Information checked: 2026-09-10 · Maintenance label: Annual and policy variable
Flexible spending account money can disappear under a plan's use-it-or-lose-it rules, yet rushing into random year-end purchases creates denied claims.
The practical answer is to separate federal expense eligibility from your employer plan's substantiation and deadline rules. The IRS defines medical care; the plan administrator decides what documentation and submission method it requires.
Key takeaway
A health FSA generally reimburses qualified medical expenses for you, your spouse, and dependents. Medical, dental, vision, over-the-counter medicines, and menstrual care products may qualify, but plan documents control the claim process and deadline. Do not assume an HSA rule, store label, or debit-card approval proves your FSA claim.
Table of contents
- What a health FSA can reimburse
- Medical, dental, and vision examples
- Products that need a closer look
- Deadlines belong to the plan
- How to build a clean claim
- Frequently asked questions
- Summary
Related guides
- HSA Eligible Expenses 2026: What You Can Pay For and Which Receipts to Keep
- Dental Insurance Waiting Period: Which Services May Be Delayed and What to Check
What a health FSA can reimburse
A health FSA generally follows the section 213(d) medical-care definition. Common claims include deductibles, copayments, dental services, orthodontia when properly documented, eye exams, prescription glasses and contacts, hearing aids, prescription drugs, and eligible medical equipment.
Over-the-counter medicines can qualify without a prescription under current law. Menstrual care products also qualify. A purchase can still require an itemized receipt showing the product, date, and price.
Medical, dental, and vision examples
Medical examples include office visits, lab work, physical therapy, insulin, certain diagnostic devices, and transportation primarily for medical care. Dental examples include cleanings, fillings, extractions, and treatment of dental disease. Vision examples include exams, prescription lenses, contact-lens solution, and laser eye surgery.
Insurance premiums generally cannot be reimbursed through a health FSA. Expenses paid by insurance or another tax-advantaged account cannot be claimed a second time.
Products that need a closer look
Sunscreen generally needs the required sun-protection factor and broad-spectrum labeling to fit common eligibility rules; ordinary moisturizer with incidental SPF may not. Vitamins, fitness trackers, massage devices, and special foods usually need more than a wellness purpose and may require a letter establishing a medical need.
Retailer markings are useful shopping aids, not the final tax authority. Compare the item and its purpose with the current IRS list and your administrator's eligible-expense tool before spending a large balance.
Deadlines belong to the plan
Federal rules permit an employer plan to offer a limited carryover or a grace period, but a plan is not required to offer both. A run-out period for submitting claims is different from a grace period for incurring new expenses.
Read the summary plan description for the last date to incur expenses, the last date to submit proof, the carryover amount if any, and what happens when employment ends. Save screenshots or notices showing the applicable plan year.
How to build a clean claim
Ask for an itemized receipt showing merchant or provider, patient, service or product, date, and amount. Pair it with an explanation of benefits when insurance was involved. A debit-card approval can later be reversed if the plan requests substantiation and you do not respond.
Submit early enough to correct a rejected claim. Keep the approval notice and do not also deduct or reimburse the same expense through an HSA.
Frequently asked questions
Are over-the-counter medicines FSA eligible?
Yes under current federal rules, although the administrator may still require an itemized receipt.
Can I buy eligible items for my spouse?
Generally yes for a spouse and qualifying dependents, subject to the plan and tax rules.
Does unused money always disappear December 31?
No. The plan year, grace period, carryover, and claim run-out date are plan-specific.
Can I use both an FSA and HSA for the same bill?
No. The same expense cannot receive two tax-free reimbursements, and a general-purpose health FSA can also affect HSA contribution eligibility.
Summary
A health FSA generally reimburses qualified medical expenses for you, your spouse, and dependents. Medical, dental, vision, over-the-counter medicines, and menstrual care products may qualify, but plan documents control the claim process and deadline. Do not assume an HSA rule, store label, or debit-card approval proves your FSA claim.