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 5, 2020

Thailand’s Personal Data Protection Act: A Guide to the Partial Compliance Extension

In May 2020, the Thai Cabinet approved a royal decree granting a one-year exemption from certain provisions of the Personal Data Protection Act 2019 (PDPA), which had been scheduled to take full effect on May 27, 2020. The new decree has extended the effective date for a number of the law’s provisions to May 31, 2021.

Key Elements of the Extension

Under the decree, certain critical provisions of the PDPA are not enforceable against exempted businesses (see list below) during the extension period, including the following:

  • General requirements and obligations on data controllers. Specifically, the postponed enforcement covers consent requirements, notification requirements, establishment of lawful basis, requirements on the collection of personal data from other sources, and processing of minors’ personal data. The enforcement of a second list of requirements is also postponed, including observance of data subjects’ rights and data erasure or destruction requirements, the implementation of appropriate internal security measures to prevent unauthorized access (section 37 (1)), provision of data breach notifications, appointment of data protection officers (DPOs), filing complaints, and penalties.
  • The grandfather provision (section 95) is also within the scope of the extension. This means that personal data collected or processed during the extension period will not be subject to the requirements enumerated in the second list above when they come into force in 2021. Furthermore, this data can be retained and used after the extension period has lapsed, provided that doing so is within the original purposes stated for collecting and processing the personal data. It is especially important to note that the scope of the grandfather provision does not include disclosure of personal data or processing of personal data outside of the original purposes stated.

However, as required by section 4, data controllers must still implement a minimum level of security protection measures for personal data in accordance with the standards to be prescribed by the Ministry of Digital Economy and Society, expected later this year.

It should also be noted that the requirement for the regulator to issue supplemental notifications and regulations is not within the scope of the extension. The Personal Data Protection Commission (PDPC) is therefore expected to continue issuing these supplemental measures during the extension period.

Exempted Businesses

The list of exempted businesses, below, covers a wide range of sectors and industries, and applies regardless of location:

  • Agriculture
  • Industrial businesses
  • Commerce
  • Medical and public health businesses
  • Energy, steam, water, waste disposal, and related businesses
  • Construction
  • Repair and maintenance
  • Transportation, logistics, and warehousing
  • Tourism
  • Communication, telecommunications, computers, and digital enterprises
  • Financial, banking, and insurance enterprises
  • Real estate
  • Professional practice
  • Administration and support
  • Science and technology, academia, social welfare, and arts
  • Education
  • Entertainment and recreation
  • Security
  • Household operations and SMEs that cannot be classified
  • Government agencies
  • Foreign government agencies and international organizations
  • Foundations, associations, and religious and nonprofit organizations

What to Do Now

In addition to staying up to date on the issuance and implementation of supplemental notifications and regulations under the PDPA over the coming year, businesses should make use of the additional time to prepare for compliance. A sample framework for doing so is provided below.

Step 1: Identify the personal data currently possessed by the company

Estimated timeframe: 1–3 months

In this stage, it is important to understand the PDPA’s requirements and conduct self-assessments to identify an entity’s current and anticipated personal data processing activities. To identify the main processing activities, companies should answer the five Ws:

  • Who are the relevant data subjects and the responsible personnel?
  • What types of personal data are collected and processed, and what are the sources?
  • When is the personal data collected and updated, and how long is it retained?
  • Where is the physical and digital data stored and transferred to (i.e. within Thailand or overseas)?
  • Why is the personal data being collected or processed?

This should be a reported in an internal assessment to aid widespread understanding of the practice—especially the original purpose for collecting or processing the personal data—within the organization.

Gaps and mitigation measures should also be identified, including:

  • processing activities that require consent as the lawful basis;
  • processing activities that can rely on another lawful basis (e.g. “legitimate interest”);
  • relevant retention periods pertaining to the various types of personal data; and
  • list of data processors, the scope of their data processing activities, and relevant personal data pertaining to the activities.

Step 2: Close the gaps and monitoring for new subordinate regulations

Estimated Timeframe: 2-4 months for closing gaps, monitoring ongoing until May 31, 2021

In this stage, organizations should monitor the issuance and development of new subordinate legislation—including through public hearings—to ensure that they are aware of their compliance obligations. At the same time, it will be necessary to focus also on closing the gaps identified in Step 1 by implementing the necessary mitigation measures and putting measures in place to ensure operational compliance. This may include preparing the following:

Privacy policies for relevant data subjects. Where consent is identified as the lawful basis, consent forms must be prepared for the relevant data subjects (e.g. individual customers, employees, etc.).

  • A data processing agreement (or addendum) template to be arranged, proposed, and countersigned by the relevant data processors.
  • A record of processing activities.
  • A record of internal assessments where legitimate interest is to be relied upon as the lawful basis (noting that these should be carried out in consideration of organizational conflicts of interest).
  • Plans for a DPO or DPO team, depending on the size of the operation and quantity of personal data involved, and in accordance with the DPO qualifications prescribed by the PDPC.
  • A custom internal training program, addressing current gaps and relevant parties in the context of the new legal requirements.
  • Internal rules forbidding collection of personal data without justification or lawful basis, or that is not necessary for business operations. Any personal data of this type that is currently being processed should also be deleted at this time.

When the subordinate laws on data subject rights become publicly available, it will be necessary to examine the requirements and set up a process for managing requests to uphold data subject rights, as well as data controller and processor obligations under the PDPA.

Achieving Compliance on Schedule

By following these steps, organizations can ensure that they will be fully compliant when the extension period ends on May 31, 2021. The estimated timeframes of the various steps listed above can give an idea of how long each step will take, but the actual schedules should be determined based on the level of PDPA readiness within the organization, the scale of implementation, and any future developments of the subordinate legislation under the PDPA. Companies should work closely with local legal counsel to ensure that their compliance measures are on track, and will be effective when the law comes into force.

Tilleke & Gibbins will continue to monitor the development of the PDPA and provide updates as they emerge. If you have questions about the PDPA, or any other aspect of data compliance in Thailand, please do not hesitate to contact any member of the PDPA team, including Athistha (Nop) Chitranukroh at [email protected] or Nopparat Lalitkomon at [email protected].

RELATED INSIGHTS​ 

March 5, 2026
Thailand’s Securities and Exchange Commission (SEC) has filed a criminal complaint against a licensed digital asset broker, its overseas trading platform, and its executives for allegedly operating an unlicensed digital asset exchange targeting Thai customers. The case marks an escalation in the SEC’s enforcement efforts against unlicensed offshore platforms that attempt to serve Thai users through local licensed entities. Criminal Complaint On February 20, 2026, the SEC filed a criminal complaint with the Economic Crime Suppression Division against a local licensed digital asset broker, its overseas global trading platform, and its executives. The SEC alleges that the parties violated the Digital Asset Business Emergency Decree B.E. 2561 (2018) by cooperatively operating a digital asset exchange business on a cross-border basis since 2023 without the required SEC license. According to the SEC, the local broker promoted the overseas platform’s services to the public through Thai-language posts on social media channels, with services available exclusively to customers residing in Thailand. Access to the global platform was provided through the local broker’s website and mobile application. Customers who registered for the local broker’s services were automatically granted access to the global platform without having to undergo a separate identity verification process. The SEC also found that the local broker provided back-office system support services to the global platform. The SEC considers these activities to constitute joint operation of an unlicensed digital asset exchange. The former executives of the local broker are being held liable as the responsible persons during the relevant period. The SEC emphasized that the complaint initiates the criminal process, and the decision to prosecute or convict the accused parties will ultimately be made by law enforcement authorities and the criminal courts. Platform Blocking The SEC has also coordinated with the Ministry of Digital Economy and Society to block public
February 27, 2026
The Bank of Thailand (BOT) has officially implemented a new regulatory framework supervising systemically important retail payment systems (SIRPS), effective February 21, 2026, with PromptPay being the first payment system designated as a SIRPS. Under this new set of regulations, the BOT may designate payment systems under the Payment Systems Act B.E. 2560 (2017) as SIRPSs based on quantitative and qualitative assessments. Once a system is designated as a SIRPS, the operator becomes subject to expanded supervisory obligations beyond the general requirements of the Payment Systems Act. Enhanced Supervisory Requirements SIRPS operators must comply with a heightened supervisory regime across three key areas, outlined below. 1. Governance SIRPS operators must maintain robust and transparent governance structures, including: Balanced board composition, with at least one-third of the board comprising independent directors who represent stakeholders in the system (such as payment service providers, consumers, and experts). Independent directors may serve for no more than two consecutive terms. Subcommittees to assist the board in overseeing compliance, policy implementation, and operational strategy. Clear separation between executives responsible for risk and information security and those overseeing day-to-day business operations. Risk Management and System SecuritySIRPS operators must implement comprehensive risk management frameworks, including: Clear service agreements between the SIRPS operator and its direct participants (payment service providers who connect directly to the SIRPS), defining roles and responsibilities among stakeholders. These agreements must include obligations for direct SIRPS participants to supervise any indirect participants they onboard to ensure compliance with service agreements and business rules. A business continuity plan covering both IT and non-IT aspects, with annual review. The SIRPS must target service availability comparable to international payment infrastructures, including the ability to recover operations within two hours of a disruption and to maintain scalable operational capacity. Tools and controls to monitor and manage material or
February 26, 2026
Thailand is preparing to offer new tools for intellectual property enforcement as the Electronic Transactions Development Agency (ETDA) recently released for public consultation a draft notification requiring social media platforms to verify user identities and conduct know-your-customer (KYC) checks on advertisers. The draft Notification of the Electronic Transactions Commission on Measures to Prevent Technological Crimes for Social Media Service Providers, which is to be issued under the Emergency Decree on Measures for the Prevention and Suppression of Technological Crimes B.E. 2566 (2023), as amended in 2025, primarily aims to combat online fraud and technology-related crimes. However, its new obligations also provide IP owners with valuable tools to identify anonymous infringers. Key Regulatory Mandates The draft notification imposes several verification requirements on social media platforms operating in Thailand. These requirements also strengthen IP rights holders’ ability to identify anonymous infringers, as platforms must: Verify user identities through registered phone numbers and link all accounts to verifiable identities. Conduct KYC checks on advertisers, including individuals, companies, and any third-party payers. Perform heightened identity checks for high-risk or repeat offenders before publishing advertisements. Promptly remove content flagged by the Anti-Technology Crime Division and prescreen advertisements for prohibited or high-risk content. How IP Owners Can Use This Notification for Enforcement The phone number–based verification requirement enables IP owners to work more effectively with enforcement authorities in tracing individuals or entities responsible for infringing content. The comprehensive advertiser KYC obligations, including mandatory disclosure of third-party payment sources, create a clear audit trail even when bad actors attempt to obscure their identity through intermediaries or shell accounts. This traceability is essential for pursuing damages and dismantling organized counterfeit operations. The ETDA is now considering adjustments to the draft notification after receiving comments during the public consultation period, which ended on February 2, 2026. Following finalization
February 23, 2026
On February 17, 2026, Thailand’s Personal Data Protection Committee (PDPC) released its draft Guidelines on Personal Data Protection in the Development and Use of Artificial Intelligence. The draft guidelines, which translate data controller and data processor compliance obligations under the Personal Data Protection Act (PDPA) into measures tailored to AI development and deployment, are open for public comment until February 25, 2026. At a public hearing session on the draft guidelines held on February 19, the PDPC emphasized that its approach to AI is not to hinder innovation but to develop practical guidance supporting safe deployment while ensuring data protection. Although the guidelines are not legally binding, they indicate the regulator’s expectations and the likely direction of interpretation and enforcement. Scope of Application and Role of Stakeholders The guidelines will apply to all data controllers and data processors in Thailand, and to overseas data controllers and data processors whose data processing falls within the extraterritorial scope of the PDPA. The draft guidelines distinguish the roles of parties involved in AI deployment. Users of AI who determine the purpose of use and designate the input data, and retain outputs generated by the AI, are considered data controllers. In contrast, AI model providers or system integrators that process personal data under the instructions of the data controller are generally regarded as data processors. However, if an AI model provider utilizes user data for its own purposes, such as model fine-tuning or training, it may instead be classified as a data controller. Key Obligations for AI Data Collection and Use The basic principles of data processing under the PDPA must be maintained throughout the AI implementation lifecycle, from design to decommissioning, emphasizing accountability and privacy-by-design principles. The draft guidelines also stipulate the following: Data processing agreements (DPAs) should include model training prohibitions,