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Antitrust, Competition and Trade

The CMS Antitrust, Competition and Trade (ACT) group in Budapest, Hungary, part of the fully integrated CMS global team, is one of the largest specialist competition and trade teams in the country.  

Given our size and extensive footprint, we can deal with all ACT matters irrespective of their geographic dimension. Where necessary, we cooperate with long-established contacts from our wider network of affiliated law firms around the world.  

We are specialists across the full range of Antitrust, Competition and Trade matters. We have expert sub-groups that specialise in specific areas in the wider competition and trade field, e.g. for State aid internal investigations and screening. We are also well-known as experts in many sectors of the economy. Our renowned sector specialisation encompasses automotive, consumer products/FMCG, construction, digital economy, energy/oil & gas, life sciences, telecommunications/media and transport, to name but a few.  

Our clients range from many multinationals who frequently use our team as their ACT law firm of choice for the entire region (e.g., in Europe or CEE), and a high number of medium-sized companies. Our dedicated competition and regulatory experts in Hungary can advise you on the entire range of contentious and non-contentious competition law issues. We regularly advise clients on competition matters across multiple jurisdictions in CEE, working closely together across the CMS Network, to deliver consistent and joined-up advice. CMS Budapest has a successful track record in representing clients before national authorities and courts, as well as the European Commission.  

The Competition Team in Hungary is considered to be among the best practices in the country and in CEE, with a stable, sector-focused team of specialists including former in-house lawyers, counsels of the Hungarian Competition Authority and economists. The team has achieved outstanding results in recent years in significant antitrust, abuse of dominance, merger control, consumer protections cases, private damages actions and state aid matters, while ranked highest by all legal directories (Elite at GCR, Band 1 at Chambers&Partners, and Tier 1 at Legal500).  

We use the most up-to-date technical and AI tools to support our business in Hungary and abroad.  

We hold a renowned annual EU competition law conference which has become a feature in the Brussels calendar. We put out regular case law updates on Hungarian, European and international competition and trade developments on our Law Now service. Our monthly EU law webinars are attended by in house counsel from around the world. And our group is steered not just by a management committee of partners, but also by an active associates’ group that keeps us innovating to serve clients.

Our specialist practice areas

Highlighted experience

  • Microsoft

    on successful commitment negotiations with the HCA concerning the AI-powered Copilot, previously known as Bing.

  • Viagogo

    in a competition investigation initiated by the HCA in December 2019 relating to an alleged infringement of the prohibition of unfair commercial practices regarding consumers, and representation before Hungarian courts relating to the challenge of the HCA’s decision.

  • The Hungarian Branch of a German Retailer

    in multiple competition control proceedings launched by the HCA, including both antitrust and consumer protection investigations.

Awards & Recognitions
01
  • Quote
    "The team has a strong ability find the necessary facts and focus points to ensure the proper communication with the authorities. The administration is outstanding and the communication is flexible."
    Chambers Europe, 2025
  • Quote
    ”The competition law team of CMS is very highly professional. They closely monitor the market in Hungary and on the EU level, too. Besides the support in individual cases, they are very supportive of giving training for different colleagues in our company.”
    Legal 500, 2025
  • Quote
    "I fully rely on CMS with complex and sophisticated matters - the lawyers investigate the issue from every possible angle and deliver a full solution."
    Chambers, 2023
  • Quote
    "[The competition team’s] client management is exceptionally great; they are able to make me feel that I am the only and most important client of the office."
    Chambers Europe, 2022

Events

  • Hungary
    10 Feb 2026

    Simplify to Compete: AI Regulation and Compliance

  • Hungary
    20 Feb 2026

    AI, Data Act and GDPR: current compliance issues

  • Hungary
    03 Mar 2026

    IP Insights webinar series 2026

  • Hungary
    06 Mar 2026

    Shareholders’ Agreements in practice

  • Hungary
    19 Mar 2026

    CMS Nordic Health Summit

  • Hungary
    20 Mar 2026

    The legal labyrinth of bank fraud

  • Hungary
    23 Mar 2026

    CMS at PTMG Spring 2026

  • Hungary
    27 Mar 2026

    Cyber sovereignty – the road to sovereign cloud services

  • Hungary
    08 Apr 2026

    CMS at Fordham IP & Policy Conference

  • Hungary
    10 Apr 2026

    About cross-border conversions, mergers and divisions

  • Hungary
    17 Apr 2026

    Pharmaceutical industry trends: evergreen topics and emerging challenges, with a focus on promotion,...

  • Hungary
    21 Apr 2026

    On the Pulse webinar series 2026 - Spring

  • Hungary
    24 Apr 2026

    Overview of the new Consumer Protection Act: outlook and practical considerations

  • Hungary
    08 May 2026

    Experience with restructuring bond transactions and fiduciary asset management (trust structure)

  • Hungary
    22 May 2026

    Sale of a company or assets in insolvency proceedings

Local market knowledge. Global outlook

We provide future-facing legal advice to help your organisation thrive. Combining local market knowledge and a global perspective, and with lawyers in locations worldwide, your organisation benefits from the expertise it needs, even across borders.

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