You can buy a massage gun with HSA funds, but only if a licensed healthcare provider has documented in writing that the device is medically necessary to treat a diagnosed condition. Without that documentation, the IRS treats the purchase as a personal expense, and you’ll owe ordinary income tax on the amount plus a 20% penalty. The device isn’t the deciding factor. Your reason for buying it is.
Why the Device Alone Doesn’t Qualify
HSA-qualified medical expenses are defined by Section 223 of the Internal Revenue Code, which points to the definition of “medical care” in Section 213(d).1Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts Section 213(d) covers amounts paid for the diagnosis, cure, treatment, or prevention of disease, or for affecting any structure or function of the body.2Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses That last phrase sounds broad, but the IRS narrows it: the expense must primarily alleviate or prevent a physical or mental condition, not simply benefit your general health.3Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
Massage guns have obvious non-medical uses. Someone recovering from a shoulder injury and someone loosening up after the gym use the same device for very different reasons. Post-workout recovery, stress relief, and general soreness are personal expenses. A device prescribed as part of a treatment plan for a diagnosed condition is medical care.
Conditions That Typically Support Eligibility
A massage gun is most defensible as an HSA expense when it’s prescribed for a specific, documented condition that percussive therapy is known to address. Common examples include chronic myofascial pain syndrome, injury rehabilitation such as a shoulder injury from an accident, sciatica, fibromyalgia, and chronic back or neck pain tied to structural issues. In each case, a provider has identified the condition, decided percussive massage is part of the treatment, and written it down.
Athletic performance and general wellness don’t clear the bar. If your provider’s recommendation is essentially “it would be good for you to have one,” that’s not a prescription for a diagnosed condition, and it’s the exact distinction an IRS review would probe.
The Letter of Medical Necessity
The document that turns a retail purchase into a qualified medical expense is called a Letter of Medical Necessity. Skipping it almost guarantees the expense won’t hold up if questioned.
A solid letter includes:
- The specific diagnosis in clinical terms your provider would chart, such as “lumbar radiculopathy” rather than “back pain.”
- Why percussive therapy addresses that condition, as opposed to alternatives.
- Recommended frequency and duration of use, showing the device is part of a structured treatment plan.
- How long the provider expects the device to be medically needed. Most HSA administrators treat a letter without a stated duration as valid for 12 months, after which a new letter is required.
- The signature, license information, and contact details of the prescribing provider.
Physicians, physical therapists, and chiropractors are the most common signatories, though which provider types an HSA administrator will accept can vary. When in doubt, a letter from your primary care physician or the specialist treating your condition is the safest route.
Get the Letter Before You Buy
Many HSA administrators require the letter to be dated on or before the purchase. A letter obtained after the fact looks like you bought first and shopped for a justification later. If your provider recommends a massage gun during an appointment, ask for the letter before you leave.
Renewals for Ongoing Use
If treatment continues past the period covered by the original letter, you need a new one for the next period. This matters for related purchases too: replacement heads, medical accessories, or a second device if the first breaks. Each HSA-funded purchase needs to fall inside the window of a valid letter.
Paying With Your HSA
Once you have the letter, there are two ways to complete the purchase.
The simplest is your HSA debit card at a retailer or online store that accepts it. Keep the itemized receipt showing date, item description, and amount.
If the retailer doesn’t take HSA cards, pay out of pocket and reimburse yourself later. Log in to your HSA provider, enter the expense details, and request a distribution by electronic transfer or check.4Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans – Section: Distributions From an HSA Uploading your receipt during the request is worth doing for your own records even when the administrator doesn’t require it.
There’s no deadline for reimbursement. You can pay today and reimburse yourself years later, as long as the expense occurred after your HSA was established and you kept the documentation.
What the Register Signal Actually Means
Retailers that accept HSA cards use an inventory verification system called IIAS, managed by an industry group called SIGIS. It flags products at checkout as HSA-eligible or ineligible based on category codes. Massage guns marketed for therapeutic use, with product descriptions emphasizing pain relief or deep-tissue treatment, may pass at some retailers.5SIGIS: Special Interest Group for IIAS Standards. SIGIS Eligible Product List Criteria Devices categorized as general relaxation products typically won’t.
A transaction going through at the register is not an IRS determination. If your card works but you have no Letter of Medical Necessity on file, you’re still exposed in an audit. The reverse also holds: if the card is declined, you can pay out of pocket and reimburse yourself later, provided the documentation is in order.
What It Costs If the Purchase Doesn’t Qualify
Using HSA funds for something the IRS doesn’t consider a qualified medical expense adds the distribution to your gross income for that year at your ordinary rate, plus a 20% penalty on the amount.6Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts – Section: 223(f)(4) On a $400 massage gun, the penalty alone is $80. In a 22% federal bracket, the total hit lands around $168.
Two exceptions eliminate the 20% penalty. If you become disabled or reach the age specified for Medicare eligibility (currently 65), the penalty goes away, though the ordinary income tax on the distribution still applies.7Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts – Section: 223(f)(4)(B) and (C) The same exception applies to distributions made after the account holder’s death.4Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans – Section: Distributions From an HSA
Records to Keep
The IRS requires you to keep records proving HSA distributions went to qualified medical expenses, that those expenses weren’t reimbursed from another source, and that you didn’t also claim them as an itemized deduction.4Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans – Section: Distributions From an HSA You don’t file them with your return, but you need them if asked.
For a massage gun, hold onto three things: the Letter of Medical Necessity, the itemized purchase receipt, and any reimbursement confirmation from your HSA provider. The IRS generally requires tax records for at least three years from the date you file the return reporting the distribution. Because HSA reimbursements can be claimed years after the original expense, a practical approach is keeping the file until well after you’ve filed the return claiming it. A simple digital folder works. If your letter is renewed for continued treatment, keep the original and renewals together so the full timeline is documented.