Can I Use My FSA for My Spouse? Limits, HSA Overlap, and Claims

Yes, you can use your FSA for your spouse. A health care Flexible Spending Account covers eligible medical expenses for you, your legal spouse, and your tax dependents, and your spouse does not need to be enrolled in your employer’s health plan for their costs to qualify.¹

Who Counts as a Spouse

Federal tax law decides who your spouse is for FSA purposes. Under Internal Revenue Code Section 7703, you are considered married if you are legally married under the laws of any state as of the end of the tax year.² Since Revenue Ruling 2013-17, the IRS has recognized all legal marriages, including same-sex marriages, for every federal tax purpose regardless of the state you currently live in.³

Domestic partnerships and civil unions that do not amount to a legal marriage under state law do not meet the IRS definition of spouse. A partner in that situation can still have their expenses reimbursed from your FSA, but only if they qualify as your tax dependent under the “qualifying relative” rules in Section 152, which require them to live with you all year, receive more than half their support from you, and have gross income below the annual exemption threshold.⁴

Your Spouse Does Not Need Your Insurance

The FSA works independently of any specific health plan.⁵ If your spouse has insurance through their own employer, a marketplace plan, or Medicare, their out-of-pocket costs under any of those plans are still reimbursable from your account. What matters is whether the expense itself meets the IRS definition of eligible medical care, not which insurance policy generated the bill.

What You Can Pay For

The IRS defines an eligible medical expense broadly: any cost for diagnosing, treating, or preventing disease, or for affecting any part or function of the body.⁶ Applied to your spouse, that covers most of their routine out-of-pocket health care:

Doctor and hospital costs: copays, deductibles, coinsurance, and charges insurance doesn’t cover.
Prescription medications requiring a prescription from a licensed provider.
Dental care including cleanings, fillings, extractions, braces, dentures, and X-rays.
Vision care including eye exams, prescription glasses, and contact lenses.
Mental health services such as therapy, psychiatric care, and counseling.

Over-the-counter medications, including pain relievers, allergy medicine, and cold remedies, are eligible without a prescription. Menstrual care products such as pads, tampons, cups, and menstrual underwear also qualify.⁷

What Doesn’t Qualify

Costs that only support general health, without treating or preventing a specific medical condition, are not reimbursable. Gym memberships, vitamins, nutritional supplements, and cosmetic procedures fall in this category. If a doctor prescribes one of these to treat a diagnosed condition, such as a specific vitamin for a documented deficiency, it can become eligible.⁶

Contribution Limits When You Both Have an FSA

For the 2026 plan year, each employee can contribute up to $3,400 to a health care FSA through pre-tax salary reductions.⁸ The cap applies per person, not per household. When both you and your spouse have access to an FSA through your respective jobs, each of you can contribute the full $3,400, so your household can set aside up to $6,800 in pre-tax health care dollars for the year.

One rule matters here: you cannot submit the same expense to both accounts. If your spouse has a $200 dental bill, only one of you can seek reimbursement for it. A quick agreement about which account covers which categories of expenses helps you avoid denied claims.

If Your Spouse Wants an HSA

The interaction between your FSA and a spouse’s Health Savings Account is where households run into trouble. A general-purpose health FSA counts as “other health coverage” under HSA eligibility rules. If you enroll in a general-purpose FSA, your spouse cannot make HSA contributions, even when they carry their own high-deductible health plan.¹

The workaround is a limited-purpose FSA, which reimburses only dental and vision expenses. Because it does not cover general medical costs, it is not disqualifying coverage under federal HSA rules.⁹ Not every employer offers a limited-purpose option, so check during open enrollment if your household plans to run both accounts.

What Divorce Does to Eligibility

Your FSA can reimburse expenses your spouse received, or that you paid for, while you were still married. IRS Publication 502 requires that you be married either when the medical services were provided or when you paid for them.⁶ Once the divorce is final, future medical costs for your former spouse are no longer eligible. Divorce is also a qualifying life event, which lets you adjust your FSA election within the window your plan allows, generally 30 to 60 days after the divorce becomes final.

Deadlines You Should Know

Health FSAs are generally use-it-or-lose-it accounts. Any balance left at the end of the plan year is forfeited unless your employer offers one of two safety nets.¹ Knowing which one your plan uses matters when you are trying to spend down a balance on a spouse’s care.

Grace period: your plan may give you up to 2 months and 15 days after the plan year to incur new eligible expenses using leftover funds.¹⁰
Carryover: your plan may instead let you roll up to $680 of unused 2025 funds into 2026, with anything above that forfeited.⁸

Your employer can offer one of these features or the other, but not both for the same FSA, and some plans offer neither. Most plans also have a separate run-out period, typically around 90 days after the plan year ends, during which you can submit claims for expenses that were already incurred within the plan year. The run-out gives you paperwork time; it does not let you incur new expenses.

Submitting a Claim for Your Spouse

How you claim reimbursement depends on how you paid. If you used an FSA debit card at a provider or pharmacy, the charge may be approved automatically, but the IRS still requires your administrator to verify eligibility. You may be asked to send an itemized receipt showing the patient’s name, provider name, date of service, amount, and a description of the service or product. A credit card statement or plain register receipt is not enough.

If you paid out of pocket, you submit a claim through your administrator’s portal, app, or paper form with the same documentation:

Patient name as it appears on the medical record — your spouse’s name.
Provider name (doctor, clinic, pharmacy, or other).
Date of service.
Description of the service or product.
Amount paid after any insurance adjustments.

An Explanation of Benefits from your spouse’s insurer, or an itemized receipt from the provider, is usually the cleanest documentation. Reimbursement typically arrives by direct deposit or check within a few business days, though timing varies by administrator.

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 7703 – Determination of Marital Status
3
Internal Revenue Service. Same-Sex Marriages Now Recognized for Federal Tax Purposes
4
Office of the Law Revision Counsel. 26 USC 152 – Dependent Defined
5
HealthCare.gov. Using a Flexible Spending Account (FSA)
6
Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
7
FSAFEDS. Eligible FSA Expenses
8
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
9
Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts
10
Internal Revenue Service. Modification of Use-or-Lose Rule for Health Flexible Spending Arrangements