Jurisdiction(s):
United Kingdom

Key definition

Merger control definition

What does Merger control mean? Merger control is the review of mergers, acquisitions and certain joint ventures by competition authorities to prevent anti-competitive effects and to clear, condition or prohibit deals. In the UK, it is governed by the enterprise Act 2002 (as amended). The competition and markets authority (CMA) may review completed or anticipated deals where a 'relevant merger situation' arises: enterprises cease to be distinct and either the target’s UK turnover exceeds £70m or the parties meet/increase a 25% share of supply in the UK (or a substantial part). Notification is voluntary, but the CMA can call in transactions and impose...

Mexico merger control after 2025 reform: CNA regime, lower thresholds, 3-year ex officio review, shorter timelines, full-suspensory completion, higher fees, JV/foreign-to-foreign rules, penalties

Published by a LexisNexis Competition expert

Practice notes

NOTE—to check whether Notification thresholds in Mexico and worldwide are triggered, see further: Where to Notify.

1. Have there been any recent developments regarding the Mexican Merger control regime and are any updates/developments expected in the coming year? Are there any other ‘hot’ merger control issues in Mexico?

There have been significant recent changes to the Mexican merger control regime, comprising amendments to the applicable legislation and the establishment of a new competition authority. The governing statute is the Federal Economic Competition Law 2015 (Ley Federal de Competencia Económica, Competition Law 2015), as revised by a reform published in the Official Gazette on 16 July 2025, which came into force on 17 July 2025 (Publicación DOF 16 de julio de 2025 Edición Vespertina, Amendment 2025). Under the Amendment 2025, the National Antitrust Commission (Comisión Nacional Antimonopolio, CNA) is created as the new competition authority, and the powers and functions previously carried out by the Federal Economic Competition Commission (Comisión Federal de Competencia Económica, COFECE) and the Federal Telecommunications Institute (Instituto Federal de Telecomunicaciones, IFT) are transferred to it...

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Web page updated on 21/05/2026

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