Associate Dentist Tax Planning
A licensed Ontario CPA on the position most associate dentists have never had assessed. Your agreement says independent contractor. That wording is not what decides it, and in dentistry the facts sit closer to the line than in almost any other profession. Here is what actually determines your position, and what it costs to get it wrong.
Quick Answer
Associate dentist tax planning turns on one question that is usually never asked: are you actually an independent contractor? It is a question of fact, not of what the associate agreement calls you, and dentistry sits close to the line because the practice typically owns the chair, the operatory, the materials, the staff, the software and the patient list. Get it wrong and the principal dentist faces unremitted source deductions while your deductions shrink to the employee list. If you incorporate, the same facts create personal services business exposure, which is worse than either. Then there are the parts nobody warns you about: instalments, and the fact that your exempt billings mean the HST you pay is not coming back.
Your Agreement Says Contractor. That Is Not What Decides It.
Almost every associate agreement in Ontario describes the associate as an independent contractor. The dentist signs it, the practice files it, and both sides proceed on the basis that the question has been settled. It has not been settled. It has been labelled. Worker classification is determined on the facts of the relationship, not on the wording of the document, and a contract that describes an arrangement inaccurately does not change what the arrangement is. The CRA looks at control over how and when the work is done, ownership of tools and equipment, the chance of profit and the risk of loss, and how integrated the worker is into the business. Now apply those to dentistry honestly. The practice owns the chair. The practice owns the operatory, the sterilization, the imaging, the materials, the practice management software. The staff are the practice's staff. The patients are, in most arrangements, the practice's patients. The schedule is generally built by the practice. On the tools factor and the integration factor, an associate dentist looks considerably more like an employee than a plumber with a van does, and that is not a criticism of anyone, it is just the shape of the work. Which is precisely why this deserves an honest look rather than a signature. See our accounting for dentists services.
Where the Facts Actually Point
No single factor decides it. The picture as a whole does.
| Factor | Points to Contractor | Points to Employee |
|---|---|---|
| Practices worked at | More than one, genuinely | One, exclusively. |
| Schedule | You decide when you work | The practice builds it and you work it. |
| Clinical method | Entirely your own call | Protocols, materials and systems set by the practice. |
| Instruments | You own your loupes, handpieces, kit | Everything is the practice's. |
| Operatory and staff | You engage and pay your own assistant | The practice provides both. |
| Patients | You bring and keep your own | The practice's list, assigned to you. |
| Financial risk | Real downside. Lab remakes, bad debt, no floor | A percentage with no exposure to loss. |
| Substitution | You could arrange coverage | They engaged you personally. |
Reclassification lands on both sides of the arrangement. If the CRA determines the relationship was employment, the principal dentist becomes liable for the unremitted source deductions plus the employer's share of CPP and EI, generally with interest and penalties, on every associate treated the same way. Your own position gets worse at the same time: the deductions available to an employee are far narrower than those available to a self-employed associate. And please note where this usually starts. It is rarely an associate who gets reviewed. It is the practice, and when the principal's source deduction position is examined, everyone treated as a contractor is looked at together. See our healthcare CRA audits page.
Incorporating Does Not Solve It. It Changes the Exposure.
Here is the trap, and it is a real one. An associate hears that incorporating is what successful dentists do, incorporates, and continues working exactly as before: one practice, their schedule, their chairs, their staff, their patients. What has changed is not the risk but its character. Without a corporation, the exposure is reclassification to employee. With a corporation providing the services of one dentist to one practice, the exposure becomes personal services business treatment, and that is worse than either of the alternatives. A personal services business is denied the small business deduction, taxed at a substantially higher rate, and has its deductions heavily restricted compared to an ordinary corporation. The structure adopted to reduce tax ends up costing more than not incorporating at all. Read the fact pattern back without the profession attached: a corporation that exists to provide the services of one person to one client, where that person would look like an employee of the client but for the corporation. That is the textbook description, and it fits a single-practice incorporated associate uncomfortably well. The general position on all of this is set out in our will I pay less taxes if I incorporate guide, and the mechanics in our incorporation for dentists page. Please assess the position before incorporating rather than after.
Three Routes, Three Different Exposures
The same associate, the same practice, three structures. What changes is not the work. It is what goes wrong when the facts are examined.
| How You Operate | What Is at Risk | If the Facts Say Employee |
|---|---|---|
| Self-employed associate, one practice | Reclassification to employee | Principal owes source deductions and employer CPP and EI. Your deductions shrink to the employee list. |
| Self-employed associate, several practices | Considerably less | Multiple genuine engagements is the strongest fact pointing away from employment. |
| Incorporated, one practice only | Personal services business treatment | Small business deduction denied, substantially higher rate, deductions heavily restricted. Worse than either alternative. |
| Incorporated, several practices genuinely | Much reduced, not eliminated | The analysis is on the whole picture, not a count of practices. |
| Employed associate on payroll | Nothing to reclassify | Withholding handled, no instalment surprise, but the narrowest deductions of the three. |
The Two Bills Nobody Warned You About
This is the most common first call we get from associate dentists, and it has nothing to do with classification.
Nothing is withheld from your associate payments. In your first year that feels like a raise, because compared to a salaried job the money arriving looks larger. It is not larger. It is untaxed. The bill arrives after year end, in full, and it is the first time most associates see what their actual tax on that income looks like. Then the second year arrives and does something worse: you pay the balance owing for the prior year and, once your tax has reached the threshold, you begin paying instalments for the current year, in the same period. Two obligations, same months. Your income did not change. The timing did, and nobody mentioned it when you signed. Interest applies where instalments are required and missed, which turns an avoidable cash flow problem into an expensive one. The practical answer is not complicated: set the money aside in a separate account from the first payment and treat it as not yours, because it is not.
Your HST Is Not Coming Back
Two separate points here, and associates routinely miss both. The first: because patient treatment is generally an exempt supply rather than a zero-rated one, there are no input tax credits on your inputs. The HST you pay on your loupes, your courses, your professional fees and your instruments is a real cost that stays with you, and your deductible expense is the tax-inclusive amount rather than the pre-tax figure. Books built as though that tax were recoverable understate your expenses and misstate your position. The second point is sharper and it surprises people. The exemption attaches to the supply of the health service to the patient. It does not automatically attach to every payment that moves through a dental office. Depending on how your arrangement is actually structured, what you supply to the practice may not be patient treatment at all, and the character of that supply is a separate question from whether dentistry is exempt. Add to that the cosmetic versus therapeutic distinction, where elective work does not sit in the same place as restorative treatment, and the position is worth reviewing rather than assuming. See our HST exempt healthcare services in Ontario.
What You Can Deduct, and What You Are Paid On
The expense list for a self-employed associate is much the same as for any practitioner earning professional income, and our physician expense deductions guide covers the mechanics in full, including the vehicle limits and the reimbursement point. The dental specifics worth flagging separately are these.
| Item | Position |
|---|---|
| RCDSO fees and professional dues | Deductible. Where incorporated, please route them through the corporation rather than a personal account. |
| Malpractice and liability insurance | Deductible as a cost of practising. |
| Continuing education and courses | Deductible where they maintain skills for your practice. Keep the program alongside the receipt. |
| Loupes, handpieces, your own instruments | Generally capitalized and deducted over time through CCA rather than expensed in full. |
| Scrubs and protective equipment | Deductible. Ordinary clothing worn to work is not. |
| Dental school loan interest | Generally a personal non-refundable credit under a government student loan program, not a business deduction. |
| HST paid on the above | Generally not recoverable against exempt supplies. The expense is the tax-inclusive amount. |
The other half of the arithmetic is what you are paid on, and associates check this far less often than they should. You are paid a percentage of something. Please make sure you know precisely what that something is: billings or collections, before or after lab fees, who absorbs a remake, how write-offs and adjustments flow through to your number. These are not contract technicalities, they are your income, and being able to reconcile your payment to the practice's actual production is basic. Our medical clinic accounting page covers how these arrangements are built.
The RRSP point that catches incorporated associates. You have no employer pension behind you, which makes RRSP room worth more attention than it gets. If you incorporate and pay yourself in dividends rather than salary, please note that dividends do not create RRSP room. Salary does, and it also attracts payroll costs. Neither is universally right, but for an associate with no other plan the room question deserves to be part of the decision rather than discovered afterwards. It is also a decision to make before your year end. See our tax planning.
What Actually Reduces the Risk
None of these is a switch, and none helps if the underlying reality does not match.
- More than one practice, genuinely. The strongest fact pointing away from both reclassification and personal services business treatment. Two practices where one is nearly everything is a different case.
- Real control over your own schedule. Not in the agreement. In what actually happens week to week.
- Your own instruments where practical. Loupes and handpieces you own move the tools factor, even though the operatory never will.
- Genuine financial risk. Exposure to lab remakes, bad debt and no guaranteed floor is what a contractor actually carries.
- The ability to arrange coverage. If only you can do the work, they engaged you, not your business.
- An honest assessment before incorporating. The cheapest possible time to look at this is before the structure exists.
Case Study: The Corporation That Made It Worse
An associate had worked at the same practice for four years under an agreement describing her as an independent contractor. She was told incorporating was the obvious next step, so she incorporated, and nothing else about her working life changed. Same practice, only that practice. Their schedule, built by their front desk. Their chairs, their assistants, their materials, their patients. Her corporation invoiced the practice each month and that was the entire business. She came to us assuming the question was salary or dividends. The question was actually whether her corporation was a personal services business, because the fact pattern was close to the textbook description, and if it was, the small business deduction she had incorporated to access would be denied and her deductions restricted. We set out honestly where the risk sat, worked through what would have to change for the structure to earn its keep, and mapped the position on the years already filed. The figures here are illustrative of the work we do, not a specific client file. Accounting for Dentists →
Associate Dentists, Assessed Honestly
We tell you where your classification actually sits, whether incorporating helps or hurts, and what your instalments will be before they arrive. At flat-fee pricing including HST.
Classification Review
Contractor or employee, and personal services business risk if you incorporate. Assessed on your facts, before the structure exists.
Associate Tax & Instalments
Your return, your deductions, and the instalment schedule set out before the second year arrives with two bills at once.
Incorporation, If It Helps
Where the position supports it, we incorporate you and run the corporation. Where it does not, we say so.
Frequently Asked Questions: Associate Dentist Tax Planning
The Agreement Labelled It. It Did Not Settle It.
Gondaliya CPA assesses where your associate position actually sits, whether incorporating helps or hurts, and what your instalments will be before they arrive. Flat fee, including HST. 1300+ five-star reviews.