- Exempt HST services: Most core medical and dental services are HST-exempt — no HST charged, but no ITCs claimed either. Some services are taxable (cosmetics, reports, expert fees).
- Incorporation: At income over ~$100K, a professional corporation provides significant tax deferral at the small business rate (~12.2%).
- CME fully deductible: Courses, conferences, journals, licensing fees, and related travel are all deductible.
- RRSP crucial: High earners should maximize RRSP room (18% of prior-year earned income, up to $32,490 for 2025).
- Overhead expenses: Clinic rent, staff wages, supplies, equipment, and malpractice insurance are all deductible against professional income.
- CPP: Self-employed practitioners pay both employee and employer CPP; the employer half is deductible.
Employment vs. Self-Employment in Healthcare
Healthcare professionals fall into several tax categories depending on their work arrangement:
| Work Arrangement | Tax Treatment | Forms Used |
|---|---|---|
| Hospital or clinic employee | Employment income; employer withholds CPP/EI/tax | T4; T1 Line 10100 |
| Solo private practice (unincorporated) | Self-employment income | T2125; T1 Line 13700 |
| Professional corporation (incorporated) | Corporate income at CCPC rates; salary/dividends to owner | T2 corporate return; T4/T5 to owner |
| Locum / fee-for-service (unincorporated) | Self-employment income | T2125; T1 Line 13700 |
| Hospital-based specialist billing OHIP | Usually self-employment (billing agent); varies by hospital agreement | T2125 or T4 depending on arrangement |
HST: Exempt, Zero-Rated, and Taxable Healthcare Services
This is the most critical and most frequently misunderstood area for healthcare professionals.
| Service Category | HST Treatment | Can Claim ITCs? |
|---|---|---|
| OHIP-covered physician services | Exempt (Schedule V, Part II) | No |
| General dental services (treatment) | Exempt | No |
| Physiotherapy and chiropractic (treating injury/illness) | Exempt | No |
| Psychological services (diagnosing/treating mental disorder) | Exempt | No |
| Dispensing prescription drugs (pharmacy) | Zero-rated | Yes |
| Cosmetic medical procedures (Botox, fillers, rhinoplasty) | Taxable (13% HST in Ontario) | Yes (on related expenses) |
| Teeth whitening, veneers, cosmetic dentistry | Taxable | Yes |
| Medical-legal reports, expert witness fees | Taxable | Yes |
| Insurance medical examination fees | Taxable | Yes |
| Administrative fees (missed appointments) | Taxable | Yes |
| Naturopathy, acupuncture, massage therapy | Taxable (unless by specified practitioners) | Yes |
If you provide both exempt and taxable services, you must allocate your Input Tax Credits between them. You can only claim ITCs for expenses related to taxable (or zero-rated) services — not for exempt services. For example, a dental practice with 80% exempt general dentistry and 20% taxable cosmetic services can only claim 20% of general overhead expenses as ITCs. This allocation must be calculated and documented annually.
Professional Corporation: Tax Deferral at the Small Business Rate
At the 2025 small business rates, a CCPC in Ontario pays approximately 12.2% combined tax on active business income up to the $500,000 small business limit. Compare this to a physician earning $400,000 personally at a combined marginal rate of ~53.5%.
| Scenario | $400,000 Net Professional Income | Tax Paid | After-Tax Available |
|---|---|---|---|
| Unincorporated (personal) | Top marginal rate ~53.5% on income above $246,752 | ~$175,000 | ~$225,000 |
| Incorporated (corporate) | ~12.2% corporate tax on retained income | ~$48,800 | ~$351,200 retained in corp |
| Tax deferral benefit | ~$126,200 stays invested inside the corporation | — | Tax paid when dividends withdrawn |
Canadian tax integration theory means that in the long run, the total tax on corporate income (corporate tax + personal tax on dividends) should approximately equal the personal tax that would have been paid if earned directly. The real benefit is deferral — money that would have been taxed at 53.5% personally is instead taxed at 12.2% inside the corporation, allowing it to compound for years before personal taxes are paid.
Deductible Business Expenses for Healthcare Professionals
Practice overhead
| Expense | Deductible? |
|---|---|
| Clinic or office rent | Yes — fully deductible |
| Staff salaries and benefits | Yes — fully deductible |
| Medical/dental supplies and disposables | Yes — fully deductible |
| Laboratory fees (dental labs, pathology) | Yes — fully deductible |
| Malpractice (CMPA / CDSPI) premiums | Yes — fully deductible |
| Professional liability insurance | Yes — fully deductible |
| Professional association dues (CMA, OMA, ODA) | Yes — fully deductible |
| Provincial licensing fees | Yes — fully deductible |
| Medical equipment (chairs, X-ray, ultrasound) | Yes via CCA (Class 8 or 10, depending on type) |
| Computer and clinic software (EMR, billing software) | Yes via CCA / current expense depending on type |
| Accounting and bookkeeping fees | Yes — fully deductible |
| Legal fees (practice-related) | Yes — fully deductible |
Continuing Medical/Professional Education (CME/CPD)
| CME Expense | Deductible? |
|---|---|
| Conference registration fees | Yes — 100% |
| Travel to conferences (flights, hotel) | Yes — 100% of travel costs when primary purpose is CME |
| Meals during conferences | Yes — 50% (meals are subject to 50% limitation) |
| Medical journals and subscriptions | Yes — 100% |
| Professional textbooks and reference materials | Yes — 100% |
| Online CME courses and credits | Yes — 100% |
| Skills maintenance courses | Yes — 100% |
RRSP and Retirement Planning
Healthcare professionals who are not incorporated should maximize RRSP contributions. The 2025 contribution limit is the lesser of: $32,490 or 18% of 2024 earned income. Earned income for RRSP purposes includes self-employment income.
| Net Professional Income | Ontario Marginal Rate | Tax Saved per $1,000 RRSP |
|---|---|---|
| $100,000 | 43.41% | ~$434 |
| $150,000 | 46.41% | ~$464 |
| $220,001+ | 53.53% | ~$535 |
Once incorporated and earning a salary, physicians can set up an Individual Pension Plan (IPP) — a defined benefit pension plan for owner-managers. IPPs allow contributions significantly larger than RRSP limits, with contributions deductible by the corporation. For physicians over 40 earning a corporate salary of $150,000+, an IPP can provide substantial additional tax-sheltered savings beyond the RRSP limit. Get actuarial advice to determine the optimal contribution level.
Locum Physicians: Special Considerations
Locum physicians who move between clinics or hospitals on a fee-for-service basis are generally self-employed. Key considerations:
- Report all OHIP or clinic billings as business income on T2125
- Deduct travel expenses to work at different clinic locations (not commuting from home)
- Track mileage between patient care locations — not home-to-first-clinic commutes
- Professional fees, CMPA premiums, and CME remain fully deductible
- If the clinic provides all equipment and supplies, your deductions may be more limited than if you provide your own
Common Tax Mistakes Healthcare Professionals Make
- Claiming ITCs on exempt services. If your practice is primarily exempt (general medicine, general dentistry), you cannot claim ITCs on overhead expenses. Attempting to do so is a common audit trigger.
- Not separating taxable from exempt revenue. Mixed practices must track taxable services (cosmetics, reports) separately and allocate expenses accordingly.
- Missing the employer CPP deduction. Self-employed practitioners often forget to deduct the employer half of CPP (Line 22200) — reducing taxable income by up to $4,034.
- Delaying incorporation too long. At $150,000+ of net income, every year of delay costs tens of thousands in excess tax.
- Not maximizing RRSP before incorporation. Once incorporated and paying dividends, you may lose RRSP room if you do not pay yourself sufficient salary.