Open Enrollment With Celiac Disease: Picking an FSA or HSA That Pays for Gluten-Free Food

7 min read · Updated October 2026

Open enrollment is the one window each year when you can set up the account that pays you back for the extra cost of gluten-free food. If someone in your house follows a medically necessary gluten-free diet, this is a more consequential decision than it looks.

Quick note: I am a person living with celiac disease, not a tax professional or a licensed adviser. This is general information to help you ask better questions, not advice about your situation.

Why this matters more for a gluten-free household

The IRS has long treated the extra cost of medically necessary special diet food as a medical expense. Not the whole grocery bill, just the difference between the gluten-free product and an ordinary equivalent.

A loaf of gluten-free bread at $6.49 against an ordinary loaf at $2.92 is a $3.57 claim. Small on its own. Repeated across bread, pasta, crackers, cereal and flour, every week, for a year, it becomes a real number.

But you can only claim it through an account you actually have. That is what open enrollment decides, and if you skip it you wait another year.

The three routes, and which one you are choosing between

Be wary of anyone who presents the tax deduction as a third equal option. Medical expenses are only deductible above 7.5% of your income, and only if you itemise. A grocery premium on its own almost never clears that. It matters in a year with large medical bills, and otherwise it is a footnote.

So in practice, open enrollment is a choice between an FSA and an HSA.

How to choose, honestly

Choose an HSA if you can

An HSA is better for this particular use, for three reasons that all matter to a gluten-free household:

• Nothing is forfeited. The balance rolls over forever, so there is no December scramble.
• No claim forms. You reimburse yourself. Nobody has to approve it in advance.
• You can take your time. A receipt from March can be reimbursed in November, or years later, as long as the purchase came after the account was opened.

The catch is that you cannot simply choose an HSA. You qualify through your health plan. It has to be an HSA-qualified high-deductible plan, which for 2026 means a deductible of at least $1,700 for one person or $3,400 for a family. You also cannot be on Medicare or claimed as someone else's dependent.

Once you qualify, you may contribute up to $4,400 for self-only coverage or $8,750 for a family in 2026, plus an extra $1,000 from age 55.

The thing people miss. An HSA is an individual account, a bit like an IRA. If your employer does not offer one, you can open your own with a provider such as Fidelity or Lively, as long as your health plan qualifies. No employer involvement needed, and contributions are deductible even if you do not itemise.

Choose an FSA if the HSA route is not open to you

An FSA is the right answer for a lot of people, and it is worth saying clearly that it is not a consolation prize. The money is pre-tax, it is available from day one of the plan year, and it reimburses the same gluten-free premium.

Its weaknesses are real but manageable: the money is mostly use-it-or-lose-it, and you have to submit claims with documentation rather than paying yourself.

The planning question is how much to elect. Work out the gluten-free premium you are actually paying first, rather than guessing, because electing too much is how people end up forfeiting money.

A high-deductible plan is not automatically the right answer

This is where I want to be careful. An HSA is better for claiming groceries. That does not mean a high-deductible health plan is better for your household overall.

If someone in your family has significant ongoing medical needs, a lower-deductible plan may cost you far less across the year than the HSA is worth. Celiac disease often travels with other conditions, and this is a real trade-off, not a technicality. Work out the total cost of each plan before letting the HSA tail wag the dog.

One timing rule worth planning around

An HSA only covers expenses incurred after the account is established. Not after you decided to open one, and not after you first contributed. After it exists.

So if you are opening one in January, open it before your first grocery run of the year, not after. People lose a month of claimable shopping to this every year for no reason.

Your enrollment checklist

Common questions

Can I have both an FSA and an HSA?

Not a general-purpose FSA alongside an HSA. A limited-purpose FSA, usually dental and vision only, can be combined with an HSA. Your benefits administrator can tell you what your employer offers.

I missed open enrollment. Is that it for the year?

For an FSA, usually yes, unless you have a qualifying life event such as marriage, a birth, or a job change. For an HSA, no. If your health plan already qualifies you can open one yourself at any time.

What if I am self-employed?

An FSA is not available, since it requires an employer. An HSA is, as long as your health plan qualifies, and it is one of the better options available to self-employed people with a chronic condition.

Does my child's diagnosis count if the plan is in my name?

Expenses for a dependent are generally eligible. The letter of medical necessity should name the person who needs the diet.

How long does the doctor's letter take?

Days if your practice has a patient portal, weeks if it needs an appointment. Ask now rather than in January. See our template and how to ask.