When a product or service is labeled “FSA or HSA eligible,” it means you can pay for it using pre-tax money from a Flexible Spending Account (FSA) or Health Savings Account (HSA). Both accounts let you set aside part of your income before taxes are taken out, then use that money for qualifying medical expenses. The result is real savings: every dollar you spend through these accounts avoids federal income tax and payroll taxes, effectively giving you a discount of 20% to 35% or more depending on your tax bracket.
How These Accounts Work
An HSA is a tax-exempt savings account you open yourself, paired with a high-deductible health plan. You, your employer, or even a family member can contribute to it. The money grows tax-free, and withdrawals for qualified medical expenses are also tax-free. Critically, an HSA is portable. It belongs to you regardless of whether you change jobs, retire, or leave the workforce entirely. Unused funds roll over indefinitely, year after year.
An FSA works differently. It’s an employer-sponsored arrangement funded through voluntary salary reductions, meaning money comes out of your paycheck before taxes. Your employer may also chip in. Unlike an HSA, an FSA is tied to your job. If you leave that employer, you generally lose access to any remaining balance. FSAs also come with a “use it or lose it” rule: unspent money at the end of the plan year is forfeited, though many plans allow you to carry over up to $680 into the next year if you re-enroll.
Who Can Have Each Account
To open an HSA, you need to be enrolled in a high-deductible health plan (HDHP). For 2025, that means your plan’s annual deductible is at least $1,650 for individual coverage or $3,300 for family coverage, with out-of-pocket maximums no higher than $8,300 (individual) or $16,600 (family). If your health plan doesn’t meet those thresholds, you can’t contribute to an HSA.
FSAs have no insurance requirement. If your employer offers one, you can sign up during open enrollment regardless of what health plan you’re on. This makes FSAs accessible to a wider group of workers, though you do need an employer that sponsors the benefit.
What “Eligible” Actually Covers
The IRS defines qualified medical expenses broadly under Section 213(d) of the tax code. The list is long and covers far more than doctor visits and prescriptions. Eligible expenses include dental treatment, eyeglasses, contact lenses, vision correction surgery, hearing aids, chiropractic care, acupuncture, mental health services, physical therapy, fertility treatments, and breast pumps, among many others. Even less obvious costs like crutches, bandages, pregnancy test kits, and guide dogs qualify.
Since the CARES Act passed in 2020, over-the-counter products no longer require a prescription to be eligible. This is a permanent change, and it’s the reason you now see “HSA/FSA eligible” labels on everyday drugstore items. Qualifying OTC products include:
- Pain relievers like ibuprofen and acetaminophen
- Cold, cough, and flu medicine
- Allergy and sinus medication
- Digestive aids and acid controllers
- Sleep aids
- Acne medications and skin treatments for conditions like eczema and psoriasis
- Menstrual care products including tampons, pads, and liners
- Baby rash ointments and electrolyte solutions
Before 2020, most of these required a doctor’s prescription to be reimbursable. Now you can simply buy them with your HSA or FSA card at checkout.
What Isn’t Eligible
The “eligible” label matters because plenty of health-related purchases don’t qualify. General wellness products, including daily vitamins and dietary supplements taken for overall health, are not eligible for reimbursement. Cosmetic procedures and products are also excluded. The dividing line is whether something treats or prevents a specific medical condition versus simply making you feel or look better in a general sense. A medicated acne cream qualifies; a regular facial cleanser does not. A weight-loss program prescribed to treat a specific condition like obesity or heart disease can qualify, but a gym membership for general fitness typically does not.
How You Actually Use the Funds
Most HSAs and FSAs come with a debit card linked to your account. When you buy an eligible item at a pharmacy, grocery store, or online retailer, you can swipe that card and the purchase draws directly from your pre-tax balance. Many major retailers have systems that automatically verify whether an item qualifies at the point of sale. If you pay out of pocket instead, you can submit a receipt to your plan administrator for reimbursement.
With an FSA, you have access to your full annual election amount on day one of the plan year, even if you haven’t contributed that much yet. So if you elected $2,000 for the year and it’s January, you can spend the full $2,000 immediately. An HSA, by contrast, only lets you spend what you’ve actually deposited so far.
Key Differences at a Glance
- Ownership: You own your HSA forever. Your FSA is tied to your employer.
- Rollover: HSA funds roll over indefinitely with no cap. FSA funds expire at year’s end, with a possible $680 carryover.
- Insurance requirement: HSAs require a high-deductible health plan. FSAs do not.
- Investment: HSA balances can be invested and grow tax-free. FSA funds sit in cash.
- Availability of funds: FSAs front-load your full annual amount on day one. HSAs only hold what’s been deposited.
Why the Label Saves You Money
When you see “FSA/HSA eligible” on a product listing, the retailer is telling you that the item meets the IRS definition of a qualified medical expense. This saves you the guesswork of figuring out whether your account will cover it. The tax savings are meaningful over time. If you’re in the 22% federal tax bracket and also paying 7.65% in payroll taxes, every $100 you spend through an HSA or FSA effectively costs you about $70 out of pocket. Over a year of contact lenses, allergy medication, copays, and dental work, that adds up to hundreds of dollars in tax savings on expenses you’d be paying for anyway.