When does an Ontario corporation have to file its annual return?

Ontario corporations incorporated under the Business Corporations Act (Ontario) must file an annual return with the Ontario government each year. The return is due within six months after the end of the corporation's tax year. For example, if your fiscal year ends December 31, the annual return is due by June 30 of the following year.

Since 2021, Ontario annual returns are filed through the Canada Revenue Agency when you file your corporate tax return (T2), rather than directly with the province. This change was introduced to reduce duplication. You complete Schedule 546 (for Ontario corporations) or Schedule 548 (for foreign business corporations) as part of the T2 filing.

Failing to file on time can result in the corporation being noted in default, which can eventually lead to dissolution. If your corporation has been dissolved for non-compliance, reinstatement is possible but involves additional steps and fees. Staying current with annual returns is one of the simplest ways to keep your corporation in good standing.