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Published: March 12, 2020

Last Updated: February 25, 2022


If you are a doctor then there are both tax and non-tax reasons for considering the corporate form of a business organization.

As a physician, you provide professional services and you are regulated by a governing professional body known as the Canadian Medical Association. This means that you will then need to have what is known as a professional corporation.

Tax Advantages of Incorporating a Professional Corporation for a Physician

Here are three potential significant tax benefits of incorporating a professional corporation for an MD:

  • Issuing salary or dividends to family members in lower tax brackets
  • A tax deferral is possible by retaining earnings in the professional corporation
  • The $800,000 capital gains exemption available for sale of a small business can only be claimed on the sale of shares of a qualifying corporation and not for the sale of a sole proprietorship or a partnership.

Tax Deferral

Net income of a medical sole proprietorship or a partnership is taxed directly in the hands of the owner. However, a physician’s professional corporation is a separate taxpayer with its own income tax rates.

A physician’s corporation which is incorporated in Canada and is controlled by those governed by the Canadian Medical Association who are also Canadian residents will normally qualify as a “Canadian-controlled private corporation”. This status allows it to claim the small business deduction, a reduction of the normal corporate income tax rate on the first $500,000 of a corporation’s annual taxable income earned from carrying on an active business in Canada.

The tax advantage which the shareholders of such a doctor’s corporation with active business income will enjoy is the ability to defer the payment of some income tax. A physician’s corporation eligible for the small business deduction pays tax at about 11 – 16% on its first $500,000 of taxable income. The percentages of tax differ depending upon which province the corporation is resident in. The remaining tax, which is paid by the shareholders upon receipt of dividends from the corporation, is deferred until dividends are paid. When dividends are paid the balance of the tax is levied on the shareholder. The tax rate is dependent on whether the dividend is an eligible or ineligible dividend, with the range being between 19% and 40% depending on the province.

The deferral is significant, especially for a taxpayer in the top marginal tax bracket, and means that approximately twice the funds are available for investment, since in effect tax money is being retained in the corporation and invested.

Doctors are eligible for this tax deferral when incorporating. Please take note of the discussion found below as to who can be shareholders in a professional corporation.

Electing Shareholders

In a regular corporation, you usually have the ability to elect anyone you like as a shareholder. However, in a professional corporation this is restricted to the rules set out by the governing professional body, which would be the Canadian Medical Association.

For example, a doctor in Ontario may issue non-voting shares to family members.

It is important to check these rules prior to incorporating and designating anyone as a shareholder.

Investment Income

The Canadian tax system is designed, in certain instances, to be neutral between income earned personally or through a corporation. As a result, after the shareholder pays tax on his dividends, the total tax burden will be approximately the same amount he would have paid if the income was received directly

This neutrality means that for non-active income of an MD’s corporation such as investment income or capital gains, the professional corporation effectively pays tax at the same rate as an individual. Accordingly there is no material tax deferral possible on passive income.

See also
Incorporation of Real Estate Agents: Canadian Tax Lawyer Perspective

Capital Gains Exemption

The other main tax benefit to incorporation of a medical practice is the ability to claim the $800,000 capital gains exemption on a sale of the professional physician practice. The complex rules provide, in effect, that to claim the exemption the shares must be of a Canadian-controlled private corporation, at least 90% of the assets of which are used in an active business carried on in Canada, or a holding company which owns such shares. Additionally, there are further rules stating the taxpayer must hold the shares for a period of two years prior to the sale.

Where the shares qualify, the owner can sell them and the first $800,000 of capital gains are exempt from tax. Note that the exemption applies to the individual and not the corporation. Once an owner has claimed $800,000 of capital gains exemption, the exemption is no longer available on a sale of other qualifying shares. If a spouse owns shares of the business the capital gains exemption is effectively doubled (family members of a doctor are permitted to own shares, ie spouse, parents and children).When the capital gains exemption is calculated, it is reduced by the taxpayer’s Cumulative Net Investment Losses (“CNIL”) balance. The CNIL balance is the amount by which the total of all investment expenses exceeds the total of all investment income for all tax years after 1987. The CNIL can be calculated by filling in CRA’s form T936 for each year after 1987.

Capital Gains Purification Transactions

The capital gains exemption mentioned above may only be used when certain tests have been met. They are too numerous and technical for this article, however if a doctor’s corporation does not meet any of these tests, there may still a way to take advantage of the exemption. This involves removing non-qualifying assets (usually cash or investments) from a physician’s corporation in order to ensure that the asset mix meets the tests. This process is often referred to as the “purification” of the professional corporation.

Limited Liability

Liability Protection Is Generally The Main Non-tax Reason To Incorporate, And Is The Main Motivation For Many Incorporation Of Doctors To Take Place.. While a sole proprietor or partner in a general partnership has unlimited liability to creditors of the business, shareholders of a corporation have no such risk. Without the protection of limited liability most entrepreneurs would not take the risks of going into business.

In a professional corporation, the liability is different. As a medical doctor, you may be sued for malpractice. A professional corporation does not provide the same protection as a regular corporation. It actually provides no additional limitation on liability in this case.

A professional corporation does provide some protection from creditors if you borrow money. Perhaps you have taken out a loan to finance a new office or to purchase some new equipment. A professional corporation will shield you from personal liability if you are unable to repay those loans.

Disadvantages of Incorporation

Double Taxation

Integration of the personal and corporate tax systems has virtually eliminated double taxation with the additions of the gross up, credit calculation and the introduction of the general rate income pool (“GRIP”), which is explained below. Corporate profits from active business income in excess of $500,000 per year are taxed at full corporate rates. With full integration, these amounts are no longer subject to double taxation as explained below.

Eligible and Ineligible Dividends

Eligible dividends are taxed at a reduced federal rate, where ineligible dividends are taxed at the full federal rate because these types of dividends are issued from profits earned and taxed at the small business deduction rate. Therefore there is no resulting double taxation.

See also
Proposed Changes in Bill 213 to Ontario Business Corporations Act

For CCPC’s (“Canadian Controlled Private Corporation”), an eligible dividend is a dividend that is paid out of the corporation’s general rate income pool. The GRIP account balance generally reflects taxable income that has not benefited from the small business deduction or any other special tax rate. This eligible dividend designation is at the discretion of the company paying the dividend. It should be noted that the GRIP balance must be sufficient for the dividend to be deemed eligible.

For non-CCPC’s the situation is the opposite. All dividends will be eligible dividends unless the corporation has a ‘low rate income pool’ (LRIP). The LRIP is generally made up of taxable income that has benefited from certain preferential tax rates. An important difference is that these non-CCPC’s do not have discretion as to whether the dividend is eligible or not. The LRIP balance must be paid out first as an ineligible dividend before eligible dividends can be paid.

Other Disadvantages

A corporation is also subject to strict rules governing the taxation of shareholder benefits, such as shareholder loans or the use of a company car.

Finally, the transfer of the unincorporated medical practice or medical partnership to a corporation will be a taxable transaction unless a section 85 rollover agreement is made and the appropriate election is filed with Revenue Canada. Provided such an election is made, however, the transaction can be free of any immediate adverse tax implications.

Life Insurance

When a proprietorship or a partnership incorporates, it is generally a good idea to consider any life insurance needs. Upon the incorporation of a physicians partnership, a shareholders agreement will normally be entered into, often requiring funding through life insurance. An incorporated sole proprietorship may not have any additional life insurance requirements, but in certain circumstances, such as the entrepreneur being a single parent, additional life insurance to pay for any deemed capital gains incurred on the death of the shareholder might be appropriate.

Personal Services Business

A Personal Services Business is essentially an incorporated employee. For example, you work as an in-house doctor for a hospital and have heard about all the advantages to incorporating a professional corporation. So you incorporate and then enter into a contract with the hospital stating you are not a professional corporation and are to be paid as such.

From the Canada Revenue Agency’s point of view, you are running a personal services business. The easiest way to think about it is without the corporation, would you reasonably be considered an employee of the hospital.

What this means is that you are not eligible for any of the advantages that come along with incorporation which include the small business deduction and ability to deduct certain expenses.

If you think you are running a personal services business, it is important to speak with a Toronto Tax Lawyer prior to incorporating so that we may assist you and you do not waste money incorporating if there is no advantage.

Canadian Tax Lawyer Assistance

If you are looking at the benefits of incorporating your professional corporation or are looking for the best method to compensate your employees or shareholders, give our Ontario tax lawyers a call. Effective income tax planning is required to ensure you and your professional medical corporation keep as much of the profits as you are entitled to.


"This article provides information of a general nature only. It is only current at the posting date. It is not updated and it may no longer be current. It does not provide legal advice nor can it or should it be relied upon. All tax situations are specific to their facts and will differ from the situations in the articles. If you have specific legal questions you should consult a lawyer."

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