The durable medical equipment sales tax exemption is available in most states that collect sales tax, but only when the item meets a specific four-part legal definition and, in most cases, only when the buyer presents a prescription and exemption certificate at purchase. The savings on a single item like a power wheelchair or home oxygen concentrator can run several hundred dollars, so getting the classification and paperwork right is worth the effort.
The Four Criteria That Define DME
Most state tax codes borrow their definition of durable medical equipment from the Streamlined Sales and Use Tax Agreement, a framework adopted by the majority of states to standardize product classifications. Under that definition, an item qualifies as DME only if it meets all four of these tests: it can withstand repeated use, it is primarily and customarily used for a medical purpose, it is generally not useful to someone without an illness or injury, and it is not worn in or on the body.1Streamlined Sales Tax Governing Board. Medical Equipment Issue Paper
The “repeated use” test does not carry a universal minimum lifespan under the standard state-level definition. The practical effect is straightforward: disposable and single-use products never qualify.
The medical-purpose test excludes items that simply promote general wellness. A treadmill might improve someone’s cardiovascular health, but it serves the same function for a healthy person. Equipment that passes this test is designed for a clinical application tied to a diagnosed condition.
The fourth criterion catches people off guard. DME cannot be worn in or on the body.1Streamlined Sales Tax Governing Board. Medical Equipment Issue Paper That single requirement pulls hearing aids, orthotic braces, compression garments, and similar body-worn devices out of the DME category entirely. Those items may still be tax-exempt under a separate statutory category for prosthetic devices, but they are legally distinct from DME. If a seller tells you a body-worn device does not qualify for the DME exemption, they may be technically correct while a prosthetic device exemption still applies. Ask about the right category.
Home Use Requirements
The federal Medicare definition of DME adds a fifth element that many states incorporate into their own tax rules: the equipment must be appropriate for use in the patient’s home.2Office of the Law Revision Counsel. 42 USC 1395x – Definitions States that adopt this limitation exclude professional-grade machines that only function in a clinical or hospital setting. Under the Streamlined Sales Tax framework, adding a home-use requirement is optional, so whether it applies depends on where you live.1Streamlined Sales Tax Governing Board. Medical Equipment Issue Paper
Home use does not mean stay-at-home use. Portable oxygen concentrators and power wheelchairs travel with the patient. The test is whether the device is designed for daily life rather than requiring hospital infrastructure to operate.
Common Items That Qualify
The items most reliably classified as tax-exempt DME are large, expensive, and obviously medical in nature. The federal Medicare statute specifically names hospital beds, wheelchairs (including power-operated models when medically necessary), oxygen tents, and blood glucose monitors for people with diabetes.2Office of the Law Revision Counsel. 42 USC 1395x – Definitions State tax exemptions do not automatically mirror Medicare’s list, but these examples illustrate the type of equipment the definition targets.
Respiratory equipment is among the most commonly exempted categories. Home oxygen concentrators, CPAP machines, and nebulizers are built for daily operation, serve a clear medical purpose, and have no value to someone without a respiratory condition. Prices range from a few hundred dollars for a basic nebulizer to well over $2,000 for a portable oxygen concentrator, so the tax savings alone can be meaningful.
Home dialysis machines and adjustable hospital beds qualify through the same logic. So do suction machines, patient lifts, and infusion pumps. Bath safety equipment such as shower chairs and raised toilet seats with medical-grade framing can qualify when their primary engineering purpose is injury prevention for a diagnosed condition rather than general convenience.
Items That Don’t Qualify
Disposable Medical Supplies
Products designed for a single use fail the “withstand repeated use” criterion by definition. Surgical masks, disposable gloves, syringes, sterile bandages, and incontinence products are classified as medical supplies, not equipment. Some states exempt certain medical supplies under a separate statute with its own conditions, such as requiring a prescription or limiting the exemption to supplies eligible for Medicaid reimbursement.
Comfort and General Wellness Products
Air purifiers, humidifiers, massage chairs, exercise equipment, and ergonomic furniture all fail the medical-purpose test because they benefit anyone regardless of medical condition. Even if a doctor recommends a specific product for a health reason, the legal test looks at whether the item is “primarily and customarily” used for a medical purpose across the general population, not just in one person’s case.
Home Modifications
Permanent ramps, stairlifts, roll-in showers, and other structural changes to a building are real property improvements, not portable medical devices. Once installed, they become part of the home and are taxed under construction and building codes rather than consumer goods rules. Even when a physician prescribes a wheelchair ramp, the materials and labor are typically subject to standard sales tax.
How the Exemption Varies by State
Five states have no general sales tax at all, so the exemption is irrelevant there. Among states that do collect sales tax, treatment of DME varies more than most people realize. Roughly two dozen states and the District of Columbia exempt DME when accompanied by a prescription. Around fifteen additional states exempt qualifying equipment even without a prescription. The remaining states either tax DME at standard or reduced rates or limit exemptions to equipment reimbursed through Medicare or Medicaid.
A few patterns stand out. Some states tax DME at a reduced rate rather than exempting it entirely. Others restrict the exemption to equipment sold for home use, excluding purchases by hospitals or clinics. And at least a few condition the exemption on whether the purchase is paid for or reimbursed by a government health program. Checking your state’s revenue department website before a large purchase is the single most valuable step you can take.
How to Claim the Exemption
Prescription Requirements
Most states require a prescription or written order from a licensed healthcare provider before they will grant the DME exemption. The prescription should identify the patient, the specific equipment, and the medical condition it addresses. Roughly a third of sales tax states exempt qualifying DME without requiring a prescription at all. Verify your state’s rule before assuming a prescription is necessary or unnecessary.
Exemption Certificates
Many retailers ask the buyer to complete a sales tax exemption certificate at the point of sale. The most widely accepted multi-state form is the Streamlined Sales Tax Certificate of Exemption (SSTGB Form F0003), recognized in all member states of the agreement.3Streamlined Sales Tax Governing Board. Streamlined Sales Tax Certificate of Exemption The form does not have a dedicated checkbox for medical equipment. You select reason code “L – Other” and briefly explain that the purchase is exempt DME prescribed for medical use.
The certificate asks for the buyer’s and seller’s names and addresses, a description of the purchaser’s business or organization, and a state-issued ID number (many states accept a driver’s license number for individual consumers). The buyer signs under penalty of perjury that the exemption claim is valid. False information can result in penalties and denial of the exemption during an audit. Not every state requires a certificate for individual DME purchases, but completing one protects both you and the retailer.
Point-of-Sale and Refund Claims
The simplest path is presenting your documentation at checkout so the retailer removes the tax before you pay. Large medical supply companies and online sellers often have dedicated teams that verify exemption paperwork, and online portals typically let you upload prescriptions and certificates digitally before the order ships.
If you paid tax and later realize the purchase qualified, file a refund claim with your state’s revenue agency. That involves submitting a formal application along with the original receipt, your prescription, and any required exemption forms. Some states are legally required to act within six months, and many resolve claims faster, but expect at least several weeks. The refund typically arrives as a check or direct deposit for the exact tax amount overpaid.
Keeping Your Records
Hold onto copies of prescriptions, exemption certificates, and purchase receipts for at least three to four years after the transaction. State audit windows typically cover at least three years, and some states can look back further if returns were never filed or fraud is suspected. Sellers are also required to retain copies of exemption documentation, but relying on a retailer to have your paperwork years later is not a strategy. Keep your own files.
Repairs, Replacement Parts, and Rentals
The standard DME definition under the Streamlined Sales Tax Agreement includes “repair and replacement parts” within the scope of the equipment itself.1Streamlined Sales Tax Governing Board. Medical Equipment Issue Paper A replacement motor for a power wheelchair or a new mask for a CPAP machine qualifies for the same exemption as the original device in states that follow this definition. You typically need the same documentation, including evidence that the original equipment was prescribed.
Labor charges for repairs are a different story. Whether the service portion of a repair bill is taxable depends on how your state treats services generally. States that tax most services will often tax the labor on a DME repair even though the replacement part itself is exempt. States that exempt services from sales tax will not tax the labor regardless. There is no uniform national rule here.
Rental and lease payments for DME generally receive the same treatment as purchases. The federal Medicare statute defines DME to include equipment “whether furnished on a rental basis or purchased.”2Office of the Law Revision Counsel. 42 USC 1395x – Definitions Most states follow this approach. If you are renting an oxygen concentrator or hospital bed through a medical supply company, each monthly payment should reflect the exemption.
Bundled Purchases and Shipping Charges
Medical equipment often ships with accessories, replacement supplies, or carrying cases bundled into a single price. When exempt DME is packaged with taxable items and sold for one non-itemized price, the tax treatment depends on how much of the bundle is taxable. Under the Streamlined Sales Tax rules, if the taxable portion of the bundle is 50 percent or less of the total price, the entire transaction stays exempt. If the taxable portion exceeds 50 percent, the full price may be subject to tax.4Streamlined Sales Tax Governing Board. Bundled Transactions Issue Paper If you are buying a starter kit that mixes exempt equipment and taxable supplies, ask the seller to itemize the invoice. Separate line items avoid the bundled transaction analysis entirely.
Shipping and delivery charges generally follow the tax status of what is being shipped. When the underlying product is exempt, the delivery fee is usually exempt too. Mixed shipments create a wrinkle: if one delivery includes both taxable and exempt items, the shipping charge typically must be allocated so that only the portion attributable to taxable items gets taxed. Asking the seller to ship exempt items separately or to itemize delivery charges by product avoids the calculation.