How to Use Your FSA Card — A Complete Beginner's Guide for 2026

Getting an FSA card in your benefits package and not knowing exactly how to use it is one of the most common things I hear from moms. You know you have one. You know it is supposed to save you money. But the specifics — where it works, what it covers, what happens if you use it wrong — are genuinely confusing.

I have been there. Here is the complete guide to actually using your FSA card — including the things nobody tells you.

What Is an FSA Card?

Your FSA card is a debit card linked to your Flexible Spending Account. It looks and works like a regular Visa or Mastercard debit card but it can only be used for FSA eligible expenses. The money comes directly from your pre-tax FSA balance.

Your card is typically issued by your FSA administrator — common administrators include HealthEquity, Optum, WEX, Aetna and Cigna. The card will usually have FSA or Health Equity or your administrator's name printed on it.

Where Can You Use Your FSA Card?

Your FSA card does NOT work everywhere that accepts Visa or Mastercard. It only works at merchants that have been set up with the correct merchant category codes for health and medical purchases. Here is where it works and how.

Amazon

Amazon accepts FSA cards directly at checkout. Add your FSA card as a payment method in your Amazon account. When shopping filter your search by FSA or HSA eligible using the left sidebar — look for the FSA Eligible badge on product pages. Your card will only be charged for eligible items. If your cart has both eligible and non-eligible items Amazon will prompt you for a second payment method for the non-eligible portion.

Target

Target accepts FSA cards directly at checkout both in store and online at Target.com. Products are clearly labeled FSA Eligible in store and you can filter by FSA or HSA eligible online. Target's system automatically separates eligible and non-eligible items at checkout and charges each to the appropriate payment method.

Walmart

Walmart accepts FSA cards at checkout in store and online at Walmart.com. The system recognizes eligible items automatically. Great for stocking up on FSA staples like pain relievers, allergy medications and first aid supplies at lower prices.

Pharmacies — CVS Walgreens and Costco

Most major pharmacies accept FSA cards directly at checkout. CVS and Walgreens both have dedicated FSA sections in store and online. Costco Pharmacy accepts FSA cards for prescriptions and eligible health items. Your FSA card works like a regular card — just swipe or insert.

FSA Store and HSA Store

FSAstore.com and HSAstore.com are dedicated websites where every single product is FSA eligible. No filtering, no guessing. Your FSA card works directly at checkout. Great for stress free shopping especially at year end when you need to spend down your balance quickly.

Ulta and Sephora

Ulta and Sephora carry FSA eligible skincare and sunscreen products but do not currently accept FSA debit cards directly at checkout. Pay with a regular credit or debit card and then submit your receipt for reimbursement through your FSA administrator. Keep your receipt and note the specific FSA eligible products purchased.

Truemed

Truemed is a newer platform used by wellness brands including Therabody, HigherDose and others to accept FSA and HSA payments directly at checkout. When you check out on a participating brand's website select Truemed as your payment method, complete a short 2 to 3 question health assessment and pay with your FSA card. The assessment generates a letter of medical necessity which is what allows the purchase to qualify.

How to Use Your FSA Card Online

Using your FSA card for online purchases works the same way as a regular debit card — enter your card number, expiration date and CVV at checkout. However some FSA administrators require you to activate your card for online use separately from in-store use. If your card is declined online call the number on the back of your card to confirm it is set up for online transactions.

You can also add your FSA card to your Apple Pay or Google Pay wallet and use it for contactless payments at participating retailers.

What Happens if You Use Your FSA Card on Something Ineligible?

This is important. If you accidentally or intentionally use your FSA card on a non-eligible expense your FSA administrator can ask you to repay the amount. If you do not repay it your card may be frozen and you could face tax consequences.

At most major retailers like Amazon and Target the system automatically prevents FSA cards from being charged for non-eligible items. But at general retailers your card may go through for non-eligible items — especially at the pharmacy counter where everything is categorized as medical. Always verify eligibility before purchasing.

How to Submit for FSA Reimbursement

If you paid out of pocket for an FSA eligible expense you can submit for reimbursement. Here is the process step by step.

Save your receipt immediately after purchase. Log into your FSA administrator portal through your employer's benefits website or the administrator's app. Submit a reimbursement claim with your receipt, the amount, the date of purchase and the type of expense. Most plans process reimbursements within 3 to 5 business days via direct deposit.

Keep all FSA receipts for at least three years. The IRS can audit FSA accounts and your administrator may request documentation to verify purchases were eligible.

What to Do if Your FSA Card Is Declined

If your FSA card is declined there are several possible reasons. Your balance may be insufficient for the full purchase amount — try paying for just the FSA eligible items separately. The merchant may not be set up to accept FSA cards. The specific item may not be recognized as FSA eligible in that retailer's system. Your card may not be activated for online use.

If your card is declined pay with a regular card and submit for reimbursement instead. Call the number on the back of your FSA card if you cannot determine the reason for the decline — your administrator can tell you your balance and any card restrictions.

The Most Important Thing to Know About Your FSA Card

Most FSA plans operate on the use it or lose it rule. Your balance must be spent by December 31st of the plan year or you forfeit the remaining funds. Some plans offer a grace period through March 15th or a carryover of up to $680 for 2026 — but not both. Check with your HR department to find out which option your plan has.

Set a calendar reminder for October 1st to check your FSA balance. Give yourself enough time to spend it intentionally rather than scrambling in December.

The Bottom Line

Your FSA card is one of the most powerful tools in your financial toolkit as a mom. It works at Amazon, Target, Walmart, pharmacies, FSA Store and many more. It covers way more than most people think. And every dollar you spend through it is a dollar you did not pay taxes on.

Use it. All of it. 🩷 — Amanda

Sources

IRS Publication 502: Medical and Dental Expenses — irs.gov/publications/p502

IRS Publication 969: Health Savings Accounts and Other Tax-Favored Health Plans — irs.gov/publications/p969

IRS Revenue Procedure 2024-40 — 2026 FSA carryover limit $680 — irs.gov

Healthcare.gov — Using a Flexible Spending Account FSA — healthcare.gov

FSA Store — FSA Eligible Eyewear Guide — fsastore.com/articles/learn-fsa-eligible-eyewear

This post is for informational purposes only. FSA eligibility rules vary by plan. Always confirm with your plan administrator.