Stress-relief devices can be purchased with HSA or FSA dollars when they treat a diagnosed medical condition, not when they are bought for general relaxation. HSA/FSA eligible stress-relief devices generally fall into three groups: items with a clear therapeutic function that most administrators approve on sight, dual-use items like massage guns that require a Letter of Medical Necessity, and personal-comfort products that rarely qualify no matter what documentation you provide. Using the accounts correctly saves roughly 20 to 35 percent on the purchase price. Using them incorrectly can mean a denied claim or, with an HSA, a 20 percent penalty on top of income tax.
The Rule That Decides Everything
Both accounts follow the same standard. Under federal tax law, “medical care” means amounts paid to diagnose, treat, or prevent disease, or to affect a structure or function of the body.1Office of the Law Revision Counsel. 26 USC 213 – Medical, Dental, Etc., Expenses HSA-qualified expenses are defined by the same statutory section.2Office of the Law Revision Counsel. 26 USC 223 – Health Savings Accounts The IRS has confirmed that anything qualifying under that definition can be reimbursed through an HSA, FSA, or HRA.3Internal Revenue Service. Frequently Asked Questions About Medical Expenses Related to Nutrition, Wellness and General Health
IRS Publication 502 adds the detail that governs stress-relief purchases: you cannot deduct the cost of items ordinarily used for personal purposes unless the item is used primarily to prevent or alleviate a physical or mental disability or illness.4Internal Revenue Service. Publication 502 – Medical and Dental Expenses General wellness purchases like gym memberships and health club dues are explicitly excluded even when they reduce stress. The practical test: would you have bought the device without the medical condition? If yes, it is personal. If the reason for buying it is treating a diagnosed condition, it can qualify.
Which Devices Qualify, and Which Ones Don’t
The IRS does not publish a master list. Eligibility turns on the item, the condition, and the primary purpose of the purchase. In practice, three groups emerge.
Usually Eligible Without Extra Paperwork
TENS units, light therapy lamps used for diagnosed seasonal affective disorder, and acupressure mats used for pain treatment are generally treated as qualified medical expenses by most plan administrators. These items have a clear therapeutic function that maps to a diagnosis. Many online retailers and FSA specialty stores flag them as eligible at checkout, though the administrator has the final say.
Eligible With a Letter of Medical Necessity
Massage guns, biofeedback devices, and similar products straddle the line between medical equipment and personal comfort. A massage gun bought for chronic pain treatment can qualify; the same device bought for post-workout recovery does not. When a product has obvious dual-use potential, most administrators require a Letter of Medical Necessity tying it to a specific diagnosis before they approve reimbursement.
Rarely Eligible
Weighted blankets, aromatherapy diffusers, and sound machines are generally treated as personal comfort items. Some administrators may approve a weighted blanket with a strong LMN linking it to clinical anxiety or autism spectrum disorder, but denials are common. The more a product looks like something sold in a general home goods store, the harder it is to classify as medical equipment.
When in doubt, call your plan administrator before buying. A two-minute call can save you from paying full price for a device your plan would have covered, or from buying something it will never approve.
What a Letter of Medical Necessity Needs to Say
A Letter of Medical Necessity is a signed statement from a healthcare provider that a specific device is needed to treat a diagnosed condition. For most stress-relief devices, it is the single most important document in the reimbursement process.
A usable letter includes:
- A specific diagnosis such as generalized anxiety disorder, chronic pain syndrome, clinical insomnia, or PTSD. Vague descriptions like “stress” or “trouble sleeping” tend to be rejected.
- The recommended device by name, with an explanation of how it treats the symptoms of the condition.
- The treatment duration, whether ongoing use or a defined period.
- The provider’s name, medical license number, contact information, and signature with date.5FSAFEDS. Letter of Medical Necessity
The letter has to establish that the purchase is medically necessary for the diagnosed condition, not just generally beneficial. An LMN saying a massage gun “may help with relaxation” is almost guaranteed to be denied. One stating that a percussion therapy device is prescribed to manage chronic myofascial pain from a documented spinal injury carries real weight.
Get the letter before you buy. Submitting it after the fact raises flags with administrators and can trigger extra verification. A physician, physician assistant, nurse practitioner, or other licensed provider can sign. For anxiety, PTSD, or other mental health conditions, a licensed psychologist or psychiatrist is the most credible signer. Some administrators use their own LMN form, so check your plan portal before asking your provider to draft a freeform letter.
Filing the Claim
Once you have the LMN and the device, filing is straightforward. You need three things: the LMN, an itemized receipt showing the purchase date, merchant name, item description, and total paid, and a claim form from your administrator.
Most administrators provide claim forms through an online benefits portal. You enter your member ID, the date of the expense, a description of the item, and the amount requested, then upload the receipt and LMN. Mailed claim packages are usually still accepted for people without digital access.
Make sure the item description on your receipt matches the language in your LMN. If the doctor’s letter recommends a “percussion therapy device for myofascial pain relief” and the receipt reads “massage gun,” the mismatch can slow processing. Some buyers ask the retailer for a detailed receipt or print the product listing to attach alongside the standard one.
If the Claim Is Denied
Processing speed varies. Some federal employee plans process verified claims within one to two business days, with direct deposit shortly after.6FSAFEDS. FAQs – How Long Will It Take to Receive Reimbursement Private-employer plans may take a week or more, especially when an LMN needs manual review.
If a claim is denied, you generally have the right to appeal. The federal employee FSA program uses a multi-step process: an informal appeal within 30 days, a formal written appeal within 60 days if that fails, and an independent third-party review as a final step.7FSAFEDS. Appeals Process Quick Reference Guide Private-employer plans vary, but most follow a similar escalation structure. Include a more detailed LMN, any additional medical records supporting the condition, and a written explanation tying the expense to the tax code’s definition of medical care.
HSA and FSA Differences That Matter for a Device Purchase
Both accounts pay for qualified medical expenses with pre-tax dollars, but the mechanics differ in ways that matter when you are planning a larger purchase like a biofeedback system or a light therapy setup.8Internal Revenue Service. Publication 969 – Health Savings Accounts and Other Tax-Favored Health Plans
HSA
You must be enrolled in a high-deductible health plan to contribute. The 2026 contribution limit is $4,400 for self-only coverage and $8,750 for family coverage.9Internal Revenue Service. Revenue Procedure 2025-19 If you are 55 or older, you can add another $1,000 as a catch-up contribution.10Internal Revenue Service. HSA Contribution Limits The biggest advantage for device purchases is that unused funds roll over indefinitely. You can save across multiple years for an expensive device without losing your balance.
FSA
FSAs do not require a high-deductible health plan, so they are available to more people. The 2026 contribution limit is $3,400. Unlike HSAs, FSAs are use-it-or-lose-it: unspent funds generally disappear at year-end. Employers can soften this in one of two ways. Some plans allow a carryover of up to $680 into the next year.11FSAFEDS. Message Board Others offer a grace period of two and a half extra months to incur expenses against the prior year’s balance. Employers can offer one or the other, not both.
That deadline pressure is where FSA holders most often stumble with stress-relief devices. Rushing a purchase at year-end without proper documentation leads to denied claims and forfeited funds. Get the LMN early in the plan year so there is time to handle a denial or appeal.
Penalties for Ineligible Purchases
If you use FSA funds on an ineligible item and cannot produce documentation to reclassify it, the administrator will typically require repayment. Because FSAs are employer-sponsored, the employer bears the financial risk and will pursue the money.
HSA penalties are steeper. A withdrawal for something that does not qualify as a medical expense is added to your gross income for the year, and you owe an additional 20 percent penalty tax on top of your regular income tax rate.12Congress.gov. Health Savings Accounts (HSAs) On a $300 massage gun that turns out to be ineligible, that is roughly $60 in penalty plus another $60 to $100 in income tax depending on your bracket. The penalty stops at age 65, though income tax on non-medical withdrawals still applies.
The cleanest way to avoid this is to confirm eligibility with your administrator before buying and to have the LMN in hand before spending the money.
Deadlines to Track
Missing a deadline is the most common way people lose pre-tax health dollars. For FSA holders, three dates matter:
- Plan year end, the last day you can incur an eligible expense against the current-year balance. Often December 31, but some employers use a different fiscal year.
- Grace period end, if your plan offers one, giving you two and a half extra months after the plan year ends to spend remaining funds.
- Run-out period end, the deadline to submit claims for expenses already incurred during the plan year. Most plans allow 30 to 90 days after the plan year ends. The expense itself must have occurred during the plan year; the run-out only extends the filing window.
HSA holders face no spending deadline, since funds roll over. Contribution deadlines still apply. You must make 2026 contributions by the tax filing deadline in April 2027. If you over-contribute and do not withdraw the excess by that date, the excess is subject to a 6 percent excise tax for each year it stays in the account.12Congress.gov. Health Savings Accounts (HSAs)
For either account, keep receipts and LMNs for at least three years after the tax year you claimed the expense. The IRS can request documentation during that window, and finding a receipt from two years back is much easier when you scan it on the day of purchase.