Once an IT contractor operates through a corporation, owner compensation becomes a planning decision, not an administrative default. The corporation can pay the owner through salary, dividends, or a combination of both. The right mix depends on more than the current-year tax bill.
Salary and dividends affect corporate tax, personal tax, CPP entitlement, RRSP contribution room, mortgage documentation, and how much profit stays inside the corporation compounding at the corporate rate. Getting the mix right requires understanding what each option actually does.
What salary does
Salary is employment income paid by the corporation to the owner-operator. The corporation deducts the amount as a business expense, issues a T4 slip, withholds income tax, and remits CPP contributions before the pay date.
Salary is useful when:
- the owner needs RRSP contribution room for the year (18% of prior year earned income, subject to the annual ceiling)
- CPP retirement entitlement is a priority
- T4 employment income is required for mortgage qualification or lending
- the corporation needs to reduce taxable income to stay within the small business deduction limit
- a clear documented record of services performed is valuable
The cost is payroll administration and the CPP contribution. As an owner-manager, the corporation pays the employer portion and you pay the employee portion. Both amounts come from corporate or personal funds you control, so the combined CPP cost is roughly double what a T4 employee at arm’s length would pay. Whether that cost is acceptable depends on whether CPP retirement entitlement is part of the planning.
What dividends do
Dividends are distributions of after-tax corporate profit to shareholders. The corporation does not deduct them. You report them on your T1 personal return and apply the gross-up and dividend tax credit mechanism, which is designed to partially account for the corporate tax already paid on that income.
Dividends are often administratively simpler than payroll. There are no T4s, no payroll remittances, and no CPP contributions triggered.
Dividends are most useful when:
- the owner has sufficient RRSP room from prior years and does not need additional room
- CPP entitlement is not a planning priority
- the corporation has retained earnings from prior years available for distribution
- simplicity and lower payroll overhead are valued more than the salary deduction
The main cost is that dividends generate no RRSP contribution room and build no CPP entitlement. For a contractor at peak earning years, that gap can matter significantly over a career.
Tax integration: the big picture
The Canadian tax system uses a concept called integration, which attempts to produce similar after-tax results whether income passes through a corporation or is earned directly. In practice, integration is imperfect, and the gaps create planning opportunities.
The key gap for incorporated IT contractors is the corporate tax deferral. Ontario’s combined federal-provincial corporate tax rate on active business income eligible for the small business deduction is approximately 12.2%. Ontario’s top personal marginal rate reaches approximately 53.53%. Income taxed inside the corporation at 12.2% and left there is money that would otherwise have been taxed at the personal rate. The retained amount compounds inside the corporation until it is eventually distributed.
This deferral is not a permanent tax elimination. When the money eventually comes out as a dividend, the shareholder pays additional personal tax. The benefit is the time value of deferral: more money available to invest now, less immediately surrendered to personal tax.
The salary versus dividend decision interacts with this deferral. Paying more salary reduces corporate income and eliminates some deferral opportunity. Paying more dividends preserves deferral but shifts income from employment to investment income on your T1.
The RRSP room gap
One of the most consequential differences between salary and dividends is RRSP contribution room. The 18% of earned income calculation that determines annual RRSP room counts salary and other employment income. It does not count dividends.
An incorporated contractor drawing only dividends accumulates no RRSP room in those years. The room is not deferred; it is permanently lost for the years it was not generated. RRSP accounts shelter investment returns from tax until withdrawal and provide an immediate deduction in the contribution year. For a contractor at high income levels, the annual RRSP ceiling (CAD $32,490 in 2025, indexed annually) represents a significant tax shelter that disappears entirely in years with no employment income.
The right question is not whether RRSP room is valuable in the abstract. It is whether generating RRSP room by paying salary is more valuable than the alternative: keeping more income in the corporation at the corporate tax rate. That comparison requires knowing the current corporate tax rate, the contractor’s marginal personal rate, whether RRSP room from prior years remains unused, and the corporation’s retained earnings position.
A contractor with unused RRSP room from prior years and a strong corporate cash position may not need to generate additional room in the current year. A contractor early in a corporate structure with no existing RRSP balance may find the room is the most valuable planning output of the year.
CPP: cost and benefit
As a shareholder-employee paying yourself salary, you contribute to the Canada Pension Plan on your employment income. The maximum annual CPP contribution for 2025 is CAD $4,034.10 for each of the employee and employer portions, plus additional amounts under CPP2 for income above the first earnings ceiling.
The practical effect is that paying yourself salary through the corporation results in a combined CPP cost of approximately CAD $8,000 to CAD $9,000 or more per year once CPP2 thresholds are included, split between the corporate and personal sides but ultimately coming from money you control.
Whether that cost is worthwhile depends on the value you place on CPP retirement entitlement. Contractors who are building RRSP balances and have other retirement assets may conclude the CPP contribution is a poor use of corporate funds compared to deferral. Contractors with limited retirement savings outside the RRSP may find the guaranteed CPP entitlement valuable.
Neither position is automatically correct. It is a planning judgment, not a default.
Mortgage qualification and lending
Salary creates a T4 employment income history. Lenders reviewing a mortgage application typically find T4 income straightforward to assess: it appears directly on Notice of Assessments and T4 slips, it is consistent in form, and underwriting processes for T4 income are standard.
Dividends and shareholder draws appear differently. Lenders may require two years of T1 personal returns, Notice of Assessments, and sometimes the corporate T2 and financial statements to assess the sustainability of dividend income. Some lender programs apply a higher income hurdle for self-employed or incorporated borrowers than for T4 employees with equivalent income.
For incorporated contractors who are planning a mortgage application, refinancing, or a significant lending event, compensation structure should be reviewed before the income history is needed. Changing to a salary-heavy structure one year before a mortgage application may not produce a long enough history. Planning two to three years in advance provides flexibility.
Retained earnings and what is actually available
When corporate income is not paid out through salary or dividends, it accumulates as retained earnings. Retained earnings are an asset on the corporate balance sheet, but they are not necessarily available as cash.
Cash must be held for GST/HST remittances before they are due. Corporate income tax instalments and the year-end balance owing must be funded. Operating expenses need to be covered. The gap between corporate retained earnings on paper and corporate cash available for distribution is often wider than contractors expect.
A compensation plan based on an assumption that all retained earnings are available as a dividend pool can create a cash shortage when the CRA remittance comes due. The salary versus dividend mix needs to account for the corporation’s actual cash position, not just its accounting income.
Retained earnings also raise longer-term questions: what the accumulated amount will eventually be used for, whether it will eventually be paid out as dividends or reinvested, and whether the corporate structure is still the right one given how the contractor’s practice has evolved.
Why the answer changes each year
The best compensation mix for any given year depends on:
- total corporate income for the fiscal year
- corporate income in prior years and projected future years
- the contractor’s personal income from other sources
- current RRSP contribution room from the most recent Notice of Assessment
- whether a CPP contribution is wanted in the year
- mortgage or lending plans in the next two to three years
- dividends or salary already paid earlier in the year
- the corporation’s cash position and upcoming obligations
- the owner’s personal cash needs for the year
None of these inputs are fixed from year to year. A compensation structure optimized for one year can be suboptimal or actively counterproductive in a year where corporate income is different, a mortgage is in progress, or the contractor’s personal income profile has changed.
The calculation should be reviewed before the corporation’s fiscal year-end while there is still time to act on the results.
The timing constraint
Salary paid in a given fiscal year must be paid or recorded as a payable before the corporation’s fiscal year-end to be deductible in that year. For a corporation with a December 31 fiscal year-end, decisions need to be made in the fall, not in the following spring when the T2 is being prepared.
Dividends require a dividend declaration by the board of directors (typically documented by a resolution), which must be done correctly to support the distribution on both the corporate and personal returns.
Waiting until T2 preparation to decide the salary and dividend mix is common and consistently produces worse outcomes than reviewing the decision earlier in the fiscal year when corporate income projections are available and the timing to act is still open.
What to bring to a compensation review
A CPA reviewing salary and dividend mix will typically need:
- year-to-date corporate income and expected income for the rest of the fiscal year
- the corporation’s cash balance and pending obligations (GST/HST due, income tax instalments, accounts payable)
- personal cash needs for the coming months
- the most recent Notice of Assessment showing available RRSP contribution room
- any salary or dividends already paid in the current fiscal year
- mortgage or lending plans in the next two years
- prior year corporate and personal returns for context on the previous approach
The corporate T2 and personal T1 are planned together. The salary level chosen for the T2 year directly affects the T1 that follows. The decision cannot be optimized by reviewing either return independently.
For contractors who are not yet incorporated, the decision to incorporate is the prior question. For those already incorporated, the reasonableness of the salary level is a separate consideration from the salary-versus-dividend choice, though both affect the same returns.
The salary and dividend mix affects more than the current-year tax bill. It determines RRSP room, CPP entitlement, mortgage documentation, and how much income stays inside the corporation. For incorporated IT contractors, working with a CPA who prepares both the T2 and T1 together and reviews the compensation decision before the fiscal year-end produces better outcomes than treating the returns as separate exercises.