Incorporating: the small business deduction, salary vs dividends, and the family-income traps (2026)

This guide is part of Tax-saving strategies for Canadians (2026).

Who this is for

Contractors, consultants and business owners who earn well above what they spend and can leave money in the company. If you spend everything you earn, incorporating mostly adds paperwork; the tax you defer on retained profit is where the value is.

How it works

The small business deduction. A Canadian-controlled private corporation pays federal tax of 9% on its first $500,000 of active business income (ITA section 125), instead of the 15% general rate. Ontario adds 3.2%, for a combined 12.2% in 2026. Profit taxed at that rate and left in the company is not taxed personally until it is paid out. That gap between 12.2% and a personal marginal rate in the 40s is the deferral.

Salary. Deductible to the company, taxed to you at ordinary rates, and it creates RRSP room (18% of earned income, to the annual dollar limit) and CPP contributions (employee and employer halves; the 2026 maximum is $4,230 per half plus up to $416 of CPP2).

Dividends. Paid from after-tax corporate profit. A non-eligible dividend (from income taxed at the small-business rate) is grossed up 15% and earns a federal dividend tax credit of 9.0301% of the grossed-up amount; an eligible dividend (from income taxed at the general rate) is grossed up 38% with a 15.0198% credit. The gross-up and credit are built so that corporate tax plus personal tax on a dividend lands close to the personal tax on salary. Dividends create no RRSP room and no CPP.

Worked example: $150,000 of profit in Ontario, all paid out (2026)

Figures from the salary vs dividends calculator, using the 2026 corporate, dividend and CPP data files. The owner is a controlling shareholder, so no EI applies.

Dividends leave $7,554 more cash this year. The gap is $9,293 of CPP on the salary route, which buys a pension rather than disappearing, less the $1,739 more that the dividend route pays in corporate and personal income tax combined ($39,878 against $38,139). The salary route adds $26,164 of RRSP room. If instead $60,000 stayed in the company, only $7,320 of corporate tax would be due on it this year and the personal tax would wait.

The rules that trip people up

• Passive-income grind. The $500,000 business limit shrinks by $5 for every $1 of adjusted aggregate investment income above $50,000 earned in the previous year, reaching nil at $150,000 (Guide T4012, chapter 4). Investing retained profit inside the company can cost the low rate on active income.
• Tax on split income (TOSI). Dividends paid to a spouse or adult child are taxed at the top marginal rate under ITA section 120.4 unless an exclusion applies: the family member works in the business an average of 20 hours a week (this year or in any five previous years), is 25 or older and holds at least 10% of the votes and value of a corporation that is not a service business, receives no more than a reasonable return on what they contributed, or is the spouse of an owner who is 65 or older. Paying a family member a reasonable salary for real work is not TOSI, but ITA section 67 lets the CRA deny any unreasonable amount.
• Personal services business. A one-client contractor who would otherwise be that client’s employee loses the small business deduction and most deductions (Guide T4012, chapter 4).
• Integration is not a discount. Over the full cycle, salary and dividends are meant to cost about the same. Leaving money in the company is what saves tax, and only until you take it out.
• Ontario’s rate is changing. Ontario’s 2026 budget proposes cutting its small-business rate from July 1, 2026; the calculator uses the rate in force at verification.
• Lifetime capital gains exemption. Selling qualified small business corporation shares can use the $1,275,000 exemption for 2026, subject to the holding-period and active-asset tests in section 110.6.

What to do next

Run your own profit and province through the salary vs dividends calculator. Not incorporated yet? The self-employed tax calculator shows what you owe as a sole proprietor, and contract vs full-time checks whether the contract rate is worth it at all. More strategies: Tax-saving strategies for Canadians (2026).