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ARTICLE · 21 JULY 2026

Pre-Merger Notification Guide: Canada’s Competition Act

This comprehensive guide examines the pre-merger notification requirements under Canada's Competition Act, providing essential information for parties considering transactions that may trigger mandatory filing obligations. The guide outlines the thresholds, procedures, and compliance considerations that businesses must navigate when planning mergers and acquisitions in the Canadian market.

CanadaAntitrust/Competition Law

Canada's Pre-Merger Notification Regime

Canada's Competition Act provides that certain types of transactions (Notifiable Transactions) exceeding monetary and other thresholds – referred to as “party size” and “transaction-size” thresholds – must be notified to the Commissioner of Competition (Commissioner), who is the head of the Competition Bureau (Bureau), prior to closing. In the absence of an exemption or a waiver, parties to Notifiable Transactions must provide the Commissioner with prescribed information and comply with a specified waiting period before completing the transaction.

Parties that have completed a Notifiable Transaction without complying with these provisions may have committed a criminal offence and be liable for significant fines and court-ordered remedies, including dissolution of the transaction.

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The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

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