The corporation is ordinary; the room is regulated
Unlike the professional corporations that physicians, dentists and nurses use for their own practices, a medspa needs no college's Certificate of Authorization, no restriction to licensed shareholders, and no constraint on what its share classes can look like. That openness is why nurse-owned, esthetician-owned and investor-backed clinics all exist in Ontario. The regulatory weight sits elsewhere: botulinum toxin is a prescription drug, cosmetic injection is a controlled act, and the authority to perform it comes from people with the right registration working under proper orders, never from anything in the minute book.
A physician involved in the clinic usually keeps their medicine professional corporation entirely separate. The medspa corporation cannot be one, and does not need to be; it simply contracts with one.
The medical director is a supplier, so paper the supply
Most Ontario medspas retain a physician or nurse practitioner as medical director to issue the directives injectors work under, review charts and set protocols. In tax terms that is a service supplied to the clinic, and because it is oversight of a business rather than care delivered to a patient, it is generally taxable for HST. A director whose taxable billings pass $30,000 registers and charges 13 percent, which the clinic recovers as an input tax credit. The cost is compliance, not cash, but only if both sides invoice it properly.
The agreement should say precisely what the money buys. A flat monthly retainer for directives, chart review and availability is clean. A percentage of injectable revenue is common and workable, but it blurs the line between paying for oversight and splitting fees, and when CRA or a college reads the arrangement later, the written definition of who supplies what to whom is the document that decides the outcome. We build the accounting to match whatever counsel drafts: separate billing streams, HST clauses, and a fee basis the books can actually compute each month.
One clinic, four tax personalities
| Party | What they supply | Tax treatment |
|---|---|---|
| The clinic corporation | Cosmetic treatments and retail, to clients | Taxable at 13%; credits recovered on costs |
| Medical director, often via a professional corporation | Directives, oversight and chart review, to the clinic | Generally taxable once past $30,000 |
| Contractor nurse injector | Injection services, to the clinic | Taxable; registration once past $30,000 |
| Employee injector or esthetician | Their work, as employment | No HST; T4 payroll instead |
Every arrow in that table is an invoice or a pay run, and incorporation is the moment they all get defined at once. Clinics that grow first and paper later spend real money reconstructing who supplied what, usually with CRA already asking.
An operating clinic moving into a corporation has extra cargo. A tax-deferred rollover can carry the devices and goodwill across at cost, but the medspa-specific choreography is elsewhere: the medical director agreement is reassigned to the corporation, device financing moves only with the lender's consent, and every unredeemed package, membership credit and gift card becomes the corporation's obligation, rebilled and honoured under the new entity without a single client charged twice. We sequence those moves against the HST and payroll account openings so no filing period is orphaned.
Shares for the clinic you intend to build
Incorporate before the lease and the device loans are signed, for two familiar reasons: a claim arising in a treatment room should meet the corporation's assets rather than the owner's, and profit retained at Ontario's roughly 12.2 percent small-business rate is the cheapest capital a second treatment room will ever get. Then spend the extra hour on the share map. A separate class for a spouse, tested against the income-splitting rules before any dividend flows. Room for a future minority partner, because strong lead injectors get offered equity or get recruited away. A structure kept clean enough that the $1.25 million lifetime capital gains exemption remains available if a consolidator comes calling, since medspa roll-ups are active buyers in the GTA.
Our Incorporation engagement handles the Articles, the HST and payroll accounts, and the sequencing around the medical director agreement, then hands the share map to Tax Planning & Advisory to keep it fit for purpose as the clinic grows. Scope and fee are quoted in writing after a free 15-minute discovery call.
