What Are the Tax Advantages of Incorporating as a Family Physician in Alberta?

Incorporating as a family physician in Alberta through a Medical Professional Corporation (MPC) can reduce the combined corporate tax rate on active practice income to 11%. This is lower than personal marginal rates, but incorporation is a structural decision with trade-offs that vary by physician.

What Is a Medical Professional Corporation?

A Medical Professional Corporation is a corporate structure that allows Alberta physicians to run their medical practice through a separate legal entity. Under Alberta’s Health Professions Act and the Professional Corporation Guidelines issued by the College of Physicians and Surgeons of Alberta, physicians can incorporate their practice if they meet the required conditions. The corporation then earns the practice income, pays corporate tax on it, and the physician gets paid through salary, dividends, or a combination of both.

Approximately 96,000 of Canada’s physicians have set up a professional corporation to manage expenses and build retirement savings. This is particularly relevant because most physicians do not have access to employer pensions, paid leave, or employment benefits. A professional corporation gives you a way to build long-term savings in a structured tax environment, rather than relying on personal savings alone.

How the Combined 11% Corporate Tax Rate Works

The core tax advantage of an MPC is access to the small business deduction (SBD). The SBD reduces the federal corporate net tax rate to 9% for Canadian-controlled private corporations (CCPCs). Alberta then adds a provincial small business rate of just 2%. The combined result is an 11% corporate tax rate on active business income up to $500,000.

By comparison, an unincorporated family physician reports all practice income on a personal tax return. Alberta’s 2026 personal income tax is structured across six brackets, ranging from 8% on the first $61,200 of taxable income up to 15% on income above $370,220, with four intermediate brackets of 10%, 12%, 13%, and 14% applying to income in between. Federal personal income tax applies on top of these rates. The gap between these personal rates and the 11% combined corporate rate is where the tax deferral benefit comes from.

Tax component	Incorporated (MPC)	Unincorporated (sole proprietor)
Federal rate on first $500,000 active income	9% (with SBD)	Federal personal marginal rates
Alberta rate on first $500,000 active income	2% (small business rate)	8% (up to $61,200)10% ($61,200 – $154,259)12% ($154,259 – $185,111)13% ($185,111 – $246,813)14% ($246,813 – $370,220)15% (above $370,220)
Combined rate on first $500,000	11%	Varies by total income
Federal rate above $500,000	15% (general rate)	Federal personal marginal rates
Alberta rate above $500,000	8% (general rate)	8% to 15% (personal brackets — see above)
Tax returns required	T2 (federal) + AT1 (Alberta)	T1 (personal)

The $500,000 business limit applies to active business income earned by a CCPC. Income your corporation earns from practising medicine qualifies for this lower rate. Passive investment income, such as interest or capital gains earned inside the corporation, follows different rules, covered below.

Tax deferral does not mean tax elimination. When you eventually withdraw funds from the corporation as salary or dividends, you pay personal tax on that amount. The advantage is timing: you control when to take the income, and you can invest or use the retained earnings within the corporation in the meantime. For physicians who can retain a significant portion of practice income, this deferral can be substantial over a career.

Salary vs. Dividend: A Strategic Trade-Off

Once incorporated, you choose how to pay yourself from the corporation. This decision affects your RRSP contribution room, your CPP obligations, and your personal borrowing capacity. Neither option is universally better; the right mix depends on your financial situation and retirement goals.

Paying Yourself a Salary

• Salary counts as earned income for RRSP purposes. Your RRSP deduction limit is 18% of prior-year earned income, up to $33,810 for 2026. Dividends do not count as earned income and do not create RRSP room.
• Salary is a deductible expense for the corporation, reducing its taxable income.
• Lenders typically require salary income to assess personal borrowing capacity for mortgages or practice expansion loans.

Paying Yourself Dividends

• Dividends are not subject to CPP contributions. For 2026, the maximum employee CPP contribution is $4,230.45 on pensionable earnings up to $74,600.
• Dividends also avoid CPP2 contributions, which apply at 4% on earnings between $74,600 and $85,000 (maximum employee contribution of $416.00 in 2026).
• With eligible dividends, a tax credit lowers your personal tax, so you pay a lower effective rate than on the same amount received as ordinary income.

Many incorporated physicians use a blend of salary and dividends. The salary component generates RRSP room and builds CPP entitlement, while dividends reduce payroll costs. Family physicians in Alberta working with an accountant who understands these trade-offs can structure their compensation to fit their personal financial plan.

CPSA Requirements for Incorporating Your Practice

Incorporating a medical practice in Alberta requires approval from both the provincial corporate registry and the CPSA. You must incorporate under the Alberta Business Corporations Act, and the CPSA must issue a permit before the corporation can practise medicine.

Requirement	Detail
Governing legislation	Health Professions Act; Alberta Business Corporations Act
CPSA permit	Required before the corporation can practise medicine
Voting shareholders	Must hold active CPSA registration
Non-voting shareholders	Spouses, common-law partners, and children of registered physicians
Active permit	Physician must maintain active CPSA permit to hold PC permit
Liability statement	Articles of Incorporation must address the restriction on limited liability
Corporate name	“Professional Corporation” is the permitted legal element for Medicine under the Business Corporations Act. Corporate names must also comply with CPSA bylaws and naming guidelines. Confirm the proposed name with both the Corporate Registry and the CPSA before filing.

Only physicians with active CPSA registration can hold voting shares in a medical professional corporation. Spouses, common-law partners, and children may hold non-voting shares. The Articles of Incorporation must include a statement on the restriction of limited liability. This means the physician remains personally liable for their professional actions, even though the practice operates through a corporate entity.

Compliance Thresholds That Protect Your Tax Advantage

Two federal tax rules can reduce or eliminate the benefits of the small business rate for incorporated physicians. You need to understand both to keep the 11% combined rate over the long term.

The Passive Income Threshold

If your corporation earns passive investment income (such as interest, capital gains, or rental income), the $500,000 business limit starts to shrink once that income exceeds $50,000 per year. Passive income of $150,000 fully eliminates the business limit. This means a physician whose corporation holds a large investment portfolio may gradually lose access to the 11% combined rate on active practice income.

Tax on Split Income (TOSI)

The Tax on Split Income rules restrict how you can pay dividends to family members who hold shares in your corporation. The CRA taxes dividends paid to family members at the highest personal marginal rate if those members do not meet specific involvement or age-based exclusions. These rules apply to adults as well as minors and have been in effect since the 2018 tax year.

Important — TOSI and professional corporations: The Excluded Shares exception, which can protect dividends paid to family members aged 25 or older who hold at least 10% of the corporation’s votes and value, is not available to professional corporations. The CRA’s own guidance explicitly confirms this: a family shareholder in a professional corporation cannot rely on the Excluded Shares rule to avoid TOSI, because professional corporations are specifically excluded from that test. The only exclusions generally available to non-active family members of an MPC are the Excluded Business test (requiring regular, continuous, and substantial involvement — broadly, an average of at least 20 hours per week during the operating period) and, in some circumstances, a Reasonable Return on capital contributed or risk assumed. Consult a tax adviser before paying dividends to any family shareholder of your MPC.

Key compliance points to discuss with your accountant:

• Passive investment income between $50,000 and $150,000 progressively reduces the $500,000 business limit on a straight-line basis.
• TOSI rules apply to dividends and interest paid to family members from a related business, but not to salary.
• The Excluded Shares exception to TOSI does not apply to professional corporations; family shareholders must meet the Excluded Business or Reasonable Return tests to avoid the highest marginal rate on dividends.
• TOSI generally does not apply to salary paid to family members, provided the pay is reasonable for work they actually perform.
• Both thresholds require ongoing monitoring throughout the life of your corporation, not just at initial setup.

Incorporation Is Not the Right Choice for Every Physician

The tax advantages above are significant, but they come with added costs and complexity. Incorporated physicians must file a federal T2 corporate return and an Alberta AT1 provincial return each year, in addition to their personal T1 return. This increases accounting fees and the time spent on compliance.

The tax benefit depends on your capacity to retain earnings in the corporation. Physicians incorporate primarily to manage expenses and generate retirement savings, so the advantage may be smaller if you need to withdraw most of the income each year. Several factors influence whether incorporation is the right choice for your practice:

• Your current and expected income level
• How much practice income you plan to retain in the corporation versus withdraw for personal use
• Your retirement timeline and long-term savings goals
• Whether family members will be involved as shareholders, which triggers TOSI considerations — including the restriction that the Excluded Shares exception does not apply to professional corporations
• The additional cost of corporate tax filings, accounting, and legal advice

Family physicians in Alberta considering incorporation should work with an accountant who understands the regulatory and tax requirements of medical professional corporations in this province. The CPSA recommends consulting a lawyer or accountant with expertise in incorporation before beginning the process.

Frequently Asked Questions

What is the combined corporate tax rate for an incorporated physician in Alberta?

The combined corporate tax rate on active business income up to $500,000 is 11%. This consists of a federal net tax rate of 9% after the small business deduction, plus an Alberta small business rate of 2%. Income above $500,000 faces higher general corporate rates: 15% federally and 8% provincially.

How does the passive income threshold affect my small business deduction?

If your corporation’s passive investment income exceeds $50,000, the $500,000 business limit begins to phase out on a straight-line basis. The limit reaches zero once passive income hits $150,000. At that point, the higher general corporate rates would apply to your active business income instead of the combined 11%.

Do I still pay CPP if I take dividends instead of salary from my corporation?

No. Dividends are not subject to CPP contributions or CPP2 contributions. However, dividends do not generate RRSP contribution room, which may affect your long-term retirement savings strategy. Many incorporated physicians use a combination of salary and dividends to balance CPP entitlement, RRSP room, and overall tax efficiency.