How to Get FSA Money Back: Claims, Deadlines, and Denials

To get FSA money back, you pay for an eligible medical expense out of pocket, then submit itemized documentation to your plan administrator for tax-free reimbursement. The money comes back to you by direct deposit or check, usually within five to ten business days of a clean submission. The whole system is built around deadlines, so the question of how to get your FSA money back is really two questions: how to file a valid claim, and how to file it before your plan’s cutoff.¹

One thing to know up front: your employer cannot write you a check for unused FSA money. The tax break on contributions depends on the account being used for medical expenses, so a cash refund of leftover funds would disqualify the whole plan.¹ Anything you don’t claim through the reimbursement process by your plan’s deadline is forfeited.

The Deadlines That Decide Whether You Get Paid

Your plan year end is the first deadline, but it is not usually the last. Three other dates can give you more time, and which ones apply depends entirely on your plan documents.

The run-out period is extra time after the plan year ends to submit paperwork for expenses you already incurred during the plan year. It commonly runs around 90 days. You cannot use it to spend on anything new. It just keeps the claim window open for purchases already made.

A grace period, if your plan offers one, gives you up to two and a half extra months after the plan year to incur new qualifying expenses using last year’s balance. For a plan year ending December 31, that stretches your spending window to March 15. Anything still unspent after the grace period ends is forfeited.²

A carryover, if your plan offers one instead, lets you roll a limited amount into the next plan year. For 2026, the maximum carryover is $680, though your employer can set the cap lower. Anything above the carryover limit is forfeited.³

Federal rules let an employer offer the grace period or the carryover, but not both. Some plans offer neither, in which case the hard spending deadline is the last day of the plan year. Check your Summary Plan Description for the exact dates and options that apply to you.

What Qualifies for Reimbursement

FSA-eligible expenses are costs for the diagnosis, treatment, prevention, or mitigation of disease, or expenses that affect any structure or function of the body.⁴ The list is wider than most people assume. Beyond doctor visits and prescriptions, you can get reimbursed for:

Dental care, including cleanings, fillings, braces, dentures, and extractions
Vision care, including eyeglasses, contact lenses and supplies, and corrective eye surgery
Medical equipment like crutches, wheelchairs, bandages, and diagnostic devices
Mental health services, including therapy and psychiatric care
Prescriptions and insulin

Since the CARES Act took effect in 2020, over-the-counter medications and menstrual care products (tampons, pads, cups, and similar items) are also eligible without a prescription.⁵ This change is permanent. Sunscreen, pain relievers, allergy medication, and first-aid supplies all qualify.

Some items sit in a gray area. Products or services that are not automatically medical but could be medically necessary for a specific condition, such as a massage prescribed for a diagnosed injury or an air purifier for severe allergies, typically require a Letter of Medical Necessity from your doctor before the administrator will approve the claim. The letter should describe the condition, the specific product or service prescribed, and the expected duration of treatment. Get it before you incur the expense. Submitting it after a denial drags out reimbursement considerably.

Documentation You Need

Every claim requires proof that the expense was a qualifying medical cost. A credit card receipt or bank statement will not cut it.⁶ What administrators actually accept:

An itemized receipt or invoice showing the date of service, the provider’s name, the patient’s name, a description of the service or product, and the amount charged
An Explanation of Benefits from your insurer if the expense went through insurance first, showing what was covered and what you owe out of pocket
A pharmacy receipt showing the drug name and prescription number for medications

Your plan’s claim form will also ask you to certify that the expense has not been reimbursed by any other health plan. Double-dipping, meaning collecting from both insurance and your FSA for the same covered amount, disqualifies the expense. You can still use FSA funds for the portion insurance did not cover, including copays, deductibles, and coinsurance.

Keep digital copies of everything you submit. Administrators can ask for additional verification later, and if you cannot reproduce the documentation, the reimbursement may be reversed and treated as taxable income.

How to Submit a Claim

Most plan administrators offer online portals and mobile apps where you upload scanned receipts or photos of your documentation. Digital submission is faster and creates an automatic record. After you upload the documents and complete the claim form, you’ll get a confirmation number. Processing usually takes five to ten business days, with reimbursement delivered by direct deposit or a mailed check.

Submit each expense separately, or at least break out the line items clearly. Lumping multiple provider visits into a single vague claim is the fastest way to get a denial letter.

Using an FSA Debit Card

Many employers issue FSA debit cards that let you pay for eligible expenses at the point of sale. When the card works as intended, it eliminates the reimbursement step entirely. The money comes straight out of your FSA at checkout. But the IRS still requires substantiation for these transactions. Two methods can auto-approve a swipe without any extra paperwork from you:⁷

Copay matching, where the transaction amount at a healthcare provider exactly matches your insurance copay or a small multiple of it
An inventory information approval system (IIAS), used by certain pharmacies and retailers, which identifies FSA-eligible items by product code at the register so only qualifying items get charged to the card

When a debit card swipe does not match either method, your administrator will flag it and request a receipt. Ignore those requests and the administrator can deactivate your card or offset the unsubstantiated amount against future claims. Treat every follow-up request as urgent.

If Your Claim Is Denied

Denials are common and usually fixable. The most frequent reasons are missing documentation, an expense that is not on the plan’s eligible list, or a mismatch between your receipt and your claim form, such as a wrong date, wrong amount, or missing patient name. The denial notice should explain the specific reason.

Start by checking whether you can simply resubmit with better documentation. If the expense is genuinely eligible and you have the right paperwork, a clean resubmission often resolves it. If the administrator upholds the denial, group health plans are required to offer an internal appeals process and, in some cases, an independent external review.⁸ The specifics vary by plan, but you typically file a formal written appeal with supporting documents within a deadline stated in your denial notice, followed by a second-level review if the first appeal fails. Keep a paper trail of every communication.

Getting Your Money Out When You Leave a Job

When you leave a job, your FSA access usually ends on your last day of employment or the last day of the month in which you leave, depending on your plan. You generally have 60 to 90 days after coverage ends to submit claims for expenses you incurred while still employed. Any balance remaining after that window is forfeited. You cannot get it back as cash.

If you know you’re leaving, try to use your full balance before your last day. Schedule the dental cleaning, stock up on eligible supplies, or get new glasses. Once your coverage ends, you can only claim expenses from the period when you were still covered.

COBRA for Your FSA

Health FSAs are considered group health plans and are subject to COBRA continuation coverage when offered by employers with 20 or more employees.⁹ Electing COBRA for your FSA lets you keep spending from the account after you leave, but you’ll pay the full contribution amount plus a 2% administrative fee, with no employer subsidy and no pre-tax benefit. The math only works in your favor if your unspent balance comfortably exceeds what you’d pay in COBRA premiums for the rest of the plan year. If you leave in March with $2,500 still in the account, run the numbers. If you’re close to year end with a small balance, it rarely pays.

Spending Down Before the Deadline

If the plan year is winding down and you still have money sitting in the account, practical ways to use it before the deadline include:

Scheduling preventive care you’ve been putting off: annual physicals, dental cleanings, eye exams, and screenings
Filling prescriptions you’ll need in the coming months, including 90-day supplies where allowed
Buying eligible supplies like sunscreen, first-aid kits, contact lens solution, over-the-counter pain relievers, and menstrual care products
Updating your glasses or contacts, since vision expenses are fully eligible and often large enough to make a real dent
Addressing nagging issues like physical therapy, a dermatology appointment, or an orthodontic consultation

Spend on care you actually need. Buying products you’ll never use just to avoid forfeiture defeats the purpose. But most people underestimate their ongoing medical costs, so a conservative election combined with a late-year spending push usually beats over-contributing and watching money disappear.

1
Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans
2
Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans – Section: Balance in an FSA
3
Internal Revenue Service. Revenue Procedure 2025-32
4
Internal Revenue Service. Publication 502 (2024), Medical and Dental Expenses
5
Internal Revenue Service. IRS Outlines Changes to Health Care Spending Available Under CARES Act
6
FSAFEDS. Eligible Health Care FSA (HC FSA) Expenses
7
Internal Revenue Service. Notice 2006-69 – Amounts Received Under Accident and Health Plans
8
eCFR. 26 CFR 54.9815-2719 – Internal Claims and Appeals and External Review Processes
9
U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Workers