Professional Corporation Accountant in Canada

Incorporation allows active business income within the federal small business limit of $500,000 to be taxed at a combined rate between 9% and 12.2% in most provinces for 2026, compared with personal marginal rates above 50%. Income retained in the corporation is tax-deferred until withdrawn. It may also create limited income-splitting opportunities within TOSI rules, flexibility in retirement planning, and access to the lifetime capital gains exemption on a qualifying share sale. Incorporation does not protect against claims arising from your own professional negligence.

It depends on your income level, RRSP room and borrowing needs. Salary creates RRSP contribution room, requires CPP contributions, and is deductible to the corporation. Dividends create no RRSP room, avoid CPP, and are paid from after-tax corporate income. Most incorporated professionals use a combination — enough salary to generate RRSP room and support mortgage applications, with dividends for the remainder. The right mix should be reviewed annually before year-end.

Yes. Your corporation files a T2 and you file a T1 personally. Salary appears on a T4 and dividends on a T5, and both must be reported on your personal return. Incorporating adds a return; it does not replace one.

Only within the tax on split income (TOSI) rules. TOSI applies the highest marginal rate to dividends paid to family members unless an exclusion applies — most commonly where the family member works an average of 20 hours per week in the business, is 25 or older and holds at least 10% of votes and value in a corporation that is not a professional corporation, or is 65 or older as the transferring spouse. Because the excluded-shares exclusion is unavailable to professional corporations, income splitting is significantly more restricted for regulated professionals than for other incorporated businesses.

Yes, and many professionals do. But adjusted aggregate investment income above $50,000 in a year reduces the following year’s small business limit by $5 for every $1 over the threshold, eliminating it entirely at $150,000. This should be monitored through the year rather than discovered at filing.

Expenses incurred to earn business income, including professional dues and college fees, malpractice and liability insurance, office rent and utilities, staff salaries, equipment and capital cost allowance, continuing education, software, professional fees, and business-use vehicle and home-office costs within CRA limits. Documentation matters as much as eligibility.

Filing frequency depends on annual taxable supplies: generally annually up to $1.5 million, quarterly between $1.5 million and $6 million, and monthly above that. Many health professionals supply exempt services and may not need to register at all — but services such as medical-legal reports, cosmetic procedures and some assessments can be taxable. The exempt-versus-taxable analysis is one of the more common errors we see.

Six months after fiscal year-end. Payment is generally due three months after year-end for CCPCs claiming the small business deduction, and two months otherwise — so the balance is often payable before the return is due. Corporations with tax owing above the threshold must also pay monthly or quarterly instalments.

A sale may be structured as a share sale or an asset sale, with materially different tax outcomes. A qualifying share sale may access the lifetime capital gains exemption, which can shelter a substantial gain — but shares must meet asset and holding-period tests, often requiring purification well in advance. Winding up requires distributing retained earnings, using any capital dividend account balance, and final returns. Planning should begin years before a sale, not at the point of sale.

Confirm your college permits incorporation, reserve a compliant name including your professional designation, incorporate provincially under the statute governing your profession with articles reflecting share ownership restrictions, obtain your certificate of authorization from the college, then register with the CRA for a business number and any GST/HST and payroll accounts. Incorporation often takes days; college approval commonly takes weeks.

A notional account tracking tax-free amounts within your corporation — principally the non-taxable half of capital gains and certain life insurance proceeds. Balances can be paid to shareholders as tax-free capital dividends, with an election filed before payment. The balance moves with corporate capital gains and losses, so it should be verified before declaring a capital dividend rather than assumed.

Yes. Retained earnings can be invested corporately, providing a larger initial capital base because corporate tax was lower than personal tax. This must be weighed against the passive income rules, which can reduce your small business deduction, and coordinated with RRSP room, TFSA capacity and any individual pension plan.

Corporate taxable income is allocated among provinces based on permanent establishments, using payroll and gross revenue. Practising in a second province may create a permanent establishment there, requiring allocation and potentially extra-provincial registration and a second college registration. Rates differ by province, so allocation affects your total tax.

Yes, if the corporation pays salary or wages to anyone including you as a shareholder-employee. You must open a CRA payroll program account, remit source deductions on schedule, and issue T4s by the end of February. If you take only dividends, no payroll account is required — but you also generate no RRSP room.

For most professionals earning more than they spend personally, yes — the deferral advantage remains meaningful. It is weaker if you withdraw everything you earn each year, if you practise through a partnership sharing a single small business limit, or if you are in Quebec and cannot meet the 5,500-hour test. It is a calculation, not a rule of thumb, and it is worth redoing when your income or practice structure changes materially.