Case Study 05 · Tax Architecture
Your 9% Corporate Rate Is Working. Your Extraction Strategy Is Not.
Manitoba · 2025 · Sole Practitioner · Medical Corporation · No Prior Structure
Manitoba · 2025 · Sole Practitioner · No Prior Structure
$429K
Physician Income
Active Business Income · Medical Corp
9%
SBD Corporate Rate
Manitoba · ITA s.125
~$136K
Annual Tax Saving
With Full Architecture in Place
The Situation
This physician has a medical corporation earning $429,000. The 9% corporate rate is working. The extraction strategy is not. Without architecture, every dollar of retained earnings extracted personally is taxed at Manitoba's top marginal rate of 50.4%. The corporation provides a tax deferral — but no mechanism to protect, compound, or transfer those savings. There is no HoldCo, no spousal income plan, no pension, and no estate foundation. CRA collects the other 41% the moment that money is touched. Over 20 years, the difference between structured and unstructured is over $4 million.
Critical Gaps
No Extraction Strategy
All retained earnings exit at 50.4% personal rate. The 9% corporate saving is surrendered entirely on withdrawal. No deferral engine exists.
No HoldCo
Without a holding company, surplus after-tax earnings have nowhere to compound at corporate rates. Every dollar is creditor-exposed.
Spouse Earning $0
The spouse qualifies for the TOSI excluded business exemption. A $60,000 salary — splitting income to a lower bracket and generating $10,800 RRSP room annually — is being left on the table.
No Pension or Estate Foundation
No IPP, no COLI, no estate plan. The estate faces an uncapped deemed disposition at death under ITA s.70(5) with no funded liability in place.
Tax Comparison — Current Structure vs. Fiscal Architecture Blueprint
| Area | Without Structure | With Architecture |
|---|---|---|
| Corporate Tax — Medical Corporation (ITA s.125 — 9% SBD) | $38,610 | $10,665 |
| Physician Personal Tax on Full Extraction (~50.4%) | ~$197,000 | ~$73,500 |
| Spouse Tax | $0 — no income | ~$15,200 |
| RRSP Sheltered — Physician & Spouse Combined | $0 | ~$43,290 |
| IPP Sheltered — Corporate Deduction (ITA s.147.2) | $0 | ~$45,000 |
| Retained Earnings Flowing to HoldCo (ITA s.112(1)) | $0 | ~$130,585 |
| Total Family Tax | ~$235,610 | ~$99,365 |
| Annual Tax Saving | — | ~$136,245 |
Red = current cost. Green = with architecture. Figures are estimates based on 2025 rates.
The Architecture Blueprint — 4 Core Levers
Individual Pension Plan
At age 46, IPP contributions of ~$45,000/year exceed RRSP limits by ~$12,500 annually. Fully deductible to the medical corporation. A past-service buyback generates a one-time deduction of $150,000 to $250,000. Assets are creditor-protected under Manitoba pension legislation.
ITA s.147.2 & s.8504
Spousal Employment
The spouse's administration background provides full TOSI exclusion under the excluded business test — minimum 20 hours/week in the practice. A $60,000 salary deducted by the corporation splits income to a lower marginal rate, generates $10,800 RRSP room annually, and accumulates CPP entitlements.
ITA s.18(1)(a) & s.120.4
HoldCo — Intercorporate Dividend Engine
After deductions — IPP, spouse salary, and physician draw — surplus retained earnings flow to a new HoldCo as a tax-free intercorporate dividend. Inside HoldCo, ~$130,585 compounds annually at corporate investment rates rather than personal rates, creating a permanent tax deferral engine.
ITA s.112(1) & s.125(5.1)
Corporate-Owned Life Insurance
A permanent life insurance policy owned by HoldCo serves as an exempt accumulation vehicle. Cash value growth falls outside the AAII calculation, protecting the SBD. On death, the full death benefit flows into HoldCo's Capital Dividend Account and is distributed to the spouse entirely tax-free.
ITA s.89(1) & s.83(2)
“Your 9% corporate rate is working. Your extraction strategy is not. Without architecture, CRA collects the other 41% the moment you touch that money. Over 20 years, the difference between structured and unstructured is over $4 million.”
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All Fiscal Architecture Blueprint Diagnostics are conducted under the supervision of Olutosin Oluwasanmi, Managing Counsel, Ellan Law Corporation — a member in good standing of the Law Society of Manitoba. This case study is illustrative and does not constitute legal or tax advice.