Corporate tax accountant for Mississauga corporations

The year-end covers the T2 with Schedule 1 and Schedule 50, the CCA schedule, the small business deduction, T4 or T5 slips for the owner’s pay, and the instalments for the year ahead.

One return, two layers of tax

Ontario has the CRA collect its corporate income tax, so a Mississauga corporation files a single T2 that carries both the federal and the provincial charge. Combined, active business income eligible for the small business deduction is taxed at 11.2% on a $500,000 business limit. That is 9% federal plus Ontario’s 2.2% lower rate for days after 30 June 2026 (12.2% before that date; a year that straddles the change is prorated by days, so a calendar-2026 year-end blends to roughly 11.70%).

General income — active income above the business limit, or income that does not qualify — is taxed at 26.5%, being 15% federal plus Ontario’s 11.5% general rate. The cut on 1 July 2026 widened the gap between the two bands to 15.3 points. For a growing Mississauga company approaching the limit, or one that shares the limit with associated companies, that spread is the number to plan against. A small manufacturer whose profit jumps in a strong year, or a distributor that has added a holding company, should look at how the business limit is being used before the year closes rather than after.

Capital cost allowance on the equipment that runs the business

Mississauga’s small-business base leans towards companies that own real equipment: machining centres and presses, racking and forklifts, refrigerated vans, tractors and trailers, tools and service vehicles. None of it is deducted in the year it is bought. It goes onto the CCA schedule of the T2 in its class, and the deduction is claimed at that class’s rate over time. Which class applies, whether an asset was available for use before year-end, and whether a trade-in or disposal produced recapture or a terminal loss all change the corporate tax for the year.

We prepare the CCA schedule from the actual purchase documents rather than from a bank statement line, because the invoice decides the class, the cost and the date. Where a company is planning a large purchase, we look at the timing against the fiscal year-end first. CCA classes explained covers the common classes and rates, and the half-year rule covers the first-year mechanics.

HST instead of two sales taxes

Ontario harmonized its provincial sales tax with the GST, so a single 13% HST covers both and is administered federally. The corporate consequence is cleaner than it looks. There is one registration, one return and — critically — the provincial component is recoverable as an input tax credit in the same way the federal component is. No provincial sales tax ends up buried inside cost of goods sold or the cost of a machine. For a Mississauga importer, HST paid at the border is claimed the same way, and exports to customers outside Canada are generally zero-rated. Each of those flows has to reconcile to the general ledger before the T2 is prepared, because a mismatch between HST returns and reported revenue is one of the first things a CRA reviewer compares. Input tax credits covers what is recoverable and what records the CRA expects.

Employer health tax: the rate is chosen before the exemption

Ontario levies an employer health tax on remuneration, and it contains a feature that catches employers out. The rate is selected from the payroll bands using total Ontario remuneration before the exemption is deducted; only then is the exemption subtracted from the taxable base. Crossing a band boundary therefore raises the rate applied to everything, not just the excess.

The exemption is $1,000,000, and no exemption is available where the employer or its associated group has more than $5,000,000 of annual Ontario payroll. Associated employers must file an allocation agreement to share the single exemption between them. For a Mississauga plant or warehouse running more than one shift, payroll climbs quickly, and this is a cost to model before the hiring rather than after. It is also deductible on the T2, so the accrual belongs in the year-end figures.

The registry annual return is a separate filing

An Ontario corporation’s annual return is filed through the Ontario Business Registry within six months of fiscal year-end. It is not part of the T2, it is not filed with the CRA, and missing it does not produce a tax assessment, which is precisely why it gets forgotten. It is a corporate-law filing that keeps the company in good standing and its registered information current. The consequences of neglect are administrative rather than fiscal until the day they are not, typically when a lender, purchaser or landlord asks for proof of status. Corporate annual returns explains how the obligation differs by jurisdiction of incorporation.

Owner pay out of a Mississauga corporation

Most Mississauga owners we work with pay themselves through a mix of salary on a T4 and dividends on a T5. Salary creates RRSP room and CPP entitlement and is deducted by the company; dividends carry no payroll cost but are paid from after-tax profit. Where a spouse or adult child holds shares, dividends are not the planning tool they once were, because the tax on split income can apply the top marginal rate unless the recipient meets an exclusion such as a sufficient labour contribution or excluded shares. The analysis turns on facts — hours actually worked, ownership percentages, the nature of the business — and it belongs before the dividend is declared. Tax on split income sets out the exceptions.

Instalments once the corporation is profitable

A Mississauga corporation past its first profitable year generally moves onto instalments, paying its combined federal and Ontario tax through the year rather than at filing. The base is built from prior-year figures, so a company coming off a strong year keeps paying at that level into a weaker one unless the estimate is revised. The reverse is more common and more expensive: a fast-growing company pays instalments sized to a smaller prior year, then meets a large balance and interest at filing. The balance is generally due three months after year-end for a Canadian-controlled private corporation claiming the small business deduction, ahead of the return itself, so the cash question arrives before the paperwork. T2 deadlines and penalties sets out the dates.

Working with a CPA who has no Mississauga office

EverStone is a fully virtual firm serving owner-managed companies in BC, Alberta, Ontario and Manitoba. There is no Mississauga office, no branch and no local staff. Ontario corporate tax is reported inside the federal return under rules that are identical wherever the preparer sits, and the return is transmitted electronically. The engagement runs entirely online: secure document exchange, video calls booked around your schedule, and e-signature. What you give up is the ability to drop a box of receipts at a reception desk. What you get is the same CPA on the file from the first question to the filed return.

With a rate change mid-year, the year-end target matters more, and a budget built from the operations fixes it before the last quarter.