When Are Corporate Taxes Due in Alberta? T2 Filing and Payment Deadlines

For an Alberta corporation, “tax deadline” can mean two different dates. The Canada Revenue Agency says a T2 Corporation Income Tax Return is generally due within six months of the end of the corporation’s tax year. If the tax year ends on the last day of a month, the return is due on the last day of the sixth following month. A September 30 year-end, for example, generally produces a March 31 filing deadline. If year-end falls on another day, CRA’s examples use the same calendar day in the sixth following month.

Payment usually comes first. CRA states that a corporation’s income-tax balance is generally due two months after year-end. Certain Canadian-controlled private corporations may qualify for a three-month balance-due date if the CRA conditions are met. That extension is not automatic for every private corporation. Eligibility can depend on factors such as the corporation’s status, income, small business deduction history, and the taxable income of associated corporations.

Most resident corporations must file a T2 for every tax year, even when they have no tax payable, unless a specific exception applies. A return is also the mechanism for reporting losses, refundable balances, tax credits, and other information that may affect future years. CRA says corporations with tax years starting after 2023 generally have to file electronically, subject to listed exceptions. That makes clean digital records and correct access to CRA services part of the year-end process, not an afterthought.

A nil balance does not turn the return into an optional task. Late filing can delay assessments, loss carry-forward information, refunds, or certainty about the company’s account. When tax is payable, missing the earlier payment date can produce interest even if the T2 is ultimately filed within the six-month window. A practical calendar therefore shows the year-end, estimated payment date, filing date, GST deadlines, payroll dates, and Alberta requirements separately.

Start by confirming the legal year-end shown in the corporation’s records and prior return. Reconcile every bank and credit-card account, collect unpaid customer invoices, identify bills that belong to the year, review payroll liabilities, and document major asset purchases. If shareholder advances, dividends, management bonuses, inventory, or vehicle use are involved, raise them before the financial statements are finalized. Decisions made after a deadline may not have the same treatment as decisions documented on time.

About eight to twelve weeks before year-end, prepare a working forecast of revenue, expenses, taxable income, instalments already paid, and cash available for the balance. Shortly after year-end, deliver a complete package instead of sending documents in fragments. Your accountant can then estimate the amount due, identify missing evidence, and create a realistic filing schedule. This article gives general information, not a deadline calculation for a specific corporation; confirm the exact dates and eligibility rules that apply to your company.