Your Complete Guide to Using FSA and HSA Funds for Medical Supplies: 2026 Year-End Edition

catheter FSA
Your Complete Guide to Using FSA and HSA Funds for Medical Supplies: 2026 Year-End Edition

Updated October 2026 with the new IRS limits and year-end deadlines.

If you have a Flexible Spending Account, you're sitting on money with an expiration date -- and the date is closer than it feels. For most plans, FSA dollars left unspent after December 31, 2026 are simply gone. Billions in FSA funds are forfeited by American workers every single year, almost always by people who meant to spend thoughtfully and ran out of calendar.

Here's the good news: medical supplies are among the cleanest, most clearly eligible FSA purchases you can make -- they exist only to manage a medical condition, so there's no gaming the rules. If you or someone you care for uses ostomy, incontinence, diabetic, urological, or wound care supplies, your expiring FSA balance can buy months of products you were going to purchase anyway, with pre-tax dollars. This guide covers the 2026 rules, the deadlines, what qualifies, and the smartest way to spend what's left.

The 2026 Numbers and Deadlines

  • 2026 FSA contribution limit: $3,400 (up from $3,300 in 2025). Picking your 2027 amount at open enrollment? The IRS usually announces next year's limit in the fall, so check your enrollment materials for the final 2027 number.
  • Spending deadline: December 31, 2026 for most plans. After that, unspent money is forfeited -- with at most one of the two exceptions below.
  • Carryover: some employer plans let you roll up to $680 into 2027. Anything above that amount still expires.
  • Grace period: other plans instead give you until mid-March 2027 to spend 2026 dollars. Plans can offer carryover or a grace period, never both -- and some offer neither.

Two minutes with your benefits portal or plan administrator tells you which rules apply to you and exactly how much is sitting in the account. Do that first; everything else in this guide flows from that number.

FSA vs. HSA: One Big Difference

If you have a Health Savings Account rather than an FSA, breathe easy: HSA funds never expire. They roll over automatically year to year and are yours even if you change jobs (2026 contribution limits: $4,400 for self-only coverage, $8,750 for family). The year-end urgency in this guide is an FSA problem.

Both account types spend the same way here: most FSA and HSA debit cards work at our checkout like any other card, and the medical supplies below are eligible for both. Keep your order confirmations -- administrators occasionally request itemized receipts, and every order from us comes with one by email, so substantiation is a 30-second task.

What Medical Supplies Are FSA/HSA Eligible?

The IRS allows FSA and HSA funds for supplies that treat or manage a medical condition -- which covers the core of what we carry. By category:

Ostomy supplies -- fully eligible

Every component of an ostomy routine qualifies: pouching systems, skin barriers, pastes, barrier rings, powders, adhesive removers, deodorizers, and support belts. For ostomates, year-end FSA spending is the classic smart move -- barriers and accessories are consumables you are guaranteed to use.

New to ostomy life? Our new ostomate starter kit guide covers what to buy first -- all of it FSA-eligible.

Diabetic testing and injection supplies -- fully eligible

Glucose meters, test strips, lancets, lancing devices, insulin syringes, pen needles, ketone strips, and control solution all qualify, along with organizers and coolers designed for insulin transport.

Choosing before you stock up? Our ranked guides to the best glucose meters of 2026 and best pen needles of 2026 compare every option we carry, with per-strip and per-needle costs.

Incontinence products -- fully eligible

Protective underwear, briefs, pads, guards, underpads, and skin care products for incontinence all qualify when used for a medical condition -- and incontinence is a medical condition.

Our ranked incontinence underwear guide matches products to use case before you buy by the case. Undergarments and underpads can't be returned, so confirm the size before stocking up.

Catheter and urology supplies -- fully eligible

Foley catheters and indwelling supplies including drainage bags, leg straps, and securement devices all qualify. Catheter insertion trays count as complete medical kits. Catheter lubricants, leg bags, bedside bags, overnight drainage systems, extension tubing, and catheter valve systems are all covered, as are intermittent catheters and closed-system kits.

Wound care -- fully eligible

Dressings of every type -- hydrocolloids, alginates, collagen, foams, films, gauze, tapes, wound gels, and skin barrier films -- qualify.

The Smart Year-End Strategy: Stock Up on What You Already Use

The best use of expiring FSA dollars isn't a gadget you'll never touch -- it's several months of the supplies you already reorder. The math is simple and real: FSA money is pre-tax, so supplies bought with it cost you 20 to 30 percent less than the same order paid from your checking account in January, depending on your tax bracket.

A worked example: an ostomate who goes through a box of barriers, a tube of paste, and a bottle of M9 each month can clear roughly $200 of expiring FSA balance with a three-month stock-up -- products with long shelf lives that will absolutely be used. A daily glucose tester can do the same with strips, lancets, and pen needles. That's not spending to spend; it's moving a guaranteed future purchase into the window where it's tax-free. And stock-up orders of $99 or more ship free anywhere in the US.

Three practical rules for the stock-up:

  • Buy consumables, not experiments. Year-end is for proven reorders in sizes you know fit, not trying a new system (one exception: if your stoma or needs have been stable and a ranked guide convinced you to switch, year-end money makes the switch cheaper).
  • Mind the sizes. New ostomates whose stomas are still changing, and anyone mid-recovery, should stock conservatively -- our stoma size fluctuation guide explains why bulk-buying one size too early backfires.
  • Don't wait for the last week. Order by mid-December so there's time to sort out a declined card or a backordered item before the deadline.

Receipts, Substantiation, and What to Do If a Claim Is Denied

FSA plans are required to verify that card purchases were for eligible expenses -- a process called substantiation. Depending on your plan, some card purchases are verified automatically and others trigger a request for documentation, sometimes months after the purchase. Handle it like this:

  • Save every itemized receipt. An eligible receipt shows the date, the merchant, each item purchased, and the amount. Every order from us generates exactly that by email -- make a folder and drop them in as they arrive.
  • Respond to substantiation requests promptly. If you ignore one, plans will eventually suspend the card and can ask you to repay the amount, or add it to your taxable income -- an entirely avoidable outcome when the receipt is sitting in your inbox.
  • If a claim is denied, don't assume the product was ineligible. The most common causes are a missing itemized receipt (a credit card statement alone never suffices), a purchase date falling outside the plan year, or a generic merchant description. Resubmit with the itemized receipt and a note identifying the item's medical purpose. Every plan has an appeals process, and supply purchases in the categories above usually clear once the itemized receipt is attached.
  • Know your run-out period. Separate from the spending deadline, most plans give you until well into the new year (commonly 90 days) to submit claims for expenses you incurred before December 31. Spending has the hard deadline; paperwork usually gets grace.

Spending for Spouses, Dependents, and the People You Care For

Your health FSA isn't just for you. Eligible expenses for your spouse and your tax dependents qualify, regardless of whose insurance they're on -- and this is where caregivers should pay attention:

  • Buying incontinence supplies, wound dressings, or catheter supplies for a parent you claim as a tax dependent? Eligible.
  • Supplies for your children, including adult children through age 26? Eligible.
  • A spouse managing diabetes while you carry the FSA? Their strips, lancets, and pen needles are eligible on your account.

Two boundaries to know: the person generally must be your spouse or your tax dependent. For a health FSA, that can include a parent you provide more than half the support for, even if their income keeps you from claiming them on your return -- check with your plan administrator for edge cases. And don't confuse a health FSA with a dependent care FSA: that's a separate account for childcare and elder daycare costs, and it cannot be used for medical supplies. The year-end deadline in this guide applies to the health FSA.

Frequently Asked Questions

Do I need a prescription or letter of medical necessity?

Usually not. Ostomy, catheter, diabetic testing, and wound care supplies are standard eligible medical expenses, and most plans treat incontinence products the same way. A few administrators ask for a short note from your doctor the first time you buy incontinence supplies; if yours does, one letter typically covers the plan year. Letters of medical necessity mainly come into play for dual-use items (like certain massagers or air purifiers) -- not for supplies that exist only to manage a medical condition.

Can I use my FSA for a family member's supplies?

Yes -- FSA funds cover eligible expenses for you, your spouse, and your tax dependents, even if they're on different insurance. Caregivers buying incontinence or wound care supplies for a dependent parent: that's an eligible use.

What if my FSA card is declined?

Pay with a regular card, keep the itemized receipt, and submit it to your plan for reimbursement -- every FSA plan has a manual claims path. Card declines at legitimate medical suppliers are usually a merchant-category hiccup, not an eligibility problem.

Does the December 31 deadline mean ordered or delivered?

For supplies, plans generally go by the purchase date on your receipt -- the day you place the order. But don't cut it close: a declined card or a backordered item is much easier to sort out with a couple of weeks on the clock. Mid-December is the smart cutoff.

I have an HSA, not an FSA. Should I still stock up now?

There's no deadline pressure -- your money rolls over. But the pre-tax math works identically, so an HSA stock-up any time of year beats paying cash for the same supplies. Year-end is simply when FSA holders have to act.

Shop FSA-Eligible Supplies by Category

Disclaimer: This information is intended for educational purposes only and is not tax or benefits advice. FSA and HSA rules vary by employer plan -- confirm your plan's deadlines, carryover or grace period provisions, and eligibility requirements with your plan administrator. Figures reflect IRS limits announced for the 2026 tax year and are subject to change.