FSA reimbursement works in one of two ways: you swipe a debit card tied to your account and the money comes straight out of your pre-tax balance at checkout, or you pay out of pocket, send your plan administrator an itemized receipt, and get repaid from the account. The claim route takes a form, documentation, and usually a few business days. The card route often takes nothing more than the swipe itself.
Paying With the FSA Debit Card
Most FSA administrators issue a debit card linked directly to your account balance. When you use it at a pharmacy, doctor’s office, dental clinic, or vision center, the payment pulls from your FSA funds instantly. There is no out-of-pocket spending and no reimbursement form afterward.
At many pharmacies and retailers with inventory verification systems, the card is automatically approved only for FSA-eligible items at checkout. The register itself filters out ineligible products, so you do not need to submit receipts later. Roughly 85 percent of FSA debit card purchases are verified this way at the point of sale.
If you use the card somewhere without an automated verification system, your administrator may ask you to submit an itemized receipt after the fact to confirm the expense was eligible. Failing to provide documentation when requested can result in the card being temporarily deactivated until the transaction is substantiated.1FSAFEDS. Eligible Health Care FSA Expenses
How to File a Reimbursement Claim
When you pay for a medical expense out of pocket instead of using the card, you file a claim to get the money back. The process has three parts: gather documentation, complete the request form, and submit everything to your administrator.
Gather Your Documentation
The key document is an itemized receipt from the provider or retailer. It should show the date of service, a description of what was provided, and the amount you paid. Credit card statements and canceled checks do not count. The IRS requires itemized documentation that identifies the specific service or product.1FSAFEDS. Eligible Health Care FSA Expenses If your health insurance covered part of the cost, include the Explanation of Benefits from your insurer, which shows the portion you are still responsible for after insurance.
Complete and Submit the Claim
Your administrator’s online portal or mobile app will have a reimbursement request form. Fill in the provider’s name, the patient’s name, the date the service was performed, and the amount you are requesting. Make sure the date on the form matches the date on the receipt. A mismatch is one of the most common reasons for delays or denials.
Most administrators let you upload photos or scans of your receipts directly through their website or smartphone app. Digital submissions typically generate an immediate confirmation. If you prefer paper, print the form, attach copies of your receipts, and mail everything to the address your administrator provides. Keep copies of everything you send.
How Long the Money Takes to Arrive
Processing times vary by administrator, but many finalize their review within one to two business days after receiving and verifying the documentation.2FSAFEDS. How Long Will It Take to Receive Reimbursement Once approved, direct deposit payments typically arrive within a few additional business days. Pharmacy claims and claims routed through your health insurance plan before reaching the FSA may take longer, up to 10 to 12 business days in some cases. Physical checks sent by mail add more time on top of that.
One thing worth knowing before you file: your full annual election is available from day one of the plan year. If you elected $3,400 and have contributed only $200 through payroll deductions by February, you can still be reimbursed up to $3,400 for a qualifying expense incurred that month.3Internal Revenue Service. Health FSA Uniform Coverage Rules Your employer cannot base reimbursements on how much you have contributed so far.
What Expenses Qualify
Eligible expenses are defined by the federal tax code as amounts paid for the diagnosis, treatment, mitigation, or prevention of disease, or to affect any structure or function of the body.4Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses In practical terms, that covers:
- Doctor and specialist visits: co-pays, lab work, and fees for physicians, surgeons, dentists, chiropractors, and psychologists
- Prescription drugs, plus insulin
- Dental care: cleanings, fillings, crowns, extractions, braces, and dentures
- Vision care: eye exams, prescription eyeglasses, contact lenses, and prescription sunglasses
- Over-the-counter medications: pain relievers, cold medicine, allergy drugs, and similar products, with no prescription needed
- Menstrual care products: tampons, pads, liners, cups, and similar items
Over-the-counter medications and menstrual care products became FSA-eligible under the CARES Act, which removed the prescription requirement for OTC drugs reimbursed through health FSAs.5Internal Revenue Service. IRS Outlines Changes to Health Care Spending Available Under CARES Act
Basic items like bandages and thermometers are always eligible. Dual-purpose products, meaning those that serve both a medical and a general wellness or cosmetic purpose, require a Letter of Medical Necessity from your health care provider. The letter must name the diagnosed condition, recommend the specific product or treatment, and state the expected duration of use.6FSAFEDS. What Documentation Do I Need to Submit for Eligible Over-the-Counter Drugs and Medicines Without it, the administrator will deny the claim.
What Will Not Be Reimbursed
The IRS specifically excludes several categories of health-related spending:
- Cosmetic procedures such as face lifts, hair transplants, hair removal, and liposuction, unless the procedure corrects a deformity from a congenital abnormality, accidental injury, or disfiguring disease
- General fitness costs like health club dues, gym memberships, and exercise classes recommended only for overall well-being
- Health insurance premiums; you generally cannot use FSA funds to pay premiums for health, life, or disability insurance
- Controlled substances illegal under federal law; marijuana purchased in states where it is legal still does not qualify
- Personal care and household items: diapers (unless medically necessary), maternity clothes, babysitting, and household help
These exclusions apply even when a doctor recommends the item. A swimming class prescribed for general health improvement, for example, is still ineligible.7Internal Revenue Service. Publication 502, Medical and Dental Expenses
If Your Claim Is Denied
The most common reasons for denial are a missing or incomplete receipt, a date mismatch between the form and the receipt, or an expense the administrator considers ineligible. Before treating a denial as final, check whether resubmitting with corrected documentation would fix it.
If you believe the expense is legitimately eligible, most plan administrators offer a formal appeal process. Typical steps include contacting the administrator for a detailed explanation of the denial, then submitting a written appeal with supporting documentation, such as a Letter of Medical Necessity, a corrected receipt, or a statement from your provider clarifying the nature of the treatment. Your plan’s summary plan description, available from your employer’s human resources department, spells out the appeal deadlines and procedures for your account.
Deadlines for Submitting Claims
Health FSAs run on a use-it-or-lose-it rule: any funds left unspent at the end of the plan year are forfeited unless your employer has adopted one of two optional extensions.8Internal Revenue Service. Eligible Employees Can Use Tax-Free Dollars for Medical Expenses For claim filing itself, the deadline you care about is the run-out period.
The run-out period is separate from those extensions. It does not give you extra time to incur new expenses. It gives you extra time to submit paperwork for expenses you already incurred during the plan year. A 90-day run-out is common, meaning claims for a plan year ending December 31 would need to be filed by March 31. If you had an eligible expense in November but forgot to submit the receipt, the run-out period is your safety net. After it closes, unclaimed funds are gone.
Your employer may separately offer a grace period of up to two and a half months to incur new expenses using leftover funds, or a carryover of up to $680 for 2026 into the following plan year.9Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans10Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 A plan cannot offer both.11Internal Revenue Service. Notice 2013-71 – Modification of Use-or-Lose Rule for Health Flexible Spending Arrangements
Reimbursement After You Leave a Job
When your employment ends, your FSA coverage generally stops on your termination date. You can still submit reimbursement claims for eligible expenses you incurred before that date, but new expenses after termination are not covered. Any remaining balance is forfeited if you take no further action.
There is one exception. Because a health FSA is typically an ERISA-covered health plan, your former employer must offer you COBRA continuation coverage. If you elect COBRA, you can keep using your FSA for new expenses by making after-tax contributions to maintain the account. Whether that is worth it depends on the balance in your account versus the cost of the COBRA premiums. In many cases COBRA for a health FSA is only worthwhile if you have contributed less than your election amount and have a meaningful balance remaining.
The uniform coverage rule works in your favor here. If you elected $3,400 for the year but leave in March after contributing only $850 through payroll, you can still file claims for up to $3,400 in eligible expenses incurred before your last day. Your employer absorbs the difference.3Internal Revenue Service. Health FSA Uniform Coverage Rules