You are using an outdated browser and your browsing experience will not be optimal. Please update to the latest version of Microsoft Edge, Google Chrome or Mozilla Firefox. Install Microsoft Edge

March 2, 2020

The Development of Trade Competition Legislation in Thailand

Informed Counsel

The competition law regime in Thailand has recently undergone a number of significant changes and promising developments, starting with the implementation of the Trade Competition Act B.E. 2560 (2017) (TCA) on October 5, 2017.

In 2018, the Trade Competition Commission (TCC) passed major guidelines that clarified the criteria for considering fundamental offenses under the TCA (i.e., abuse of dominant position, hardcore cartels, non-hardcore cartels, and unfair trade practices), as well as the merger control regime under the TCA.

More promising still, the TCC proved to be a very active organization in 2019, issuing subordinate legislation and actively pursuing enforcement of the TCA. In August 2019, the TCC carried out its first enforcement in respect to three competition cases that were investigated by the previous commission. Summaries of these three precedent cases are provided below.

Abusing a Dominant Position in the Market

The first case, which occurred between October 2011 and July 2012, involved an energy drink manufacturer that had a dominant position in the energy drink market. The manufacturer was alleged to have prohibited its distributors from selling the products of its competitors. The TCC ruled that the energy drink manufacturer committed an offense by abusing its dominance, in contravention of the Trade Competition Act B.E. 2542 (1999)—the legislation that the TCA replaced. The TCC imposed aggregate fines of approximately THB 12 million, consisting of separate THB 6 million fines on both the company and the company’s director.

Unfair Trade Practices: Buyers

A case involving two buyers of agricultural products occurred during the enforcement of the 2017 version of the TCA. The TCC ruled that the buyers had engaged in unfair trade practices by threatening other prospective buyers and prohibiting them from purchasing agricultural products from sellers based in the same area as the offenders. The TCC imposed a THB 25,000 fine on the offenders, initially calculated as 10% of the offenders’ total turnover during the year of the offense (the total turnover was THB 500,000) and further reduced by half due to the offenders’ cooperation and in light of it being their first offense.

Unfair Trade Practices: Retail Business Operator

A retail-related case also occurred under the 1999 act. In 2011, a hypermarket operator launched a promotion by which customers could exchange a competitor’s coupon with its own coupon for double the value. The hypermarket operator was found guilty of engaging in unfair trade practices under section 29 of the 1999 act (now section 57  of the TCA) during January, July, and August of 2011. However, the TCC did not impose a criminal fine on the hypermarket operator, as the 1999 act had already been repealed when the TCC’s decision was made. The TCC also could not impose an administrative fine under section 57 of the current TCA, because this would have been contrary to the principle of non-retroactivity.

Subordinate TCA Legislation Issued in 2019

In 2019, the TCC issued more sector-specific guidelines, which aimed to prevent wholesalers, retailers, and franchisors from engaging in unfair trade practices with their business partners. The most recent of these was a notification that focused specifically on franchise businesses; this is covered in detail in another article in this issue of Informed Counsel.

Some months prior to this was a notification that dealt with determination of unfair trade practices in wholesale and retail businesses. The Notification Regarding the Guidelines for the Consideration of Unfair Trade Practices in a Wholesale and Retail Business came into force on July 20, 2019. It sets out the criteria for the consideration of unfair trade practices and provides a list of the types of conduct that wholesalers and retailers (e.g., hypermarkets, department stores, supermarkets, convenience stores, etc.) are prohibited from undertaking in their dealings with manufacturers or distributors (including importers). These types of prohibited conduct can be further classified into eight categories:

  • Unfairly fixing a low purchasing price from the manufacturer or distributor (including forcing the manufacturer or distributor to provide a discount for products already delivered);
  • Unfairly demanding economic benefits from the manufacturer or distributor;
  • Unfairly returning the purchased goods without a justifiable reason;
  • Unfairly setting contractual conditions in the consignment agreement;
  • Unfairly forcing the manufacturer or distributor to purchase goods or services without a justifiable reason;
  • Unfairly assigning duties to the personnel of the manufacturer or distributor without prior agreement or the consent of the manufacturer or distributor;
  • Unfairly refusing to accept products that are specifically ordered or made for the wholesaler or retailer (e.g., private brand, house brand); and
  • Other unfair trade practices that may cause damage to a manufacturer or distributor, such as delaying payment for the purchase of goods, refusal to deal, or delisting of stock.

Going Forward

In 2020, the TCC will focus on releasing more guidelines for specific regulated sectors such as the telecommunications, financial, insurance, and energy sectors. The TCC is also in the process of drafting additional guidelines for the consideration of mergers under the TCA. In terms of enforcement, the TCC has revealed that there are around 40–50 cases relating to offenses under the TCA that remain under investigation. As the TCC continues to actively shape the evolution of competition law in Thailand, it is anticipated that the Thai competition law regime will see more significant developments and positive changes in the years to come.

RELATED INSIGHTS​ 

January 13, 2026
On December 31, 2025, Myanmar’s Department of Trade introduced new rules for import and export license applications. The rules were issued in Announcement No. 4/2025, which took effect on January 1, 2026. Under the announcement, all applications for licenses must now be submitted and approved through the online Myanmar TradeNet 2.0 system. The announcement sets a maximum review period of 180 days for each application. If approval is not granted within this period, the application will be automatically canceled by the system. In addition, companies may submit only one application per calendar month for goods of the same type (same HS code), and only one license will be approved. Businesses involved in importing goods should review their planning and ensure compliance with the new restrictions.
January 9, 2026
On January 7, 2026, the Central Bank of Myanmar (CBM) announced a further relaxation of foreign exchange regulations through Notification No. 2/2026, with an effective date of January 1, 2026. This notification reduces the mandatory conversion requirement for exporters’ earnings in foreign currency into Myanmar kyat (MMK). Under the new notification, exporters are required to convert only 15 percent of their foreign currency export earnings into MMK at official CBM reference exchange rates, down from the previous required minimum conversion level of 25 percent. The adjustment provides exporters with more flexibility to manage foreign currency, improving liquidity for international transactions and reducing cash flow pressure. However, companies must still comply with the foreign currency conversion procedures and timelines set out in the CBM’s Notification No. 12/2022.
December 17, 2025
Tilleke & Gibbins has contributed the Thailand chapter to International Trade 2026, published by Chambers and Partners. International Trade 2026 provides an overview of international trade laws and regulations across major jurisdictions. The guide is designed as a practical reference for businesses, in-house counsel, and legal practitioners dealing with cross-border trade, customs, and regulatory compliance. The Thailand chapter examines key aspects of Thailand’s international trade framework, including: WTO membership, plurilateral arrangements, and free trade agreements Customs authorities, enforcement agencies, and customs regulations Trade sanctions regimes and compliance obligations Export controls, restricted persons, and licensing requirements Antidumping, countervailing duties, and safeguard measures Investment security mechanisms and regulatory oversight Subsidy and incentive programs for domestic production Standards, technical requirements, and sanitary and phytosanitary measures Geographical protections and other trade-related regulatory measures The chapter also highlights recent developments and pending regulatory changes affecting trade and investment in Thailand. Chambers’ International Trade 2026 guide brings together contributions from leading law firms worldwide, offering up-to-date, jurisdiction-specific insight into the evolving global trade environment. Tilleke & Gibbins also contributed the Vietnam chapter to International Trade 2026. A PDF of the Thailand chapter can be downloaded through the button below, and the full International Trade 2026 guide is available for free on the Chambers and Partners website.
December 17, 2025
Tilleke & Gibbins has authored the Vietnam chapter in International Trade 2026, published by Chambers and Partners. The guide offers comprehensive coverage of international trade regulation in leading jurisdictions and serves as a practical resource for organizations engaged in global trade and investment. The Vietnam chapter addresses a wide range of trade-related issues, including: WTO participation and regional and bilateral trade agreements Customs administration, enforcement, and applicable legal instruments Sanctions regimes and enforcement authorities Export controls, sensitive exports, and licensing requirements Antidumping and countervailing duty investigations and reviews Investment security mechanisms and notification requirements Subsidies, incentives, and measures affecting domestic production Standards, technical requirements, and sanitary and phytosanitary measures Geographical indications and other regulatory measures affecting trade In addition to outlining the current regulatory landscape, the chapter discusses recent developments and anticipated changes relevant to businesses trading with or operating in Vietnam. Chambers’ International Trade 2026 guide brings together contributions from leading law firms worldwide, offering up-to-date, jurisdiction-specific insight into the evolving global trade environment. Tilleke & Gibbins also contributed the Thailand chapter to International Trade 2026. A PDF of the Vietnam chapter can be downloaded through the button below, and the full International Trade 2026 guide is available for free on the Chambers and Partners website.