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

June 10, 2016

Proposed Amendments to Thailand’s Trade Competition Act

Bangkok Post, Corporate Counsellor Column

Recently, the Cabinet passed a resolution that amends Thailand’s Trade Competition Act B.E. 2542 (1999). The draft amended law has since been submitted to the National Legislative Assembly for further consideration. Businesses should be aware of and prepare for the major changes ahead, as the newly proposed law may become effective at the end of this year.

The Office of Thai Trade Competition Commission (OTCC) is the main enforcer of Thailand’s Trade Competition Act. Overall, the Act aims to regulate fair competition among business operators in the following key areas:

  • Unlawful exercise of market dominance;
  • A merger which may form a monopoly, causing unfair competition;
  • Collusion which forms a monopoly, restricting competition; and
  • Catch-all unfair trade practices.

The amended Trade Competition Act introduces more stringent and extensive provisions as well as higher penalties for violations. The Act, as currently drafted, will introduce the following key amendments:

The definition of “Business Operator” will be broadened.  Under the draft, “Business Operator” now includes affiliate companies as well as group companies. If a company within a company group engages in anticompetitive practices, the OTCC would focus its investigation on the entire group of companies, not only the individual company.

Violations committed outside Thailand are punishable.  Any violations of the Act which are committed outside of Thailand, whether partly or fully, that have an anticompetitive effect on Thailand would be punishable in Thailand. As a result, companies that previously relied on territorial divides to engage in anticompetitive behavior from overseas which have an anticompetitive effect on Thailand could now be subject to punishment in Thailand.

OTCC must be notified of certain merger activities.  The OTCC will be notified of merger activities that may cause a substantive reduction in competition prior to the merger, and the relevant financial statements will be continuously filed at the OTCC for it to monitor the effect of the merger for three consecutive years.

Criminal penalties will be adjusted.  There will be criminal penalties for certain violations of the Act. A fine may amount to 20 percent of a company’s revenue in the year of the violation. This has the potential to result in significantly higher fines. If there is a violation of the OTCC’s order, administrative sanctions may be imposed and the OTCC will determine the fine.

The OTCC, at its discretion, may decrease the fines imposed on business operators that are not the main actors in collusion or restriction of competition causing severe impact to the market, if they cooperate with the OTCC to provide substantial evidence of the violation.

State enterprises will be subject to the Act.  Under the current Act, state enterprises were immune from the provisions of the Act. Under the amended Act, however, they will not be immune unless they fall within exceptions that are granted to state enterprises in the fields of national security, public benefit, common interest, and public utility.

State enterprises that are subject to the Act and engage in anticompetitive practices may incur both criminal and civil penalties. This is because the private sector would be competing with these state enterprises.

The definition of “Market Dominant Operator” will be reviewed periodically. Under the existing Trade Competition Act, the criteria to be classified as a “Market Dominant Operator” (MDO) are as follows:

  • Any Business Operator in any particular goods or services market which has a market share in the previous year of 50 percent or more and has a sales turnover of at least THB 1 billion; or
  • Any Business Operator falling within the top three Business Operators in any particular goods or services market which together have a market share in the previous year of 75 percent and sales turnover of at least THB 1 billion (unless one of these three Business Operators has a market share in the previous year of lower than 10 percent or sales turnover of less than THB 1 billion).

Under the draft law, this longstanding definition of “Market Dominant Operator” (MDO) will be reviewed and revised at least once every five years. The OTCC is empowered to determine the criteria to be classified as an MDO.

If a Business Operator is classified as an MDO, its obligations and scrutiny under the Act would be higher. For example, Section 25 of the Act, which prohibits unreasonably fixing or maintaining purchase or sale prices of goods or fees for services, only applies to MDOs. Business Operators should therefore keep abreast of the Act’s amendments to determine whether or not they are classified as an MDO, as they may be subject to more provisions.

Companies face much heftier fines for violations of Thailand’s Trade Competition Act. Business owners should therefore ensure that they fully understand and comply with the amended Act. The OTCC is undergoing structural reform to increase its impartiality and independence in terms of personnel. The prospect of an increased budget for the OTCC is also on the horizon, which will enable the OTCC to more effectively enforce trade competition laws and regulations in Thailand.

RELATED INSIGHTS​ 

February 20, 2026
The past year has been an important one for the Trade Competition Commission of Thailand (TCCT). With a right combination of commissioners bringing expertise in competition law, investigations, administrative procedures, court processes, and sector-focused industries, the regulator has pushed forward with stronger enforcement efforts and closer cooperation with both domestic and international stakeholders. In 2025 the TCCT participated in major international initiatives—including peer reviews conducted by the OECD and ASEAN. These efforts reflect Thailand’s ongoing ambition to elevate its competition law framework to meet international expectations and build trust among global communities. There was also significant momentum around potential amendments to the Trade Competition Act (TCA). Political parties, the TCCT, the private sector, and civil society all agreed that the 2017 law could benefit from clearer rules and more effective enforcement tools. Although a draft amendment passed an initial reading and moved to a subcommittee for revision, the process stalled following the dissolution of Parliament. At the same time, the TCCT invested heavily in strengthening its own internal capabilities. It expanded collaborations with organizations such as the OECD, ASEAN authorities, the EU, and counterparts in Japan and Australia. The TCCT also published sector-specific market studies, including on digital platforms and e‑marketplaces and on cold‑rolled steel. The regulator also shared draft guidelines aimed at regulating online platforms—although these have not yet been finalized. What’s Next for the TCCT? Looking ahead, the TCCT is set to keep building on the momentum it has created and be a more active, transparent, and practical regulator. It is likely to become even more visible in the public sphere as it steps up efforts to raise awareness about competition law, especially among businesses that may not traditionally follow or be familiar with such regulatory developments. Digital markets, including e‑commerce and online marketplaces, will remain a
February 16, 2026
On February 4, 2026, the Trade Competition Commission of Thailand (TCCT) released a draft notification outlining updated criteria and procedures for requesting advance decisions under section 59 of the Trade Competition Act (TCA). This draft is now open for public comment through the TCCT website until March 5, 2026. Section 59 of the TCA lets businesses proactively ask the TCCT to review whether a planned activity, such as a business strategy, marketing program, or other proposed conduct, could potentially violate the TCA. The major limitation is that this mechanism cannot be used for merger‑control matters. The new draft aims to make the process more accessible and user‑friendly. Key updates include allowing for electronic submission of requests and establishing a shorter notification timeframe, requiring the TCCT to explain any delay to the 60‑day review period within 7 days instead of the previous 15 days. For many businesses, this preliminary consultation tool is an effective way to reduce regulatory and competition‑law risks. Businesses that have taken advantage of this process have found that obtaining an advance decision can provide meaningful legal certainty, as the decision is binding once issued.
January 21, 2026
Spurred by global geopolitics and Canada’s Indo-Pacific Strategy, which aims to forge deeper ties with ASEAN, Canadian companies have been showing growing interest in Thailand and Southeast Asia in recent years. To understand the opportunities offered by the region, we sat down with Andrew Stoutley, a Toronto native and the chief operating officer of Tilleke & Gibbins, a leading Southeast Asian regional law firm with over 130 years of history in Thailand. Q: Why are Canadian companies looking at Thailand and Southeast Asia right now? A: Two reasons stand out. First, diversification has moved up the agenda. Many Canadian companies want options outside North America due to tariff volatility and policy uncertainty in the United States, as well as questions around the next Canada–United States–Mexico Agreement mandatory joint review. At the same time, the shift of global production from China to Southeast Asia is accelerating, driven by rising costs, geopolitics, and the need to avoid overreliance on a single market. As a result, Canadian companies are looking for a second production base or a regional hub, and Thailand and its neighbors are natural choices given their manufacturing depth, location, and established supply chains. Second, Canada’s own efforts in the region are gaining traction. The Indo-Pacific Strategy has led to more on-the-ground support, including larger trade missions, upgraded diplomatic posts, and new financing options. Export Development Canada (EDC) now has a presence in Bangkok, giving Canadian companies a direct line to financing and insurance in Thailand. There’s also steady progress on trade frameworks like the recently signed Canada–Indonesia Comprehensive Economic Partnership Agreement (which will come into effect pending domestic procedures), ongoing negotiations of a Canada–ASEAN FTA, and the exciting announcement about the launch of negotiations of a Canada–Thailand FTA. Together, these developments have the potential to make it much easier
January 14, 2026
Myanmar’s Ministry of Finance and Revenue has introduced new procedures allowing companies to temporarily export raw materials and semifinished goods for overseas processing before reimporting the finished products for domestic sale. The procedures are detailed in Notification No. 143/2025, which was issued on December 23, 2025, taking effect on February 1, 2026. The new procedures define outward processing as the temporary export of domestically circulating or manufactured goods for manufacturing, processing, treatment, or repair abroad, followed by reimportation. Core elements include the temporary export of the goods, the continuity and identifiability of the exported and reimported items, and the assessment of duties based on the value added abroad. Upon reimportation, customs duty, commercial tax, specific goods tax, and advance income tax are applied only to the foreign value added, rather than to the full value of the goods. No advance income tax applies at the time of export. Before these procedures, Myanmar lacked a unified outward processing system. The closest existing practice was the “repair and return” mechanism, used for goods such as machinery parts that required repair abroad. The definition covers a broader range of operations than simple repair. Eligible Goods and Shipment Points Outward processing is permitted only for goods that satisfy specific eligibility criteria. The scheme expressly excludes: Goods that are prohibited from export or import Goods that can be processed domestically within Myanmar Precious stones Goods that would lose their essential characteristics after processing Export and reimport activities related to outward processing must be conducted through designated ports, airports, or dry ports located within Yangon Region. Eligible Companies Only companies that are legally registered in Myanmar and authorized as exporters or importers—specifically, businesses holding a valid export/import registration certificate—are eligible to engage in outward processing activities. The Myanmar Customs Department serves as the governing authority