who Doesn’t Qualify

The list of people who feel like they should qualify but don’t is longer than most cardholders expect.

Parents. Ineligible unless they meet every qualifying relative test, which most parents fail on the income side because of Social Security, retirement, or wages.
Domestic partners. Federal tax law does not treat registered domestic partners or civil union partners as spouses, so they cannot use your FSA as a spouse. A partner can qualify only by meeting every qualifying relative requirement: living with you the entire year, earning under $5,050 in gross income, and receiving more than half their support from you. That combination is rare for a working adult.⁵
Adult children age 27 or older. Once your child has turned 27 by the end of the tax year, the automatic Section 105(b) coverage ends. From that point, they’d need to satisfy the qualifying relative rules, including the low income cap and the over-half support test.¹
Friends, roommates, cousins, nieces, and other extended family. These relationships don’t appear on the specified-relative list, so the person would have to live with you as a household member for the entire year and meet the income and support tests. Otherwise, no.

Emotional closeness and generosity don’t move the analysis. The only question the IRS asks is whether the person fits the statutory definition of spouse, child under 27, or qualifying relative.

Divorced or Separated Parents

Section 105(b) is unusually generous here. A child subject to the special rules for divorced or separated parents is treated as a dependent of both parents for health reimbursement purposes.¹ Either parent can use their own FSA for the child’s medical expenses, even when only one parent claims the child as a tax dependent.

Three conditions have to be met. The child must be in the custody of one or both parents for more than half the year, the parents together must provide more than half the child’s support, and the parents must be divorced, legally separated, separated under a written agreement, or living apart for the last six months of the year.⁶ When those conditions are satisfied, either parent can submit the child’s bills to their own FSA regardless of the custody split or which parent claims the exemption.

What Happens if You Use the Card for Someone Ineligible

Your plan administrator is required to correct improper charges, and the process escalates the longer it goes unresolved.

Card Shutoff and Repayment Request

The first step is deactivation of your FSA debit card. It stays off until the improper amount is recovered, so any legitimate expenses in the meantime have to be submitted manually.⁷ Your employer will tell you that you owe the plan the full amount of the ineligible charge. Writing a check back to the plan resolves it.

Offset Against Future Claims or Wages

If you don’t pay it back directly, the plan can apply your next legitimate claim against the debt. Submit a $300 pharmacy receipt while owing $200, and you’ll be reimbursed $100. Your employer can also withhold the amount from your paycheck, subject to wage-and-hour law limits.

Taxable Income at Year-End

If none of those correction paths work, the unrecovered amount gets reported as taxable income on your W-2. Those dollars lose their pre-tax status entirely, and you’ll owe federal income tax, Social Security tax, and Medicare tax on them, the same taxes you avoided by contributing to the FSA in the first place.⁸ Depending on your bracket, that can mean 30% or more in combined tax on money already spent on something that didn’t qualify.

Records to Keep for a Dependent’s Expenses

Every FSA transaction must be substantiated by an independent third party. Self-certification is never enough.⁸ When you’re paying for someone else’s care, the paperwork matters more, because your plan needs to confirm both that the expense qualifies and that the patient is an eligible person. Good documentation shows:

The full name of the patient who received care, not just the account holder.
The date of service or purchase.
A description of the service or product detailed enough to confirm it’s a medical expense.
The dollar amount you’re responsible for after insurance.⁹

An Explanation of Benefits from the insurer captures all four in one document and is the cleanest response to a substantiation request. Pharmacy receipts work well too because they print the patient name, drug, and date. Credit card statements and register receipts that show only a merchant and a dollar figure won’t satisfy the plan.

1
GovInfo. 26 USC 105 – Amounts Received Under Accident and Health Plans
2
Office of the Law Revision Counsel. 26 USC 152 – Dependent Defined
3
Internal Revenue Service. Dependents
4
Internal Revenue Service. Disability and the Earned Income Tax Credit (EITC)
5
Internal Revenue Service. Answers to Frequently Asked Questions for Registered Domestic Partners and Individuals in Civil Unions
6
Internal Revenue Service. Publication 502, Medical and Dental Expenses
7
Internal Revenue Service. Revenue Ruling 2003-43 – Amounts Received Under Accident and Health Plans
8
Internal Revenue Service. Chief Counsel Advice Memorandum – Claims Substantiation for Payment or Reimbursement of Medical and Dependent Care Expenses
9
Internal Revenue Service. Notice 2006-69 – Additional Use of Cards to Substantiate Health FSA and HRA Medical Expenses