FSA money covers medical expenses your insurance doesn't fully pay for

Your Flexible Spending Account (FSA) holds pre-tax dollars you set aside for out-of-pocket healthcare costs. You can spend that money on prescription medications, copays, deductibles, and dozens of medical supplies and devices — but not on everything. The IRS maintains a specific list of what counts as a may have access to medical expense, and items outside that list will trigger taxes and penalties if you withdraw them.

The key rule: the expense must be for diagnosis, treatment, or prevention of a medical condition, and it cannot be something your health insurance covers. If your plan pays for it, your FSA cannot. If it's purely for comfort or convenience rather than medical necessity, your FSA cannot cover it either.

Key Takeaways

  • FSA funds cover copays, deductibles, prescription medications, and most over-the-counter medical supplies without a doctor's note.
  • Common covered items include bandages, pain relievers, allergy medicine, glucose monitors, and hearing aid batteries — but the IRS rules on each category vary.
  • Cosmetic procedures, vitamins, and toiletries are not covered, even if they improve your health or appearance.
  • You need to keep receipts and documentation to prove expenses were medical in nature if your FSA administrator or the IRS asks.

Prescription medications and over-the-counter drugs

Prescription medications are always covered. Over-the-counter drugs are covered only if you have a prescription from your doctor — even for something as simple as ibuprofen or allergy medicine. A prescription does not have to come from a physician; nurse practitioners, physician assistants, and dentists can write them too.

If you buy an over-the-counter drug without a prescription, you cannot use FSA funds for it, even if it treats a legitimate medical condition. Some employers' FSA plans allow over-the-counter medications without a prescription as of 2024, but this is optional and not universal — check your plan documents or call your FSA administrator to know your specific rules.

Medical supplies and devices you use at home

Blood glucose monitors, test strips, lancets, and other diabetes management supplies are covered. Bandages, gauze, elastic wraps, and first-aid supplies are covered. Heating pads, ice packs, and crutches are covered. Hearing aid batteries, replacement parts, and maintenance kits are covered. Pregnancy tests and ovulation kits are covered.

The common thread: these are items a doctor would reasonably recommend for treating or managing a diagnosed condition. If you have a prescription or a doctor's note stating medical necessity, you have strong documentation. Without it, the item must still be clearly medical in purpose — a thermometer or blood pressure cuff is obviously medical, but a vitamin supplement is not, even if your doctor suggested it.

Copays, deductibles, and coinsurance

Any amount you owe out of pocket at a doctor's office, hospital, urgent care, or pharmacy counts as a may have access to medical expense. This includes copays for office visits, coinsurance (the percentage you pay after insurance), and deductibles you have not yet met. You can use FSA funds to pay these at the time of service or reimburse yourself later with receipts.

If your health plan covers a service, you cannot use FSA funds to cover what the insurance company pays — only your portion. For example, if your plan covers 80% of a procedure and you owe 20%, your FSA covers your 20%.

Dental and vision care

Dental cleanings, fillings, root canals, orthodontia, and tooth extractions are covered. Vision exams, glasses, contact lenses, and contact lens solution are covered. Hearing aids and related services are covered. These are all considered medical expenses under FSA rules.

Cosmetic dental work — like teeth whitening or veneers done purely for appearance — is not covered unless it is medically necessary (for example, veneers to restore a tooth damaged by injury). Ask your dentist or eye doctor whether the procedure qualifies; they often know the FSA rules and can code the service accordingly.

Items the IRS does not cover

Vitamins and supplements are not covered, even if prescribed by a doctor, because the IRS classifies them as nutritional rather than medical. Cosmetic procedures like Botox, laser hair removal, or teeth whitening are not covered. Gym memberships, fitness equipment, and weight-loss programs are not covered. Sunscreen, toothpaste, deodorant, and other toiletries are not covered, even if they prevent health problems.

Over-the-counter pain relievers, allergy medicine, and cold medicine are not covered without a prescription. Maternity clothes, breast pumps (as of 2024, this changed — check your plan), and other pregnancy-related items have specific rules that vary by plan. When in doubt, ask your FSA administrator before you spend the money; they can tell you whether a specific item qualifies under your plan.

How to document and track your purchases

Keep receipts for everything you buy with FSA funds. Your FSA administrator may ask for proof that an expense was medical in nature, especially for items that could be personal care (like a thermometer or heating pad). A receipt from a pharmacy or medical supply store usually serves as proof. For items bought elsewhere, a receipt plus a note from your doctor stating medical necessity strengthens your case.

Many FSA debit cards now come with a feature that flags purchases for documentation. If you are reimbursing yourself rather than using a debit card, submit receipts promptly — most plans require documentation within 30 to 60 days of purchase. Keep copies for your records; the IRS can audit FSA claims years later.

Frequently Asked Questions

Can I use my FSA to buy vitamins or supplements?

No. The IRS does not cover vitamins or dietary supplements, even if your doctor recommends them or writes a prescription. They are classified as nutritional, not medical. The only exception is if a supplement is prescribed to treat a specific diagnosed deficiency and is medically necessary — ask your FSA administrator whether your situation qualifies.

Do I need a doctor's note for every over-the-counter purchase?

Most plans require a prescription for over-the-counter drugs but not for medical supplies like bandages or heating pads. Check your plan documents or call your administrator. If you are unsure, getting a prescription from your doctor costs nothing and protects you from having to repay the money later.

What happens if I buy something that is not covered?

If you use your FSA debit card for a non-may have access to expense, you will owe income tax plus a 20% penalty on that amount. If you are reimbursing yourself, do not submit the receipt. If you already did and the administrator catches it, you will be asked to repay it. Keep receipts so you can prove what you bought if questions arise.

Can I use FSA funds for my spouse or children?

Yes, if they are covered under your health insurance plan. You cannot use FSA funds for anyone not on your plan, even a dependent you claim on your taxes. The expense must be for someone you could claim as a dependent at the time you incur it.

Are prescription glasses and contacts covered?

Yes. Eyeglasses, contact lenses, contact lens solution, and eye exams are all covered. Frames and lenses are covered whether you buy them at an optometrist's office or an independent retailer, as long as you have a valid prescription or exam from a licensed eye care provider.