Can You Reimburse Yourself From an FSA: Claims and Deadlines

Yes, you can reimburse yourself from an FSA for any qualified medical expense you paid out of pocket, as long as the care was received during your plan year and you file the claim with proper documentation before your plan’s deadline.¹ For plan years beginning in 2026, you can route up to $3,400 in pre-tax salary into a health care FSA, so paying yourself back is often the whole point of the account.²

What Expenses You Can Pay Yourself Back For

The IRS ties FSA eligibility to the definition of medical care in Section 213(d) of the Internal Revenue Code: the expense must relate to diagnosing, treating, or preventing a disease, or to a procedure that affects a structure or function of the body.³ In practice, that covers most of the health costs a household actually runs into:

Doctor visits, hospital stays, lab work, and X-rays.
Dental care, including fillings, braces, extractions, and cleanings.
Eye exams, prescription eyeglasses, contact lenses, saline solution, and corrective eye surgery.
Prescriptions, insulin, and over-the-counter medicines (no prescription needed since the CARES Act took effect for purchases made on or after January 1, 2020).⁴
Psychiatric care, psychotherapy, and counseling.
Crutches, blood-sugar monitors, hearing aids, and similar equipment.

You can spend the money on care for yourself, your spouse, any dependents you claim on your tax return, and your child under age 27 at the end of the tax year. It also covers someone who would qualify as your dependent except that they filed a joint return or had income above the exemption threshold.⁵ The child-under-27 rule catches many parents off guard and is useful for adult children who have aged off your insurance but still send you medical bills.

Some items sit in a gray zone. Vitamins, ergonomic furniture, and gym memberships can qualify, but only with a letter of medical necessity from a licensed practitioner identifying the condition, the duration of treatment, and a statement that the expense is medically necessary rather than for general health or cosmetic purposes.⁶ Without that letter, expect a denial.

When an Expense Is Considered Incurred

An expense is incurred on the date the care is received, not the date you pay the bill. If you saw a doctor in December but the bill lands in February, it’s still a December expense against the prior year’s balance. Prepaying in December for a January procedure goes the other way: the expense belongs to the new plan year. Timing at the year boundary is one of the most common places people get tripped up.

How Much of Your Balance Is Available

Your entire annual election is available on the first day of the plan year, even if only one payroll contribution has come out so far. The IRS calls this the uniform coverage rule, and it requires the maximum reimbursement amount to be accessible for claims incurred at any point during the coverage period.¹

If you elected $3,400 for 2026 and paid a $2,000 dental bill in January, you can reimburse yourself the full $2,000 right away. Payroll contributions continue for the rest of the year, but the money is front-loaded for your use.

Documentation You’ll Need

Every self-reimbursement claim has to be substantiated. You need either an itemized receipt from the provider or an Explanation of Benefits from your insurance company. A credit card statement or plain cash register slip won’t do because it doesn’t describe the service.⁷

The documentation must show:

The provider’s name.
The patient’s name.
The date of service.
A description of the service or product.
Your final out-of-pocket cost after any insurance adjustments.

An Explanation of Benefits showing the date of service and your share of the cost can substantiate a claim on its own, without a separate provider receipt.⁷ For any claim where insurance paid part of the bill, that’s often the easiest route.

Keep copies of every receipt and claim form for at least three years, in line with the general IRS record-retention period for documents supporting deductions and credits.⁸

How to File the Claim

Most administrators accept claims three ways:

Through a mobile app, where you photograph the receipt, fill in the fields, and submit. Fastest option, and it stores a digital record automatically.
Through an online portal, where you upload a scanned PDF, complete the claim form on screen, and track status in real time.
By mail, using a printed claim form from your administrator’s website or your employer’s HR portal, with copies of the receipts attached.

Electronic claims typically process in a few business days; mailed claims take longer. Once approved, most administrators send reimbursement by direct deposit to a linked bank account, or by check if you haven’t set one up.

Deadlines That Can Cost You the Money

The IRS enforces a use-it-or-lose-it rule: any balance left after the plan’s final deadline is forfeited to the employer.¹ Three separate windows determine when you actually lose access.

Run-out period. Nearly every plan gives you a window after the plan year ends (often 90 days) to submit claims for expenses already incurred during the year. It doesn’t let you spend on new care; it’s just extra filing time. Miss it, and eligible expenses go unreimbursed.¹

Grace period. Some plans offer up to two and a half extra months after the plan year to incur new eligible expenses against the prior year’s balance. For a calendar-year plan, that runs to roughly March 15.¹

Carryover. Other plans let up to $680 of unused funds roll into the next plan year for 2026. Anything above $680 is still forfeited.²

Your employer can offer a grace period or a carryover, but not both in the same plan.⁹ Some plans offer neither. Check your plan documents or ask your benefits department which applies to you before you assume anything.

If You Leave the Job Before Year-End

Your health care FSA generally terminates on your last day of employment. You can still submit claims for expenses incurred before that date, but any care received afterward is not reimbursable, and any balance left after your separation is forfeited.¹⁰

The rule cuts the other way too. Because of the uniform coverage rule, if you spent your full election before all your payroll deductions were collected, you don’t owe the difference back. The employer absorbs it.¹⁰

Employers with 20 or more employees may have to offer COBRA continuation for the FSA.¹¹ Most people skip it, since you’d pay the full contribution plus a 2% administrative fee to keep access to a limited balance.

You Can’t Also Deduct the Same Expense on Your Taxes

If you reimburse yourself from an FSA for a medical expense, you cannot also claim that expense as an itemized medical deduction. The IRS is explicit that expenses reimbursed by an FSA funded with pre-tax contributions cannot be included in medical expenses for deduction purposes.¹² You already got the tax break through the salary reduction; claiming it again would be a second benefit on the same dollar.

Only amounts you paid entirely out of pocket with after-tax money, without reimbursement from any source, can go into the itemized medical deduction. This mostly matters if you itemize and have unusually high medical costs; anyone taking the standard deduction can set the concern aside.

1
Internal Revenue Service. Modification of Use-or-Lose Rule for Health Flexible Spending Arrangements
2
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
3
Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses
4
FSAFEDS. FAQs – OTC Medicines
5
Internal Revenue Service. Publication 969 – Health Savings Accounts and Other Tax-Favored Health Plans
6
FSAFEDS. Letter of Medical Necessity Form
7
Internal Revenue Service. Notice 2006-69
8
Internal Revenue Service. How Long Should I Keep Records
9
Internal Revenue Service. IRS – Eligible Employees Can Use Tax-Free Dollars for Medical Expenses
10
FSAFEDS. What Happens If I Separate or Retire Before the End of the Plan Year
11
U.S. Department of Labor. Continuation of Health Coverage (COBRA)
12
Internal Revenue Service. Publication 502 – Medical and Dental Expenses