How to file a corporate tax return in Canada: from scattered records to a finished T2

You do not need to memorize these. This is a small reference for the conversation with your accountant.

Think of the business year as a story. Invoices, receipts and statements are its pages. Bookkeeping puts those pages in order and checks what they say. Year-end accounts summarize the story; the T2 reports the corporation’s income tax calculation and financial information.

Handing over a box of pages is a perfectly understandable starting point. It just leaves more organizing to do than handing over completed books.

The corporation is a separate legal entity, even if you are its only owner. Filing your personal return does not file its T2.

The first diagram showed the route to a T2. This one shows the other jobs that may use the same records. They sit alongside corporate income tax; they are not later stages of the T2.

For example, a business with employees may also have payroll work. A business with GST/HST obligations has separate sales-tax work. Ask which apply to your company and who is handling each one.

Suppose you run a small consulting corporation. During the year, a customer pays you, you put some personal money into the company, and the company buys a laptop. Nothing unusual—yet the bank statement alone cannot explain it all.

The income statement tells the story of income and expenses over the year. The balance sheet is more like a photograph on the final day: what the company owns and owes then.

The bank balance is only one part of that picture. Remember your transfer into the consulting company? More money arrived, but that alone does not mean the company earned more profit.

Even the profit in the accounts is not automatically the income used to calculate tax. The accountant checks the differences required by tax rules. Ask for the plain-language explanation of the result, not a lesson in every adjustment.

You can delegate bookkeeping, year-end accounts and the T2. If you already maintain the books, agree on what review is needed. Set the responsibilities before work starts, including GST/HST and payroll where they apply.

Before gathering a year of records, find out which year you are reporting. A corporation’s financial year can end in a month other than December.

For an existing corporation, check the period on its last return or ask the accountant. If this is the first return and you do not know the year-end, make it an early question in the conversation.

This date closes the chapter of the business you are reporting. It also gives the starting point for the payment and filing deadlines.

Under CRA rules checked in August 2026, the T2 is generally due within six months after the tax year-end. The remaining income tax balance is generally due after two months, or three months for corporations meeting specific conditions.

Put two reminders in the calendar. One is for the money; the other is for the return. Ask your accountant to confirm both dates and what to do if the return is not ready by the payment date.

No activity does not automatically remove the filing requirement. A resident corporation generally still files a T2 even in an inactive year, subject to CRA’s exceptions.

If a return is late, identify the period, gather the records you have and include any CRA correspondence. Late filing can bring penalties. The useful first step is to establish what is outstanding, rather than guessing the consequences.

Perhaps the books are current. Perhaps the spreadsheet stops in June and the remaining receipts are in your email. Say which it is. You do not need to finish the bookkeeping before asking someone to take it on.

The starting point changes the work. Recovering missing records and recording months of transactions takes time, so it can affect the price. Agree on that work separately from preparing a return from completed books.

A letter can be written without being sent. It can be received without anyone having dealt with it yet. Keep the same distinction in mind when someone says the return is “done”.

Compare the notice of assessment with the filed return. If CRA changed something or asks for information, have the difference or request reviewed. Agree who handles that follow-up and what falls within the work you have arranged.

For the next year, keep the explanation beside the transaction while it is fresh. In our consulting-company example, a short note identifies the owner’s transfer; the laptop receipt stays with the purchase record. The next year’s story is easier to assemble when its pages already have labels.

That deserves its own guide. We reviewed public Reddit discussions about working with accountants: unexpected bills, missed replies and uncertainty about what was done. Read the actual excerpts, the limits of our research and the practical questions to ask before hiring.