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Save 30% by using your HSA/FSA card

Your card is a payment option at checkout, next to credit card and the wallets. That money was set aside before income tax, so you keep the tax you would have paid on it.

A nurse in dark scrubs takes a quiet pause at the end of a shift.

What happens at checkout

Three screens from the real checkout flow.

  1. Pick HSA/FSA in the payment list

    It sits with credit card and the wallets, not off in a separate flow.

    The payment section of Üni checkout. The options are Credit card, Pay with FSA slash HSA, Shop Pay, Apple Pay and PayPal. Pay with FSA slash HSA is selected and a note reads that you will be redirected to complete your purchase.
  2. Answer a few health questions

    A licensed provider reviews your answers, not our products.

    The health questions screen at checkout. It asks whether you have been diagnosed with any of the following conditions and says select all that apply, listing foot, knee and back conditions plus a None option. Every box is unchecked. A Continue button sits at the bottom.
  3. Pay, on one card or two

    Use your HSA or FSA card, or split the order across two cards. Your letter of medical necessity arrives by email after you check out.

    The payment screen after the health questions, headed Payment Method. It offers Pay in full with a credit or debit card, or Split payment where you choose the HSA or FSA amount. Split payment is selected, with card fields for each amount and a Pay now button.

How does paying with HSA or FSA save me 30%?

These accounts exist for one thing: paying with pre-tax money for what treats, eases or prevents a condition a provider has diagnosed. That is the IRS test, and it is about the expense, not the shop.

One hundred dollars of pay, followed two ways. Spending from your bank account: one hundred dollars you earn, then thirty dollars taken out in taxes, leaving seventy dollars to spend. Spending from your HSA or FSA: one hundred dollars you earn, no taxes taken out, leaving one hundred dollars to spend.

Try your own numbers

Combined means income plus payroll taxes. It differs by person, income and state.

Tax you never pay

$54

on a $180 order paid with pre-tax dollars at 30%

Illustrative math, not tax advice and not a discount. Your savings depend on your own tax rates and your plan. Yearly contribution caps are in IRS Publication 969.

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Common questions

Will my HSA or FSA card go through at checkout?

Yes. HSA/FSA appears as a payment option at checkout. You answer a few health questions, then you pay with your HSA or FSA card the same way you would use any other card. A licensed provider reviews your answers, not our products. If your order needs a letter from that provider, the letter comes to you by email after you check out.

The questions do not hold up your order, so you pay and check out as normal.

No new account to open and no balance to top up. Bring the card your employer gave you.

Can I still pay with a normal card?

Yes. Credit card is still a payment option at checkout, alongside the wallets, and nothing about this page changes that.

You can also split an order: put part of it on your HSA or FSA card and the rest on a normal credit or debit card.

What is the letter, and why do I get one?

Under IRS rules, some things you buy count as a medical expense only when they treat a specific health condition, not when they are for general health. A letter of medical necessity is a licensed provider's written opinion that a product may treat a condition you have.

Here is how it works. You answer a few health questions at checkout. A licensed provider reviews your answers, not our products. The questions do not hold up your order, so you pay and check out as normal. Your letter arrives by email after you check out. Keep it, because your plan may ask to see it. Not everyone qualifies, and your plan makes the final decision on any claim.

Some of what we sell may qualify as a medical expense under IRS rules. Some items need a letter of medical necessity, which is a written opinion from a licensed provider that a product may treat a specific condition you have. That review is done by a licensed provider through an independent partner, not by Üni. Not everyone qualifies. No product on this site has been reviewed or approved for you in advance.

A letter is not a guarantee that your plan will pay. Your plan administrator, the company that runs your HSA or FSA, makes that decision, and plans differ.

Where does the saving actually come from?

The money in an HSA or FSA is set aside before income tax comes out of your pay. When you spend it on something that counts as a medical expense, you never pay tax on those dollars. That is where the savings come from. It is not a discount on the price.

How much you keep depends on your own tax rates. The worked example, with the range around it, sits next to the diagram further up this page.

There is a yearly cap on how much you can put into one of these accounts. The IRS publishes the current numbers in Publication 969.

Üni is not a tax advisor, a medical provider, or a benefits administrator, and nothing on this page is tax, legal, or medical advice. For questions about your account or a claim, contact your plan administrator. For tax questions, talk to a tax professional.

How is an FSA different from an HSA?

An HSA is a health savings account. An FSA is a flexible spending account. Most people fund these accounts straight from their paycheck, before taxes come out. Both are meant for health costs that qualify.

Most people get one through an employer. If you are not sure whether you have either, your employer or the company that runs your benefits can tell you.

Is there a right time of year to use it?

You can use it any time of year. The difference worth knowing is what happens to money you do not spend.

HSA money generally stays in your account year after year. FSA money usually has a deadline. Some plans let a limited amount carry into the next year and some do not, so check the rules on your own plan rather than assuming a date.

No HSA or FSA card. What are my options?

You need one of those accounts to pay this way. If your employer offers one, open enrollment is usually when you can sign up. You can still check out normally with a card.

Does this work outside the United States?

HSA and FSA are United States tax accounts, so this only helps if you have one. You can still buy anything on our site the normal way.