The short answer: manage the practice like the asset it is
A dental practice is two things at once: a clinical business producing income this year, and an asset compounding toward a sale that may be the largest transaction of your life. Most accountants serve the first and ignore the second. The five jobs in the lede all serve both, because the same clean, department-level books that help you run the practice are what a purchaser's accountant, a bank's credit team and the CRA will each eventually read. Practices that keep score properly are simply worth more, and easier to defend, than practices that do not.
Growth is what forces the upgrade. A single-operatory practice with one dentist producing everything can survive on simple books. Add hygienists, an associate, more chairs and an expanded recall program, and the practice becomes a system of departments with different margins, different tax treatments and different risks. At that point the accounting either evolves into management information or the owner starts flying on instruments that read six months late. Growth does not make the practice harder to run so much as it makes late information more expensive, and every section below is a version of that one sentence applied to a different part of the practice.
The facts that change what your practice needs, name them before applying anything below:
- Whether you produce most of the dentistry yourself, or hygiene and associates now generate a large share of production.
- Whether you own, rent or want to own your premises, because the building belongs in its own corporation, not the DPC.
- How much profit stays in the corporation each year, because retained surplus is where dental tax planning lives or dies.
- Your family situation, since dentists can bring family in as non-voting shareholders, within tight tax limits.
- Your exit horizon, because the lifetime capital gains exemption is earned over years of keeping the corporation clean, not claimed at the last minute.
- Your appetite for debt, because dentistry is one of the most bankable professions in Canada and growth is usually financed.
One caution on benchmarks: the useful comparison is your practice against its own trailing months, not against industry averages of uncertain origin. A monthly pack that shows production by department, collections, overhead as a share of collections and cash, trended over the past year, will surface a slipping recall program or a drifting supply cost faster than any published ratio. The accountant's job is to make that pack arrive on time and mean something; your job is the thirty minutes it takes to read it.
Two structural notes before the detail. This page assumes you practise through a dentistry professional corporation; if you are still deciding, the threshold case, with honest numbers on who benefits, is at should a dentist incorporate in Ontario. And everything here is Ontario-specific, because both the College rules and the tax rates that drive the planning are provincial.
The DPC frame: College rules first, tax rules second
The dentistry professional corporation sets the boundaries every other decision lives inside. The corporation needs a certificate of authorization from the RCDSO, its name must follow the required dentistry professional corporation format, and its business is restricted to practising dentistry plus related or ancillary activities, which includes temporarily investing surplus funds. Voting shares belong to dentists only; family members, a spouse, children, parents, may hold non-voting shares, and a trust can hold shares for minor children. No holding company may ever appear on the register.
That last rule matters more for dentists than for most professionals, because dental practices generate the kind of surplus that would normally flow to a holdco. The workaround is structural: the DPC retains and invests surplus itself, while assets that do not belong in a professional corporation, above all the clinic real estate, sit in separate ordinary corporations that the College does not regulate. An ordinary corporation owning the building and leasing it to the DPC at market rent separates the property from practice risk and keeps ownership flexible, including for family.
Some practices add a service corporation: an ordinary company that owns equipment or employs non-clinical staff and charges the DPC for their use. Done well, with real services, market pricing and proper invoicing, it can serve risk separation and family-ownership goals; done as a paper exercise it fails audits and complicates financings. The unavoidable friction is HST, because most dental services are exempt, so the DPC cannot recover HST charged on intercorporate fees. Any service-corporation proposal that ignores that leak has not been costed honestly.
Changes to the corporation need the College's paperwork as much as the lawyer's. Adding a family shareholder, changing the name, amalgamating after an acquisition, each has a College dimension with its own timeline, and transactions have been delayed for weeks because the corporate step was done in the wrong order. The accountant, the lawyer and the College process should be sequenced together, which is a coordination job someone must explicitly own.
Keep the corporate file boring and current: College filings, provincial returns, a minute book that matches reality, resolutions behind every dividend. Buyers and banks read minute books, and gaps that cost nothing to prevent cost real money to repair inside a transaction. Incorporation still does not shield clinical liability, that is what insurance is for, but a clean corporate file protects the thing incorporation is actually for: the retained earnings and the eventual sale.
The operatory numbers: hygiene, associates, lab and supplies
Clinic reporting for a dental practice means one thing above all: production, collections and costs broken out by department and by provider, every month. Dentist production, hygiene production, associate production and any specialty streams behave differently, cost differently and grow differently, and a single revenue line hides all of it. The hygiene department in particular is often the practice's steadiest margin engine, and its economics, hours, recall effectiveness, production per hour against wages, deserve their own page in the monthly pack.
| Money line | Why it matters | What the books must show |
|---|---|---|
| Hygiene department | Recurring revenue and the practice's recall health | Hygiene production vs hygiene wages, by month, by provider |
| Associate dentistry | Growth capacity that only works at the right split | Production, adjustments and the split calculation, reconciled to the contract |
| Lab fees and supplies | The costs that move with production, not with time | Tracked as a percentage of the production that caused them |
| Equipment and leaseholds | Large, financed, and recovered through tax over years | An asset register tied to CCA classes and loan schedules |
| Insurance receivables | Real money between the chair and the bank | An aging report someone reviews and works monthly |
Associate arrangements deserve accounting attention before they deserve legal attention. Splits are typically a percentage of collections or production, usually net of lab fees, and every dispute we have seen traces to books that could not compute the split cleanly. The contract, the practice-management software and the accounting records must agree on definitions, production versus collections, which adjustments count, when lab is netted, or the relationship will eventually produce a fight nobody wanted.
Receivables are a department of their own. Insurance-assigned claims, patient balances and payment plans are real money parked between the chair and the bank, and a practice that stops working its aging report is quietly financing its patients. The monthly pack should show receivables by age, write-offs as a deliberate policy rather than an accumulation, and collections as a percentage of production, because a growing gap between produced and collected is the earliest honest warning a practice gets.
The day-sheet is also the practice's first fraud control. Dental offices run high transaction volumes with adjustments, refunds and cash components, and the standard protection is boring separation: the person who adjusts accounts is not the person who reconciles deposits, day-sheets tie to bank deposits daily, and someone outside the front desk reviews adjustment reports monthly. Most practice fraud that reaches us was possible because the books were reconciled by the same hands that kept them, which is a design flaw, not a personnel flaw.
HST in a dental practice runs on an awkward split. Most dental services are exempt, so the practice charges no HST and recovers none of the HST it pays, which makes HST a permanent hidden cost on supplies, lab work, rent and equipment. But not everything is exempt: purely cosmetic services are taxable, and a practice whose taxable streams pass the $30,000 small-supplier threshold must register and charge HST on those streams while still recovering nothing on the exempt side. The books have to classify revenue correctly stream by stream, because errors here compound in both directions.
Reconciling the practice-management software to the accounting system monthly is the habit that makes all of this real. Production reports, adjustments, insurance assignments and patient balances should tie to the books, with the differences explained rather than plugged. This is the standing core of our dentist accounting work, and it is what turns the monthly package from a compliance artifact into the practice's instrument panel.
Compensation, family and what the DPC lets you defer
The compensation logic for a dentist starts with one number: the profit the practice earns beyond what your household spends. That surplus, left in the DPC, is taxed at Ontario's roughly 12.2 percent combined small-business rate on the first $500,000 of active profit instead of your top personal rate, and the difference compounds for you until you draw it. Dentists run some of the largest professional surpluses in healthcare, which is why the deferral case is usually stronger for a dentist than for almost any other professional.
The salary-versus-dividends choice sits on top of that. Salary builds RRSP room and CPP entitlement and supports an individual pension plan later; dividends skip payroll and CPP but build no room and arrive with no tax withheld, so instalments become your problem to manage. Most established practice owners blend the two, and the blend should be recalculated annually against your cash need, your registered-account room and the corporation's position relative to the small-business limit. The full comparison lives at salary vs dividends for incorporated dentists.
Family planning inside a DPC is legal and limited. A spouse or adult child can hold non-voting shares, but the tax on split income rules tax most family dividends at the top personal rate, and the ownership-based exception is unavailable for professional corporations. What works: reasonable salaries for real work, family who genuinely average twenty or more hours a week in the practice, and spousal dividends once you are 65. A family trust for minor children can hold DPC shares, which is mostly an estate-planning door rather than an income-splitting one while TOSI stands.
For dentists in their forties and beyond, the individual pension plan deserves a proper look. An IPP is a defined-benefit plan the corporation funds and deducts for you, it typically allows larger contributions than an RRSP at those ages, past service can often be funded, and the assets carry pension-level creditor protection. It requires T4 salary and comes with actuarial and administration costs, so it is a calculation rather than a default, but for a high-earning dentist with a long runway it is one of the few genuinely underused tools.
Retained surplus then needs its own policy, because a large corporate portfolio has side effects. Corporate investment income is taxed at roughly half, with part refundable only when dividends are paid, and once investment income passes $50,000 a year the federal small-business limit starts shrinking, disappearing at $150,000; Ontario did not mirror the clawback, which softens it for Ontario dentists. More importantly for a dentist, portfolio assets sitting in the DPC can spoil the sale-readiness tests covered below, so the surplus policy and the exit plan must be written together.
Equipment, build-outs and the financing behind the next stage
Dental growth is capital-intensive, and the tax system recovers that capital on its own schedule. Equipment, chairs, imaging, sterilization, is deducted over years through capital cost allowance rather than expensed when bought; leasehold improvements depreciate on their own schedule tied to the lease; software and computers move faster; and purchased goodwill sits in its own slow class. First-year acceleration rules have changed several times in recent years, so we time large purchases around the rules actually in force for the year rather than around a rule of thumb someone remembers.
The buy-versus-lease question for equipment is a financing question wearing tax clothing. Ownership gives CCA and an asset on the balance sheet with debt beside it; leasing gives deductible payments and flexibility at the cost of total price. Neither is generically right, and the honest comparison is after-tax cash flow over the equipment's life, run with your lender terms and your marginal rates, which is a one-hour analysis that regularly changes six-figure decisions.
Build-outs carry two costs owners routinely under-budget. The first is HST: because most dental revenue is exempt, the HST paid on construction, millwork and equipment is largely unrecoverable, so the real project cost is the quote plus tax that never comes back. The second is the ramp: a new operatory or location produces below capacity for months while hiring, recall and referral patterns catch up, and the working capital to survive that ramp belongs in the financing request from day one, not in a panicked line-of-credit call later. Landlord inducements, meanwhile, are not free money; they have their own tax treatment and belong in the model.
Dentistry is exceptionally bankable, and that is a tool to use deliberately. Lenders finance build-outs, equipment and full practice acquisitions against practice cash flow because the sector's loss history is excellent, and they compete hard for good files. What separates a fast approval at fine terms from a grinding one is the package: statements that reconcile, a projection built on chairs, hours and realistic production per provider, and a structure where the right entity borrows and the guarantees are understood before signing. Walla Assaf's background in banking and corporate finance is exactly the experience this step wants on your side of the table.
A strong associate eventually raises the buy-in question, and it is cheaper to answer early than late. Selling a minority stake, moving to a cost-sharing arrangement, or building toward a full transition each carries different tax, valuation and College-structure consequences, and the worst version is a handshake understanding that hardens into an expectation with no paper behind it. If an associate is part of your five-year plan, the structure conversation belongs in this year's agenda, while every option is still open and nobody is negotiating under deadline.
Acquisitions deserve their own discipline, whether you are buying a first practice or adding a second location. The deal turns on verified cash flow, the split between asset and share purchase, what happens to staff and associates, and a price the financed cash flow can actually service. We walk through the whole financing side, down payments, amortizations, what lenders test, at how do you finance the purchase of a dental practice.
Building toward the sale, from years away
The sale is where dental tax planning pays off or does not, and the work is done years in advance. A share sale of a qualifying small business corporation lets each qualifying seller shelter up to $1.25 million of gain under the lifetime capital gains exemption, but the corporation must pass asset tests: substantially all assets in active practice use at the sale, and a majority throughout the twenty-four months before it. A DPC that spent a decade accumulating a portfolio can fail those tests exactly when they matter, which is why purification, moving surplus out on a planned, tax-sensible schedule, is a standing agenda item, not a pre-closing scramble.
Buyers and sellers also pull in opposite directions on deal structure. Sellers prefer selling shares, for the exemption; buyers often prefer buying assets, for the depreciation and the clean slate, and the price usually moves to reflect who compromises. A seller whose corporation is clean, whose books are department-level and whose associate and staff arrangements are properly papered simply has more negotiating room, because nothing in the file forces a discount. That is the quiet, cumulative return on doing the first five sections properly.
Know what a buyer's team will read, because that is the checklist you are really maintaining. Diligence starts with several years of financial statements and tax filings that reconcile to the practice-management software, then moves to the associate and staff contracts, the lease and its assignment terms, the equipment register against the loans on it, and the corporate minute book. Every item that arrives clean keeps the price where the letter of intent put it; every gap becomes a holdback, a price adjustment or a delay. Sale-year personal tax needs its own planning pass as well, since a large exempt gain can still interact with the alternative minimum tax, and the time to model that is before the closing date is chosen.
The same horizon should include the estate questions dentists prefer to defer: what happens to the DPC if you die or are disabled mid-career, who can legally hold the shares and for how long, whether insurance funds the gap, and how a corporation full of retained earnings avoids double tax at death. These are solvable problems with time and expensive ones without it; our estate planning work runs them alongside the corporate file so the will, the share structure and the tax plan agree.
What should you take from all this? A growing dental practice has outgrown year-end-only accounting, and the fix is one team running the books, the payroll, the tax and the decisions together, which for our dental clients is the Ongoing Financial Partnership, with defined-scope projects for acquisitions, structures and sales. Dentists looking for a CPA for incorporated healthcare professionals in Ontario should test any firm the same way: ask to see department-level reporting they already produce for a practice like yours. The conversation starts with a free 15-minute discovery call from our Mississauga office, and the fee is always a written scope, agreed before the work.
