What happens if my Ontario corporation fails to file its annual return?

Ontario corporations that fail to file required annual returns with the Ontario Business Registry will eventually be cancelled (administratively dissolved) under the Business Corporations Act. The registrar gives notice before cancellation, but if the default is not corrected, the corporation ceases to exist as a legal entity.

Administrative dissolution does not wipe out the corporation's debts or extinguish contracts — it simply removes the corporation from the active registry. Creditors can still pursue claims, and directors remain exposed to their statutory liabilities even after dissolution.

A cancelled corporation can generally be revived by filing the outstanding returns, paying any applicable fees, and applying for a certificate of revival. Revival is retroactive — the corporation is deemed to have continued in existence as though it was never cancelled. However, the revival process takes time, can be expensive, and may cause disruptions if the corporation was party to active contracts or transactions during the gap period.

The practical lesson is to set a reminder for your annual return filing deadline, which is tied to your anniversary of incorporation. If you work with a lawyer or corporate services provider, they typically flag upcoming deadlines. A minor administrative step each year avoids a potentially disruptive cancellation.