Medical Spa Taxes: The Medical Director, the Injectables Inventory, the Memberships, and the Corporate Practice Rule

A medical spa is a medical practice and a retail business under one roof, and the return — and the structure — follows which is which. The corporate practice rule — ownership first: in states that apply the corporate practice of medicine doctrine, a business that provides medical treatments (injectables, lasers that penetrate the skin, prescription treatments — the state's medical board decides which services are "medical") must be owned by physicians (or, in some states, by nurse practitioners or other licensed practitioners within their scope), and a non-physician owner uses the management services organization structure — the non-physician owns a management company that holds the business assets, employs the non-clinical staff, leases the space and equipment, and provides management services to a professional entity owned by the medical director (or another physician) that holds the clinical practice and employs or contracts the clinical staff, paying the management company a fee; in states without the doctrine (or with a narrower one), a non-physician may own the med spa directly with a supervising physician under contract; the structure is a legal decision made before the tax one, and it decides whose return shows what (the medical spa entity guide). The medical director and the supervision: every med spa offering medical treatments needs a supervising physician (a medical director) — paid a monthly fee or a percentage (a contractor with a W-9 and a 1099-NEC, usually, when the physician is supervising rather than employed; employed when the arrangement's control points that way), with the supervision's requirements (chart review, protocols, the good-faith exam before treatment, on-site or available presence) set by the state's medical board and the fee's structure constrained by the anti-kickback and fee-splitting rules (a percentage of revenue for a supervising physician is prohibited as fee-splitting in some states — the arrangement is reviewed by healthcare counsel); the nurse injectors, nurse practitioners, and physician assistants who perform treatments on the business's schedule with its products are employees in nearly every arrangement (the carpet cleaning classification guide — the 1099 injector paid per unit is the sector's common misclassification), and their licenses, certifications, and training are deductible when the business pays them. The injectables and the inventory — the margin: neurotoxins and dermal fillers bought from the manufacturers (or their distributors) are the largest cost of goods sold — a vial of toxin or a syringe of filler costs a large share of what the patient pays for it — inventory, expensed as used (per unit injected) with a year-end count of the refrigerator and the stock (a count that doubles as the prescription-product lot and usage log the manufacturers' and the state's rules require), with the manufacturers' loyalty programs (patient rewards points the manufacturer funds — its reimbursement replaces the part of the price the patient didn't pay, so it is treatment revenue, or a reduction in product cost when credited against purchases; the business's own volume rebates and tier pricing — reductions in inventory cost when received) and the product's expiry (expired product written off — a deduction when disposed, documented); the other consumables (numbing cream, needles, cannulas, the laser tips and the gels) are supplies. The equipment: lasers and energy devices (six figures each — section 179 or bonus depreciation, or leased; a device bought with a financing package from the manufacturer that includes consumables and training is analyzed as a purchase with a separate supply contract), the treatment chairs, the imaging systems, the body-contouring machines, and the per-treatment tip or cartridge costs (supplies — sometimes the largest cost per treatment on a device); the device's service contract (an expense). Memberships, packages, and gift cards — the advance-payment question: med spas sell monthly memberships (a fee that accrues credits or discounts), prepaid treatment packages (a series of six laser sessions paid up front), and gift cards (heavily in December) — under the cash method (most med spas, with average annual gross receipts of US$32 million or less for 2026), income when received, so a December of package and gift card sales is December income for treatments delivered in January through June; under the accrual method, the advance payments may be deferred one year to the extent unearned (the consulting revenue recognition guide) — a method worth examining for a med spa whose prepaid balances are large; and the unused package balances and breakage follow the method's rules (with the state's unclaimed-property law as a separate question for gift cards). The retail line: medical-grade skincare sold to patients — inventory with a count, revenue and cost on separate lines, and sales tax on the retail sales in every sales-tax state; the medical treatments themselves are generally exempt from sales tax, but a few states tax elective cosmetic procedures — the business confirms its own state's rule; the non-medical spa services (facials, massages where the state taxes them) have their own treatment. Tips on those services are wages the business reports and withholds on, and its employer Social Security and Medicare tax on them is creditable under section 45B, which covers esthetics and body and spa treatments for tax years beginning after 2024. Compliance and licensing: the medical director's license, the practitioners' licenses and the state's delegation and supervision requirements, the facility permits, the laser registration (some states register lasers or require laser operator certification), the prescription-product lot and usage records, HIPAA (a med spa that bills electronically, or keeps medical records, is a covered entity or close enough to adopt the program — the HHS rules), OSHA's bloodborne pathogen program, the medical waste hauler, and the manufacturers' training and certification requirements — all deductible. Insurance: medical malpractice (for the medical director and the practitioners — the injector's policy is the sector's core coverage), general liability, product liability on the retail line, property and equipment breakdown (the laser), cyber (the patient photos are protected health information), and employment practices — all deductible. Marketing: the before-and-after photography, social media and the influencer arrangements (the FTC's endorsement disclosure rules apply; complimentary treatments given to influencers are a marketing cost at the business's cost, and income to the influencer at fair market value — the business issues a Form 1099-NEC when the treatments' value plus any cash reaches US$2,000 in 2026 (US$600 before)), the events (the "injectable parties" — marketing costs, with the food at the marketing-event rate), the loyalty program, and the referral credits (a patient's referral credit is a price reduction). The specified service question: the "health" field includes medical services performed by physicians, nurses, and other health professionals — a med spa whose revenue is predominantly injectables and medical treatments performed by licensed practitioners is likely in the health field (an SSTB), while one whose revenue is predominantly non-medical aesthetic services (facials, body treatments by aestheticians) and retail is not (aesthetic services by non-medical staff aren't medical services — the regulations' own exclusion covers only health clubs and health spas offering exercise or conditioning); a mixed business applies the de minimis rule — medical services at 10 percent or more of gross receipts (5 percent above US$25 million) make the whole business an SSTB unless the lines are genuinely separate trades (the SSTB guide) — and the management company in an MSO structure, providing management rather than medical services, is generally not an SSTB — unless it shares 50 percent or more common ownership with the professional entity, in which case the part of its business serving that entity is treated as an SSTB itself. The bookkeeping: revenue by line (medical treatments, non-medical services, retail, memberships and packages at receipt with the outstanding balances tracked, gift cards); inventory of injectables and retail with the count and the lot and usage records; supplies; the medical director's fee and the arrangement's documentation; practitioners on payroll; equipment and financing; compliance and licensing; insurance; sales tax by line and the state's cosmetic tax if any; the MSO fee between entities if structured that way. The errors: the non-physician owner operating a medical practice directly in a corporate-practice state (a legal problem before a tax one); the injectors on 1099s paid per unit; the manufacturer's patient-reward reimbursements left off the books; the package and gift card sales treated as deferred under the cash method; the retail line's sales tax missed; and a supervising physician paid a percentage of revenue in a state that treats it as fee-splitting.

Key takeaways

• Ownership comes first: in corporate-practice states, a non-physician owns a management company that serves a physician-owned professional entity; elsewhere, a non-physician may own the med spa with a supervising physician under contract — a legal decision before a tax one.
• The medical director is usually a contractor (W-9, 1099-NEC) with a fee structure healthcare counsel has reviewed; the nurse injectors and nurse practitioners are employees.
• Injectables are inventory expensed per unit used, with a year-end count that doubles as the lot and usage record; manufacturer reward reimbursements are revenue; expired product is written off when disposed.
• Memberships, packages, and gift cards are income when received under the cash method; the accrual method's one-year deferral is worth examining for a med spa with large prepaid balances.
• Retail skincare carries sales tax everywhere; medical treatments are generally exempt, but some states impose a cosmetic procedures tax.
• A med spa that is predominantly medical treatments is likely a specified service trade (health); one with medical services under 10 percent of gross receipts is not; at 10 percent or more, the whole business is an SSTB unless the lines are separate trades.

The medical spa's deduction file

Structure: corporate-practice analysis; MSO agreement and fee if applicable. Medical director agreement (fee structure reviewed); practitioners on payroll. Injectables and retail inventory: counts; lot and usage records; expiry write-offs; rebates as cost reductions; reward reimbursements as revenue. Supplies and device consumables. Equipment and financing (purchase vs supply contract). Revenue by line; memberships, packages, gift cards with outstanding balances; the method. Sales tax: retail everywhere; cosmetic procedures where taxed. Compliance: licenses, supervision, laser rules, HIPAA, OSHA, medical waste. Insurance (malpractice, GL, product, equipment, cyber, EPL). Marketing: influencer arrangements and their 1099s. SSTB analysis by revenue mix. The structure file and the inventory count are the two items the medical board and the IRS both reach.

Worked example

A med spa in a corporate-practice state, owned by a non-physician: her management company (an S corporation) owns the lasers, the lease, the retail inventory, and employs the front desk, the aestheticians, and the manager; a professional corporation owned by the medical director employs the two nurse practitioners and three nurse injectors and pays the management company a fixed monthly management fee at fair market value (the MSO agreement reviewed by healthcare counsel); the medical director is paid by the professional corporation under an agreement structured to avoid fee-splitting. The professional corporation's revenue: US$1.9 million of injectables and laser treatments; its injectables inventory (US$390,000 of cost of goods sold, counted monthly with the lot and usage records; US$8,000 of expired product written off; the manufacturer's reward reimbursements booked as revenue). The management company's revenue: the management fee, US$140,000 of retail skincare (sales tax collected), and US$90,000 of aesthetician facials; its lasers (US$210,000 of two new devices, section 179 and bonus), the lease and build-out, and the non-clinical payroll. Across both: US$240,000 of December package and gift card sales — cash-method income when received (the accrual method's deferral modeled for next year). The SSTB analysis: the professional corporation is in the health field; the management company's income is management fees, retail, and non-medical services — treated as non-SSTB because she owns no part of the professional corporation (the look-through reaches only 50 percent common ownership), with the fee documented at fair market value for the fee-splitting rules. The med spa two blocks away, owned directly by a non-physician with a physician "on paper" and injectors paid per unit on 1099s, received a medical board inquiry and a state labor audit in the same year.

Official sources

HHS states: “HHS published a final Security Rule in February 2003. This Rule sets national standards for protecting the confidentiality, integrity, and availability of electronic protected health information.” — U.S. Department of Health and Human Services, HIPAA for Professionals, https://www.hhs.gov/hipaa/for-professionals/index.html

The IRS states: “An SSTB is a trade or business involving the performance of services in the fields of health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, investing and investment management, trading or dealing in certain assets, or any trade or business where the principal asset is the reputation or skill of one or more of its employees or owners.” — Internal Revenue Service, Section 199A qualified business income deduction FAQs, https://www.irs.gov/newsroom/tax-cuts-and-jobs-act-provision-11011-section-199a-qualified-business-income-deduction-faqs

Practitioner note

A medical spa's return can't be prepared until its structure is right: in corporate-practice states the non-physician owner holds a management company that serves a physician-owned practice for a fair-market fee, and that line decides whose return shows the injectables, whose shows the lasers, and which one is a specified service trade. Our med spa files count the injectables with the lot and usage records, book the manufacturers' reward reimbursements, book December's packages and gift cards as the cash-method income they are, and keep the injectors on payroll — because the medical board and the labor agency read the same schedule.

See also: For related guidance, see the dental practice entity guide; and browse every small business tax guide, by situation.

Next step

Fairlight Accounting is a cross-border accounting and tax practice with a U.S. Tax Desk and a Canadian Tax Desk. Our U.S. Tax Desk handles medical spa returns and structuring — corporate practice of medicine analysis and MSO arrangements, medical director agreements, injectables and retail inventory with lot and usage records, membership and package revenue timing, sales tax including cosmetic procedure taxes, practitioner classification, and SSTB analysis by revenue mix. See pricing or book a call.