This FSA substantiation checklist outlines required supporting documents to submit to your plan administrator for eligible expense reimbursement. It is structured to align with standard IRS and plan administrator requirements, so you can organize your supporting paperwork in a dedicated FSA claims folder to reduce rejection risks and speed up processing times. Clause Shelf provides this guidance for educational purposes only; this document does not bind coverage, approve claims, or override your plan administrator’s official rules, so always confirm requirements with your HR desk, plan broker, or licensed benefits professional before submitting a claim.
Itemized receipt form submission rules for over-the-counter FSA purchases
All over-the-counter (OTC) medical, dental, and vision purchases are eligible for FSA reimbursement without a prescription per current IRS rules, but you must submit an itemized receipt for every purchase to qualify for reimbursement. Credit card transaction slips, digital payment confirmations, and register receipts that only list a total purchase amount without item details are not acceptable for substantiation. Every itemized receipt must include the full legal name of the merchant, exact date of purchase, clear description of each item purchased, pre-tax and post-tax cost breakdown for each item, and proof of full payment (e.g., a “paid in full” stamp or notation). If a single receipt includes both eligible and ineligible purchases (e.g., a grocery store receipt with eligible pain relievers and ineligible grocery items), circle all eligible line items and write the total eligible amount at the top of the receipt before submission. Handwritten receipts are only accepted if they include all required fields and are signed by the merchant; typed or digitally generated receipts are preferred to reduce processing delays. All OTC purchase receipts must be dated within your plan’s official eligibility window, including any applicable grace period or carryover window specified in your plan documents.
Reimbursement request cover sheet mandatory fields to complete prior to filing
Every FSA reimbursement request must be paired with a completed cover sheet, which you can download from your plan’s member portal or request from your HR benefits desk. The cover sheet helps administrators match your request to your account quickly, and missing or incorrect fields are the top cause of FSA claim rejections. Use the checklist table below to confirm you have completed all mandatory fields before filing:
| Field Name | Required Information Standard | Common Rejection Trigger | Verification Step to Complete Before Filing |
|---|---|---|---|
| Plan Participant Full Name | Legal first and last name matching your official plan enrollment records | Use of nicknames, maiden names not updated in plan files, or misspelled names | Cross-reference the name you enter with your most recent employee benefit statement to confirm spelling and formatting |
| FSA Plan Year | 4-digit year corresponding to the eligibility window the expense was incurred in, including grace period designations if applicable | Listing the prior plan year for expenses incurred during the current plan’s grace period, or vice versa | Confirm your plan’s grace period and carryover rules via your HR portal before entering the plan year on your request |
| Total Reimbursement Requested | Exact sum of all eligible expenses included with your submission, calculated to the cent | Rounded dollar amounts, or totals that do not match the sum of eligible line items on attached receipts | Add all eligible expenses manually twice to confirm the total matches the amount you enter on the cover sheet |
| Expense Category Selection | Clear check mark or selection for either general medical FSA, limited-purpose FSA, or dependent care FSA, matching the type of expenses submitted | Selecting the wrong category for your expense type (e.g., listing a dependent care receipt under general medical FSA) | Cross-reference each attached receipt’s expense type with the category you select to ensure alignment |
| Signed Attestation | Wet or electronic signature, or checked attestation box, confirming all expenses are eligible, have not been reimbursed by another source, and will not be claimed as a tax deduction | Missing signature, or unchecked attestation box | Read the full attestation language on the cover sheet before signing to confirm you meet all stated requirements |
If you are submitting your request digitally, upload the cover sheet as the first page of your document packet to ensure processors see it first. If you are submitting a paper request, staple the cover sheet to the front of all supporting documents. Illustrative example: A complete request with a correctly filled cover sheet is typically processed within 3 to 5 business days, while a request missing a cover sheet or with incorrect fields can be delayed by 10 or more business days, and may be rejected entirely if not corrected within your plan’s filing window.
Eligibility verification note acceptable formats for medical service expense claims
For medical, dental, vision, or mental health service expenses (including office visits, lab work, physical therapy, and urgent care visits), you must submit an eligibility verification note that confirms the service was medically necessary and that you paid the out-of-pocket amount being claimed. Acceptable formats for this note include an itemized billing statement from your service provider, a signed and dated letter from your provider listing all service details, or an Explanation of Benefits (EOB) from your primary health insurance provider. All verification notes must include the full name of the patient receiving care, exact date of service, type of service provided, total cost of the service, amount paid by insurance (if applicable), and the total out-of-pocket amount you paid. Balance due statements that do not list service details, or credit card receipts that only show a payment amount to a provider, are not acceptable for substantiation. If you are on a payment plan for a large medical expense, you can only claim the portion of the balance you paid during the applicable plan year, not the full total cost of the service. For telehealth services, confirm with your plan administrator if you need to include the provider’s National Provider Identifier (NPI) number on the verification note, as some plans require this for processing.
Dependent care expense schedule required provider and time entry specifications
For dependent care FSA claims, you must submit a completed dependent care expense schedule that meets all IRS requirements to confirm the care was for an eligible dependent and used to allow you (and your spouse, if filing jointly) to work, attend school, or search for employment. All schedules must include the full legal name and date of birth of the dependent receiving care, to confirm they meet the IRS eligibility requirements (either under age 13, or a spouse or adult dependent who is incapable of self-care and lives in your home for at least 8 hours per day). You must also include full details for the care provider: full legal name of the provider or care center, provider tax ID number (or social security number for individual providers like nannies or in-home caregivers), and the provider’s full mailing address and phone number. Time entry specifications require you to list every exact date of care, number of hours of care provided on each date, the agreed-upon hourly or daily rate for care, and the total amount paid for each pay period. If you use a licensed daycare center, they will typically provide a monthly statement that meets all these requirements, but if you use an individual provider, you must create a schedule signed by both you and the provider to confirm the accuracy of the hours and payments. You can only claim the out-of-pocket portion of dependent care costs, not amounts covered by state or employer childcare subsidies. Illustrative example: A dependent care schedule for a 2-year-old attending licensed daycare 4 days per week would list each date of attendance, the agreed-upon daily rate of $35, total monthly payment of $560, and be signed by the daycare center director to confirm no subsidy was applied to the amount claimed.
Prescription coverage confirmation letter upload steps for pharmacy-related FSA claims
For prescription medications, specialty drugs, and any OTC medications that your plan requires a prescription for to be eligible, you must submit a prescription coverage confirmation letter from your pharmacy to substantiate your claim. Follow these steps to upload or submit the letter correctly to avoid rejection: First, request a confirmation letter from your pharmacy’s patient portal or in-person at the pharmacy counter, ensuring the letter includes the full name of the patient, prescription number, date the prescription was filled, name and NPI number of the prescribing provider, name and dosage of the medication, quantity dispensed, total cost of the prescription, amount covered by insurance, and the total out-of-pocket amount you paid. Second, if submitting digitally, save the letter as a PDF or JPG file that is no larger than 5MB, and avoid password-protected files, as most plan administrator systems cannot open encrypted documents. Third, if submitting a paper copy, make a duplicate for your personal FSA records folder before mailing or dropping the document off at your HR desk, to keep for your tax records. Fourth, attach the confirmation letter to your reimbursement request cover sheet, and note the corresponding line item number from the cover sheet on the top of the confirmation letter to help processors match the document to your request. Fifth, if your plan requires prior authorization for the prescription, include a copy of the prior approval letter with the confirmation letter to avoid automatic rejection. Even if you use your FSA debit card to pay for prescriptions at the point of sale, your plan administrator may still request a copy of the confirmation letter to substantiate the purchase, so keep all letters in your FSA folder for at least 3 years after the end of the plan year, per IRS recordkeeping rules.
Immediately pull all unsubstantiated 2024 FSA expenses from your dedicated claims folder and cross-reference each supporting document against this checklist to fix any gaps before your plan’s annual filing deadline.