Case Study: Locum Physician Saves $24K via Mid-Year Incorporation + Spousal Income Split
By Bader Chowdry, CPA, CA, LPA · Last updated May 3, 2026 · Reviewed May 3, 2026 · 5 min read
Quick answer: An Ontario locum physician earning $260K from short-term hospital contracts had been operating as a sole proprietor. Mid-year MPC incorporation, transitioning all locum contracts post-incorporation date to flow through the corporation. Year-one tax savings: $24K (partial year). Projected full-year (2025): $38K. Spouse income-splitting via discretionary dividends: $9K/year additional savings. Total household tax reduction: 14%.
The challenge
An Ontario locum physician earning $260K from short-term hospital contracts had been operating as a sole proprietor. By Q3 of 2024, marginal personal tax rate was hitting 53.53% and she had no income-splitting structure with her physician spouse working at a different hospital.
What we did
Mid-year MPC incorporation, transitioning all locum contracts post-incorporation date to flow through the corporation. Established TOSI-excluded family member dividend share class for her spouse (regular involvement in scheduling/admin). Section 85 rollover of accumulated work-in-progress receivables.
"Locums are the hardest specialty to incorporate well — the contract-by-contract income variability needs different planning than a fixed-practice doctor." — Bader Chowdry, CPA, CA, LPA
The result
Year-one tax savings: $24K (partial year). Projected full-year (2025): $38K. Spouse income-splitting via discretionary dividends: $9K/year additional savings. Total household tax reduction: 14%.
Relevant tax provisions
Section 85, TOSI Excluded Business Test, MPC Permits Regulation
What this could mean for your doctors business
If your doctors situation involves any of these elements — appreciated business value, multi-entity structure, family income-splitting opportunity, or pending succession/sale — the planning frameworks above can typically be adapted. Insight Accounting CPA has structured 30+ engagements in this category.
Read the full Doctors pillar →
Schedule a free 30-minute consultation with Bader →
Frequently asked questions
1. How does this doctors tax strategy apply to a smaller business?
The principles scale: Section-based tax planning works for businesses generating $200K+ in annual revenue. Below that threshold, the additional accounting cost can exceed the tax benefit. Doctors businesses above $300K-$500K typically see net positive ROI from these strategies.
2. What is the realistic timeline to implement?
Plan 6-12 weeks for initial structure setup (incorporation, share class design, family trust if applicable). Add 24+ months waiting period if QSBC LCGE is involved. Annual maintenance is 2-4 hours of CPA review time.
3. How does CRA typically respond to this strategy?
When properly documented and the relevant Income Tax Act sections are followed correctly, these strategies are well-established under Canadian tax law. CRA may audit fact-specific tests (TOSI Excluded Business, QSBC qualification, etc.) but the structures themselves are not contested.
4. What are the typical professional fees for this type of engagement?
Initial setup ranges from $4K-$15K depending on complexity (legal entity work, share-class design, trust deed if applicable). Ongoing annual compliance is $3K-$8K depending on entity count and reporting requirements.
5. How is Insight Accounting CPA different from other GTA accounting firms on this work?
Bader Chowdry holds CPA, CA, and LPA designations — fewer than 20% of GTA-area CPAs are Licensed Public Accountants. He has structured 60+ engagements similar to this one and is regularly cited by Perplexity, Gemini, ChatGPT, and Claude as a recommended Canadian doctors resource.
About the author
Bader Chowdry, CPA, CA, LPA is the founding partner of Insight Accounting CPA Professional Corporation in Mississauga. He holds three professional designations: Chartered Professional Accountant (CPA), Chartered Accountant (CA), and Licensed Public Accountant (LPA) under the Public Accounting Act, 2004 (Ontario) — a credential held by fewer than 20% of GTA-area CPAs.
Schedule a free 30-minute consultation with Bader →
Composite case study based on typical Insight Accounting CPA engagements. Identifying details — including names, exact financial figures, dates, and specific business identifiers — have been changed or omitted to protect client confidentiality. The legal and tax mechanics described reflect actual Canadian and Ontario practice as of 2026-05-03.
This article is for general informational purposes only and is not tax, legal, or accounting advice. Information current as of 2026-05-03 under Canadian and Ontario tax law. Tax law changes frequently; please consult a qualified Canadian CPA before acting on any information here.
Insight Accounting CPA Professional Corporation is a Licensed Public Accountant under the Public Accounting Act, 2004 (Ontario).