What Counts as an HSA Expense? Yes/No on 30 Common Buys

Maya, 41, single, lives in Austin, Texas and contributes the full self-only limit of $4,400 to her HSA in 2026. In March she spent $2,800 on Invisalign, in June $3,200 on LASIK, and in October $48 on a box of tampons and some allergy medicine. Every one of those swipes was a qualified expense — she paid $0 in tax or penalty on the withdrawals. Then in November she used her HSA debit card for a $1,200 Peloton. That one is non-qualified. In her 22% federal bracket, the $1,200 will cost her $264 in income tax plus a $240 penalty — $504 in avoidable cost. The entire difference comes down to one statutory test, and once you know it, the yes/no answers fall into place.

The one test that decides everything: IRC §213(d)

An expense is HSA-eligible if it is “medical care” as defined in IRC §213(d) — the same definition used for the itemized medical-expense deduction. In plain English, the expense must be for the diagnosis, cure, mitigation, treatment, or prevention of disease, or for the purpose of affecting a structure or function of the body. The IRS spells out the application in two documents you should bookmark: Publication 969 (HSAs) and Publication 502 (the master list of qualified medical expenses).

The line that trips most people up is the gap between treating a condition (qualified) and general health (not qualified). A prescription to lower your blood pressure is medical care. A gym membership to stay generally fit is not — even though both arguably make you healthier. The code rewards treatment of a specific problem, not wellness in the abstract.

The yes list: what your HSA covers

These are the buys people actually search for, and they are all qualified under §213(d). Spend HSA dollars on any of them and you owe no tax and no penalty:

The no list: what your HSA does NOT cover

These are the most common rejections. Use HSA money on them before 65 and you trigger income tax plus the 20% penalty:

• Gym memberships & fitness equipment — general health, not treatment of a diagnosed condition.
• Vitamins & supplements taken for general wellness — not qualified unless a physician prescribes a specific one to treat a diagnosed condition.
• Cosmetic procedures — elective Botox, teeth whitening, cosmetic surgery, and hair transplants are excluded unless they correct a deformity from a congenital abnormality, injury, or disease (IRC §213(d)(9)).
• Health insurance premiums — generally no, with four exceptions: COBRA, coverage while receiving federal or state unemployment compensation, Medicare premiums once you turn 65, and qualified long-term care insurance (IRS Pub. 969).
• General toiletries — toothpaste, moisturizer, and shampoo are personal-care items, not medical care.

The premium exception is bigger than it looks

Insurance premiums are the most misunderstood line on the no-list, because the four carve-outs above turn into real money in retirement. Once you hit 65, you can use HSA funds to pay Medicare Part B, Part D, and Medicare Advantage (Part C) premiums tax-free. The 2026 Part B base premium is $185.00/month (CMS), or $2,220 a year — paid straight from the HSA with no tax and no penalty. The one premium you cannot pay with an HSA is a Medigap (Medicare Supplement) policy. While working past 65 and still on an employer plan, you can also reimburse the employee share of those premiums.

Qualified long-term-care insurance premiums are also HSA-eligible, but only up to an age-banded annual cap set each year under IRC §213(d)(10) — the older you are, the more of the premium qualifies. COBRA premiums after a job loss and any health-plan premiums paid while you are collecting unemployment round out the four exceptions. Outside those four, regular employer- or marketplace-plan premiums stay non-qualified.

The two rules people don’t know — and they’re the valuable ones

You can spend on your whole tax family, even off the HDHP

You need a high-deductible health plan to contribute to an HSA. But to spend, the rule is far more generous: you can use HSA dollars for the qualified medical expenses of your spouse and tax dependents even if they are not covered by your HDHP — even if they are on a completely different health plan (IRS Pub. 969). So if your spouse is on their employer’s PPO and racks up a $3,000 dental bill, you can pay it from your HSA tax-free. The contribution rule is about you; the spending rule is about your family.

There is no deadline to reimburse yourself

This is the single most powerful HSA feature, and the IRS confirmed it in Revenue Ruling 2004-45 and later guidance: you can pay a qualified expense out of pocket today and reimburse yourself from the HSA years or decades later, tax-free, as long as (1) the expense was incurred after you opened the HSA, and (2) it was not already reimbursed elsewhere. The only thing standing between you and a tax-free reimbursement in 2046 for a 2026 expense is the receipt.

What most people miss: receipts are the whole game

Your HSA custodian does not verify whether a withdrawal was qualified. The debit card swipes for a non-qualified Peloton just as easily as for a qualified prescription. The IRS places the burden of proof entirely on you: if audited, you must substantiate every distribution with a receipt showing the date, the provider, what was purchased, and the amount. No receipt, no defense.

This cuts two ways. First, it means a sloppy swipe can become a taxable event years later if you can’t prove it was medical. Second — and this is the wealth-building angle — because there’s no reimbursement deadline, every receipt you keep is a tax-free withdrawal token you can cash whenever you want. Pay your medical bills from a regular checking account, let the HSA stay invested and compound, and bank the receipts. Twenty years later you can pull out the full stack tax-free. That is the “shoebox strategy,” and it converts the HSA into the most tax-efficient account you own: deductible going in, tax-free growth, tax-free out.

The arithmetic is what makes it worth the filing discipline. Say you incur $2,000 of qualified medical costs in 2026 and pay them from checking instead of the HSA. You keep the receipt and leave $2,000 invested. At a 7% average return, that $2,000 grows to roughly $7,740 over 20 years. You then reimburse yourself the original $2,000 tax-free using the 2026 receipt — and the $5,740 of growth has compounded entirely tax-free as long as it eventually funds qualified care. No other account in the code offers a deduction on the way in, tax-free growth, and a tax-free exit on the same dollars. A traditional IRA taxes the withdrawal; a Roth taxes the contribution. The HSA, used this way, taxes neither.

Practical substantiation: keep a digital copy of every Explanation of Benefits, itemized receipt, and the Form 1099-SA your custodian issues for distributions, plus your Form 8889 (the HSA tax form you file with your return each year). A simple cloud folder organized by tax year is enough — the IRS does not require any special format, only that you can show the expense was qualified, was incurred after the HSA was opened, and was not reimbursed by insurance or another account.

Worked example: the cost of getting it wrong before 65

Here is what a $1,000 non-qualified withdrawal actually costs at different ages and brackets. Before 65, both income tax and the 20% penalty apply; at 65 and beyond, only ordinary income tax applies (IRC §223(f)(4)):

The 20% penalty is steep precisely because it is meant to keep the account in its lane: medical spending. After 65 the penalty disappears and a non-qualified withdrawal behaves exactly like a traditional-IRA distribution — ordinary income, no extra penalty. That is why the account is so flexible in retirement, but before 65 the discipline matters.

The gray-area items: when a “no” becomes a “yes”

A handful of purchases flip from non-qualified to qualified when a physician documents medical necessity. The mechanism is a Letter of Medical Necessity (LMN) — a written statement from a provider tying the expense to the treatment of a specific diagnosed condition. With an LMN on file, these can qualify:

1. Supplements — e.g., prescribed iron for diagnosed anemia, or prenatal vitamins during pregnancy.
2. Weight-loss programs — qualified when prescribed to treat a diagnosed disease such as obesity, hypertension, or heart disease (not for general dieting).
3. Massage therapy — qualified when prescribed to treat a specific injury or condition, not for relaxation.
4. Special foods — the cost above the price of ordinary food, when prescribed for a condition like celiac disease.

Keep the LMN with your receipts. It is the document that converts a challengeable expense into a defensible one.

The decision lever

Spend HSA dollars only on expenses that pass the §213(d) test — treatment of a condition, not general wellness — and keep a receipt for every single one. That one habit does two jobs: it protects you from the 20% penalty if you’re ever audited, and it builds the receipt bank that lets you pull money out tax-free decades from now. If you can pay this year’s qualified medical bills from your checking account instead of the HSA, do it: leave the HSA invested, file the receipts, and let the only triple-tax-advantaged account in the code compound until you choose to cash the receipts.