T2 filing and balance due: two dates for the same corporate year

Establish the corporation’s actual year end

Use the legal entity and its tax-year end, which may differ from December 31. Keep the prior return, assessment and instalment history with the current financial package. A shareholder’s personal filing date does not set the corporation’s T2 deadline.

Events such as changes in control, amalgamations or wind-ups can require additional review. Do not carry forward a calendar solely because the business name is familiar. Confirm the period that the return actually covers.

Worked example: a June 30, 2026 year end

A hypothetical Ottawa corporation with a June 30, 2026 tax-year end has an ordinary T2 filing deadline of December 31, 2026. Its general two-month balance date is August 31, 2026. If the specific three-month conditions are satisfied, the applicable balance date is September 30, 2026.

Assume its reviewed income-tax estimate is $14,500 and $9,500 of instalments are properly credited for the year. The remaining estimate is $5,000 before other account items. Waiting until December to address that amount could miss either applicable payment date.

Check eligibility before using three months

CRA’s conditions include CCPC status throughout the year, a small-business deduction in the current or previous year and the relevant previous-year taxable-income/business-limit test, including associated corporations where applicable. Being privately owned or having modest sales is not sufficient by itself.

Instalment frequency is another question. Monthly or eligible quarterly instalments can arise during the year, followed by a balance payment. Neither the filing deadline nor the balance-day eligibility automatically establishes quarterly instalment eligibility.

Track each completion step

The preparation file should identify reconciled financials, assets, loans, shareholder transactions and unresolved issues. Assign responsibility for the tax estimate, payment, return review and filing. Keep confirmations with the period so a payment can be traced even before the T2 is submitted.

As of September 6, 2026, the general August 31 payment date in this example has passed, while the other stated dates remain ahead. Check the company’s actual situation promptly. Corporate registry returns, payroll and GST/HST obligations remain separate items on the owner’s calendar.

Put this into practice

• T2 preparation →
• Corporate owners →
• Entity-aware deadline planning →