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

May 15, 2020

Decree 35 Provides Important Guidance on Vietnam’s New Competition Law

On March 24, 2020, the government of Vietnam issued Decree No. 35/2020/ND-CP detailing a number of articles of the Competition Law (Decree 35). Decree 35 took effect on May 15, 2020, and provides much-needed elaboration on various ambiguous issues under the 2018 Competition Law, which has been in effect since July 1, 2019. Notably, it clarifies the conditions triggering the restrictions on anti-competitive agreements and economic concentration (e.g., M&A transactions).

1. Definition of Relevant Market

“Relevant market” is a key term used for determining whether entering into an agreement with anti-competitive elements or carrying out an M&A transaction would be restricted or subject to any requisite conditions under Vietnamese law. The definition of relevant market is based on the determination of the relevant product market and the relevant geographical market. Decree 35 provides new guidance for such determination by the National Competition Commission (NCC), the new competition authority.

For determination of the “relevant product market”, Decree 35 sets out new regulations for determining the interchangeability or substitutability of goods and services:

  • In terms of characteristics – Under the previous regulations, it could be argued that the factors to be considered to determine interchangeability were only suitable for goods, and did not sufficiently cover the characteristics of services. Decree 35 has sealed this gap and stipulates factors which could capture the characteristics of both goods and services, including features, compositions, technical functions, side effects on users, users’ absorbability, and/or other specific attributes and qualities.
  • In terms of price – Decree 35 newly sets out that goods/services are considered substitutable if the difference in price between the goods/services in similar transaction conditions is not greater than 5%. However, no definition of “similar transaction conditions” is given, making the application of this provision less straightforward than it may seem.

For determination of the “relevant geographical market”, Decree 35 introduces some new factors for determining the boundaries of geographic areas, including consumption habits and cost and time for customers to purchase goods/services.

2. Prohibited Anti-Competitive Agreements

According to Articles 12.3 and 12.4 of the 2018 Competition Law, various types of anti-competitive agreements will be prohibited if they cause or are likely to cause a “significant anti-competitive effect” in the market. Decree 35 provides the clarification that an anti-competitive agreement would not be considered to cause or be likely to cause such “significant anti-competitive effect” in the following cases:

  • For enterprises in the same relevant market, the combined market share of the enterprises intending to participate in the agreement is less than 5%.
  • For enterprises intending to participate in the agreement from different stages in the same chain of production, distribution, and supply of specific goods/services, the market share of each participating enterprise is less than 15%.

3. Restricted M&A Transactions

M&A Transactions Subject to Notification Requirement

According to the 2018 Competition Law, if an intended M&A transaction reaches any of the thresholds set out by law, the enterprises intending to participate in such transaction must submit a notification to the NCC prior to carrying out the transaction. Decree 35 sheds more light on these thresholds by determining that the thresholds triggering the notification requirement include the following:

  1. Total assets in the Vietnamese market of each enterprise intending to participate in the transaction, or the group of affiliated companies of which such enterprise is a member, is worth VND 3,000 billion (approximately USD 126.3 million) or more in the financial year preceding the planned year of the transaction; or
  2. Total revenue in the Vietnamese market of each enterprise intending to participate in the transaction, or the group of affiliated companies of which such enterprise is a member, is VND 3,000 billion (approximately USD 126.3 million) or more in the financial year preceding the planned year of the transaction; or
  3. Value of the transaction is at least VND 1,000 billion (approximately USD 42.1 million); or
  4. The combined market share of the enterprises intending to participate in the transaction is at least 20% of the relevant market in the financial year preceding the planned year of the transaction. It is worth noting that this combined market share threshold under Decree 35 is stricter than the threshold set out under the prior notification regime (30% to 50%).

The foregoing thresholds would change if the enterprises intending to participate in the M&A transaction are credit institutions, insurance companies, or securities companies.

This notification requirement is also applicable to M&A transactions implemented outside of Vietnam. In this case, the thresholds under (i), (ii) and (iv) above would be applied.

Prohibited M&A Transactions

As mentioned above, under the 2018 Competition Law, if an intended M&A transaction causes or is likely to cause a “significant anti-competitive effect,” such transaction will be prohibited. Decree 35 elaborates on this provision by providing that M&A transactions will be permitted (will not be considered to cause or be likely to cause a significant anti-competitive effect) if the combined market share of all entities intending to participate in the transaction is below 20% of the relevant market.

If the combined market share of all entities intending to participate in the transaction is 20% or above, the NCC will further assess whether such transaction is prohibited based on established criteria, including mathematical formulas.

For more information on Decree 35, please contact us at [email protected].

RELATED INSIGHTS​ 

August 20, 2026
As part of its membership in Lex Mundi, Tilleke & Gibbins has released the latest edition of its Guide to Doing Business in Thailand, providing an overview of the legal, regulatory, and commercial considerations for companies establishing or expanding operations in Thailand. The 2026 edition offers practical insight into the country’s business environment, investment framework, and operational requirements. The guide covers a wide range of topics relevant to foreign and domestic investors, including: Investment incentives and promotion schemes Financial facilities and banking regulations Exchange controls and money transfers Import and export regulations Business structures and incorporation options Requirements for establishing a business Operational and compliance considerations Business cessation and insolvency procedures Employment and labor laws Taxation Immigration and visa requirements Prepared by Tilleke & Gibbins lawyers across multiple practice areas, the publication outlines key aspects of doing business in Thailand, including foreign investment restrictions, regulatory compliance obligations, corporate structures, employment requirements, and recent legal and economic developments affecting investors. The publication forms part of Lex Mundi’s Country Guides series, a global collection of jurisdiction-specific reference materials prepared by member firms around the world. Together, these guides help companies evaluate opportunities, compare regulatory environments, and plan international business activities across multiple markets. The full Guide to Doing Business in Thailand 2026 is available through the button below.
August 7, 2026
On July 31, 2026, the Trade Competition Commission of Thailand (TCCT) launched a one-month public consultation period on proposed regulatory guidelines for competition in three business segments: (1) digital platforms; (2) modern trade and credit terms; and (3) ride-hailing and on-demand delivery, including food delivery and mart/quick commerce. At the same time, the TCCT released a market report on ride hailing and on-demand delivery that is likely to influence the guidelines and their interpretation and enforcement. The consultation runs until August 31, 2026. Stakeholders have a limited window to submit practical, evidence-based input that may shape the next phase of Thailand’s regulatory framework for competition. Scope of the Consultation The public consultation targets updating existing guidance in three business sectors that have experienced transformative growth and structural change: Digital platforms: The TCCT has actively monitored this sector in recent years and has coordinated with other regulators, primarily the Electronic Transactions Development Agency (ETDA) and the Ministry of Commerce. In March 2026 the TCCT’s Guidelines on Multi-Sided Platforms and E-Commerce Businesses took effect, and in July the TCCT established a digital platform subcommittee to regulate and prevent unfair trade practices in digital platform businesses. This activity followed a TCCT market report on e-marketplace businesses in September 2025. Modern trade and credit terms: This sector was the focus of the TCCT’s 2019 Guidelines on Unfair Trade Practices between Wholesale and Retail Operators and Manufacturers or Suppliers (widely known as the “Modern Trade Guidelines”) , as well as its 2021 Guidelines on Unfair Trade Practices regarding the Credit Terms under which Small and Medium Enterprises (SMEs) Sell Products or Services to a Purchaser (also known as the “Credit Term Guidelines”), which were amended the following year. Ride-hailing and on-demand delivery (including food delivery and quick commerce): The TCCT published the Guidelines on
July 8, 2026
On July 7, 2026, the Trade Competition Commission of Thailand (TCCT) issued a press release announcing the establishment of two new subcommittees designed to intensify oversight of digital platforms and modern trade businesses. The formation of the digital platform subcommittee marks a significant escalation in competition enforcement following the TCCT’s Guidelines on Multi-Sided Platforms and E-Commerce Businesses, which took effect on March 25, 2026. Platform operators, sellers, and related service providers should expect heightened regulatory scrutiny and potential investigations into practices already flagged under the March guidelines. Two Dedicated Enforcement Bodies The first new body is the digital platform subcommittee—formally the Subcommittee on Supervision, Monitoring, and Prevention of Trade Conduct in Digital Platform Business. It is tasked with driving intensive oversight of digital platform businesses. It will coordinate with government agencies, the private sector, business operators, and other relevant stakeholders to supervise and prevent trade conduct that may affect competition, and to promote free and fair competition in the digital platform sector. The subcommittee will be composed of TCCT members and representatives from the Department of Internal Trade. The second body—the Subcommittee on Determining Guidelines and Action Plans Concerning Competition Conditions in Modern Wholesale and Retail Business—will study, analyze, and monitor market structure in modern wholesale and retail businesses, compile databases to analyze retail business concentration, assess impacts on small-scale operators, and propose supervisory measures for the retail sector. TCCT members will serve on the subcommittee alongside experts from government and private organizations, including the Office of Industrial Economics, the Office of Small and Medium Enterprises Promotion, the Thai SME Federation, and the Thai SME Council. Operational Impact for Industry Participants These subcommittees provide the TCCT with a focused mechanism to investigate various trade practices deemed unfair, and the TCCT has authority under the Trade Competition Act to issue cease-and-desist
April 15, 2026
On March 31, 2026, Vietnam’s government issued Decree 102/2026/ND-CP (Decree 102), which amends Decree 75/2019/ND-CP on administrative sanctions for competition law violations (Decree 75). Effective from May 20, 2026, the new decree introduces a number of significant changes aimed at strengthening enforcement, revising penalty structures, and broadening the range of remedial measures, primarily for violations related to economic concentration. Revised Penalties for Economic Concentration Violations Decree 102 significantly revises the penalties for violations related to economic concentration. Failure to notify an economic concentration; implementing an economic concentration before clearance Under the new framework, Articles 14 and 15 of Decree 75 have been amended to impose a range of monetary fines, rather than relying solely on percentage‑based penalties as under the previous regime, for violations involving the failure to notify an economic concentration or the implementation of an economic concentration prior to clearance. The fines range from VND 500 million to VND 1 billion for each enterprise participating in a concentration with combined assets, revenues, or purchase value below VND 3,000 billion in the preceding fiscal year, capped at 5% of the violating enterprise’s total turnover in the relevant market. For concentrations meeting or exceeding the VND 3,000 billion threshold across those same metrics, the fines increase to VND 1 billion to VND 2 billion per enterprise, also subject to the 5% cap. These differentiated thresholds allow penalties to better reflect the size of the transaction and its potential competitive impact. Non-compliance with conditional approvals Enterprises that do not implement or only partially implement the conditions specified in a conditional economic concentration approval decision face fines ranging from 1% to 3% of total turnover in the relevant market during the fiscal year preceding the violation. Decree 102 also adds a new remedial measure requiring enterprises to fully implement all conditions