Does incorporating a dental practice save tax?

Dentists often hear that incorporating a practice brings tax benefits. Whether those benefits are real for a particular dentist, and how large they are, depends on income, cash-flow needs, family circumstances, ownership structure and long-term plans.

This article covers the small-business tax rate, tax deferral and the limits on both. Related articles cover who can own a dental corporation and how dentists can structure their practices.

The goal is not simply to create a corporation, but to create a structure that supports the dentist's short-, medium- and long-term objectives. A corporate structure can sometimes be reorganized later, but restructuring can have legal and tax consequences, so it is generally better to identify the goals before shares are issued.

Is the benefit a tax saving or a tax deferral?

The main advantage is often tax deferral rather than a permanent tax saving. Income kept in the corporation is taxed at the corporate rate, and personal tax generally arises only when funds are withdrawn as salary, bonus or dividends.

The benefit is therefore most valuable when the dentist does not need to withdraw all of the corporation's annual profit personally.

What corporate tax rates apply in 2026?

A Canadian-controlled private corporation (CCPC) carrying on an active business in BC may be eligible for the small-business tax rate on qualifying active business income, up to a business limit of $500,000. Income above that limit is taxed at the general corporate rate.

The $500,000 limit can be reduced or shared in certain circumstances, including where the corporation is associated with other corporations or has enough passive investment income.

How does tax deferral work?

If the corporation earns $500,000 of qualifying active business income and the dentist needs only part of the after-tax amount personally, the corporation can retain the balance for business needs or other permitted corporate purposes.

This can allow a practice to build working capital, purchase equipment or fund expansion without immediately paying personal tax on every dollar of corporate profit.

How does passive investment income affect the small-business limit?

The small-business limit is not a $500,000 allowance that can be preserved indefinitely while a corporation accumulates passive investments. For a CCPC and its associated corporations, the limit is generally reduced when adjusted aggregate investment income is between $50,000 and $150,000, and is eliminated once that income reaches $150,000.

The test is based on investment income, not simply the dollar value of investments held. Dentists who plan to hold significant investment portfolios inside a professional corporation should model the corporate tax consequences before doing so, and should keep in mind that a dental corporation must not earn business income from its investments (see What is a dental corporation, and who can own one in BC?).

What are the trade-offs of incorporating?

Incorporation offers deferral and flexibility, but it also requires planning, corporate tax filings, and corporate maintenance. However, the advantages often outweigh these costs:

• Tax deferral: income left in the corporation is taxed at the lower small-business rate until it is withdrawn.

• Flexible income: the dentist can choose salary, dividends, a shareholder loan, or a combination of the three.

• Limited liability: can limit business debts and financial obligations unrelated to professional negligence.

• Professional image: a corporate identity with patients, suppliers and other businesses.

• Estate planning: in BC, non-voting shares may be issued to family members or a family trust and potentially be transferred outside probate.

• Creditor-proofing: a properly structured dental corporation can put a dentist’s assets out of reach of the dentist’s creditors, subject to certain limits.

What questions should be asked before incorporating?

• How much profit does the dentist actually need to withdraw personally each year?

• How much cash is expected to remain in the corporation?

• Are there associated corporations that share the small-business limit?

• Will the corporation accumulate significant passive investment income?

• Who will own the voting and non-voting shares, and does the structure comply with BC's professional-corporation rules?

For many BC dentists, incorporation is valuable because it can defer tax and give greater flexibility over how business capital is retained and used. The structure should be designed with both the tax rules and BC's professional-regulatory rules in mind.