Hearing clinic tax services: filing a three-tax-status business as one return

The T2 is straightforward; the GST34 is where the work is

Corporate income tax on a hearing clinic follows the same small business deduction and active-income rules as any incorporated professional practice. The complexity sits almost entirely in GST/HST. Assessments and diagnostic services are exempt, hearing aids supplied on prescription are zero-rated, and batteries, domes, and accessories are taxable. So every filing period requires the clinic to know exactly which invoices belong in which bucket. It also means applying a consistent, documented method for splitting the costs that serve all three — rent, reception wages, and the booth itself among them. Filing frequency also matters more here than in a pure retail business. A clinic near the annual filer threshold with a large exempt-services component may qualify to file GST/HST less often than a comparably sized retailer. That changes how often the apportionment calculation needs to be redone and how much cash sits in trust between filings.

Year-end inventory of hearing aid stock is valued at the lower of cost and fair value for tax purposes. That stock includes units purchased but not yet fitted, plus demo units held for trial. It is the same rule that applies to any retailer's shelf stock. We reconcile that count against the serialized inventory ledger before the T2 is prepared. A mismatch between the physical count and the books usually means a trial-return or a warranty exchange was never closed out in the system.

Input tax credits follow the revenue, not the expense category

Costs tied directly to dispensing — the hearing aids themselves, batteries, retail supplies — generate full ITCs. That side of the business is commercial activity, even though the sale is zero-rated. Costs tied directly to assessments generate none, because exempt activity does not carry ITCs regardless of how ordinary the expense looks on the invoice. Shared costs get apportioned on a method the clinic applies consistently period over period, commonly by revenue share between the exempt and commercial sides. We document that method once, so it survives a review rather than being reinvented at every filing.

Capital cost allowance on an audiometric setup

A clinic's fixed asset base is concentrated and expensive. It typically includes a sound-treated audiometric booth, an audiometer, tympanometer, and real-ear measurement system, plus fitting and repair-bench tools. We capitalize each at its full landed cost, including freight, duty, and the exchange rate on the payment date where the vendor bills in USD. We then claim CCA under the appropriate class each year. Demo and loaner hearing aids sit in a different category from this fixed equipment. They are inventory held for trial use, not depreciable assets. We keep that line drawn clearly, so the balance sheet reflects what each asset actually is.

The professional corporation, and who can actually own it

Where the clinic is owned by a CASLPO-registered audiologist, income can be earned through a professional corporation. That income is taxed at the small business rate on active business income up to the usual limit. Salary or dividends are then drawn out to the audiologist personally. A hearing instrument specialist may own and operate the dispensing business without an audiologist as a principal. In that case, ownership generally runs through an ordinary business corporation rather than a health profession corporation. That is because CASLPO's professional-corporation rules apply to its own registrants. We confirm which structure actually applies to a given clinic before assuming the professional corporation route is available. Getting this wrong at setup is expensive to unwind later.

ADP funding and manufacturer rebates on the return

ADP contributions received on a client's behalf are part of the taxable revenue for income tax purposes. That is true even though the funding source is a government program rather than the patient. ADP funding is not a grant to the clinic and is not treated as tax-free assistance. Manufacturer volume rebates reduce the cost of goods sold for the units they relate to, rather than sitting as other income. That keeps gross margin reporting accurate and avoids overstating revenue on the T2. We reconcile both against the bookkeeping records before filing, so the return matches what actually happened in the clinic's ledgers. For an audiologist with a US-trained background, see our cross-border tax page for hearing clinics.