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    The content on this page is for general educational purposes and does not constitute legal advice. Every legal situation is unique. For matters involving investigation, arrest, litigation, or formal proceedings, consult a qualified legal professional.

    Competition & Antitrust

    Competition & Antitrust Overview: Introduction to Thai Law

    Comprehensive introduction to competition & antitrust principles, historical development, and key legislation governing competition & antitrust matters in Thailand.

    Last updated: February 2026

    Introduction to Competition & Antitrust

    Competition in Thailand is governed by the Trade Competition Act B.E. 2560 (2017), enforced by the Office of Trade Competition Commission (OTCC). The Act prohibits the abuse of a dominant market position, anti-competitive agreements between competitors (cartels, including price-fixing and bid-rigging), and unfair trade practices, and it introduces merger control requiring notification of, or prior approval for, mergers that meet prescribed thresholds. State enterprises and certain regulated sectors have specific treatment. Breaches can carry administrative fines, criminal penalties for hard-core conduct, and civil liability to those harmed.

    This comprehensive guide provides an overview of competition & antitrust in Thailand, covering key principles, relevant legislation, and practical considerations for anyone navigating the Thai legal system.

    Key Principles

    Legal Framework

    Thai competition & antitrust operates within a civil law tradition, with codified statutes forming the primary source of law. Judicial precedent plays a secondary role.

    Court Jurisdiction

    Competition & Antitrust matters are heard in the Courts of First Instance, with appeals to the Court of Appeal and Supreme Court (Dika Court).

    Statutory Basis

    Primary legislation includes Trade Competition Act B.E. 2560 (2017) and Notifications of the Trade Competition Commission (merger thresholds, guidelines), along with relevant royal decrees and ministerial regulations.

    Constitutional Protections

    The Thai Constitution guarantees fundamental rights that apply to all competition & antitrustproceedings, including due process and equal protection.

    Key Legislation

    Trade Competition Act B.E. 2560 (2017)
    Notifications of the Trade Competition Commission (merger thresholds, guidelines)

    Scope & Application

    Competition & Antitrust in Thailand applies to:

    • All persons within Thai territory (Thai and foreign nationals)
    • Conduct occurring within Thailand's borders
    • Certain extraterritorial conduct by Thai nationals
    • Matters falling within the subject matter jurisdiction of relevant courts

    More Competition & Antitrust Topics

    When Legal Representation Matters

    If you need assistance with competition & antitrust matters in Thailand, professional legal advice can help protect your interests.

    Anglo Siam Legal provides experienced legal services across Thailand for both Thai nationals and foreigners.

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