What FSA Covers: A Plain Guide to Your Eligible Expenses

A Flexible Spending Account (FSA) is a tax-advantaged savings tool that lets you set aside pre-tax dollars to pay for qualified healthcare expenses. Understanding what qualifies—and what doesn't—helps you maximize this benefit without overfunding an account you can't fully use.

How FSA Coverage Works

An FSA doesn't "cover" expenses the way insurance does. Instead, it lets you pay for eligible expenses using pretax money, which reduces your taxable income and effectively lowers your out-of-pocket cost. You contribute a set amount each year during your employer's open enrollment period, and those dollars sit in your account ready to use.

The key advantage: money you contribute isn't subject to federal income tax, Social Security tax, or Medicare tax. For someone in the 24% tax bracket, a $2,500 FSA contribution might actually save around $600 in taxes annually.

What FSA Typically Covers 💊

Medical expenses are the broadest category:

  • Doctor visits and specialist consultations
  • Hospital stays and surgery
  • Prescription medications
  • Insulin and diabetes supplies
  • Mental health and psychiatric care
  • Physical therapy and rehabilitation
  • Dental work (cleanings, fillings, orthodontia, implants)
  • Vision care (eye exams, glasses, contact lenses, surgery)
  • Hearing aids and related care
  • Medical equipment (crutches, wheelchairs, glucose monitors, blood pressure cuffs)
  • Certain over-the-counter items—though rules here changed in 2020

Dependent care is a separate FSA category (sometimes called a Dependent Care FSA), covering eligible childcare and adult daycare expenses while you work.

What FSA Does NOT Cover

Understanding exclusions is equally important:

  • Health insurance premiums (with rare exceptions)
  • Cosmetic procedures unrelated to medical necessity
  • Vitamins and supplements (unless prescribed by a doctor for a specific medical condition)
  • General wellness products (gym memberships, weight loss programs)
  • Teeth whitening and cosmetic dentistry
  • Over-the-counter medications without a prescription (as of 2020)
  • Long-term care insurance
  • Fertility treatments in some states, depending on your plan
  • Pet care, even for service animals

How Your Situation Affects Your Coverage

Several variables determine whether a specific expense qualifies:

Your plan's rules. Employers can set different parameters within IRS guidelines. Some FSAs are more generous than others—for instance, covering certain preventive items your coworker's plan doesn't. Always check your Summary of Benefits and Coverage or plan documents.

Medical necessity. Many borderline expenses qualify if a healthcare provider documents that they're medically necessary. A pair of compression socks might be eligible if prescribed for lymphedema but not if purchased for general comfort.

Dependent care eligibility. Only childcare for children under 13, or adult daycare for dependents you claim on taxes while you're working, qualifies in a Dependent Care FSA.

State regulations. Some states have specific rules about what counts—fertility treatments are a common variable.

The Use-It-or-Lose-It Rule

One critical constraint: most FSAs operate under a "use-it-or-lose-it" rule. Money you don't spend by the end of the plan year (or a short grace period, if your employer offers one) is forfeited. This makes accurate contribution planning essential, especially for seniors whose healthcare spending may be unpredictable.

Some employers now offer a rollover option, allowing you to carry a limited amount forward—but this isn't standard.

What You Should Evaluate for Your Situation

Before maximizing your FSA contribution, consider:

  • What healthcare expenses do you expect this year? (prescriptions, dental work, vision care)
  • Does your plan allow rollovers or a grace period?
  • Can you access your account easily when you need it?
  • Do you have other tax-advantaged savings (HSA, for example) that might be better suited?
  • What documentation will you need to submit for reimbursement?

Your FSA is most valuable when you can confidently predict and use the full amount. A qualified tax professional or your employer's benefits administrator can help you assess whether this tool fits your specific circumstances.