Thailand has amended its primary anticorruption law to provide robust new protections and direct assistance to whistleblowers. The Organic Act on Anti-Corruption (No. 2) B.E. 2568 (2025) was published in the Government Gazette on June 5, 2025, and came into force the following day. The amendment introduces a clear framework for safeguarding and supporting individuals who report graft. The amendment addresses a critical gap in the previous legislation by establishing formal mechanisms to protect and assist those who come forward with information. The key changes aim to shield whistleblowers from retaliatory legal and disciplinary actions, thereby encouraging more citizens to participate in exposing corruption without fear of reprisal. Key updates to the law are discussed below. Whistleblower Immunity The amendment clarifies and strengthens legal immunity by revising section 132 of Thailand’s original anticorruption law from 2018. Under the revised section, individuals who provide good-faith statements, information, evidence, or opinions to the National Anti-Corruption Commission (NACC) regarding offenses under its jurisdiction will be protected from civil, criminal, and disciplinary liability. This protection is explicitly extended to individuals who provide information to other state agencies tasked by the NACC to investigate corruption, such as the Public Sector Anti-Corruption Commission or the whistleblower’s own supervisors. Protection and Assistance A new section added to the law establishes a clear and swift process for activating protections. When the NACC learns that a whistleblower is facing legal complaints, criminal charges, or disciplinary action due to their report, the commission must review the matter and decide on providing protection within 15 days. If the NACC determines that the whistleblower acted in good faith, its office is required to provide immediate assistance. Legal and Financial Support Another newly introduced section outlines a wide range of assistance measures the NACC office can provide in civil and criminal cases

Thailand’s tax dispute resolution framework has undergone a significant transformation with the enactment of the Act Establishing the Tax Court and the Procedure for Tax Cases (No. 3) B.E. 2568. Published in the Government Gazette on May 27, 2025, the amended act will come into force on November 24, 2025, which is 180 days after its publication. The amended act marks a pivotal shift in the jurisdiction and procedures of the Tax Court, most notably by empowering it to adjudicate certain criminal tax cases for the first time. Background and Rationale The Tax Court was originally established in 1985 as a specialized forum to handle complex tax disputes, including those related to revenue, customs, and excise taxes. The creation of the Tax Court recognized the need for judicial expertise in tax law, given its technical and specialized nature. The latest amendment is designed to address procedural inefficiencies, modernize court processes, and align Thailand’s tax litigation system with international standards. The reform demonstrates Thailand’s commitment to enhancing the efficiency, transparency, and fairness of its tax dispute resolution mechanisms. Key Amendments and Provisions Six of the key changes in the amendment are highlighted below. Expansion of jurisdiction to criminal tax cases. The most significant change is the extension of the Tax Court’s jurisdiction to include criminal offenses under the Revenue Code, customs law, excise tax law, and other tax-related laws that may be specified by royal decree. New sections in the act explicitly grant the Tax Court authority to hear and decide criminal tax cases, so individuals and entities accused of criminal tax evasion or other tax-related crimes will now have their cases heard by judges with specialized tax expertise. The law also clarifies the Tax Court’s jurisdiction when a single act constitutes multiple offenses (some tax-related, some not) or when

Attorneys from Tilleke & Gibbins have updated the latest edition of Doing Business in Thailand, a Q&A-style guide from Thomson Reuters Practical Law that offers an overview of key legal considerations for companies operating in jurisdictions worldwide. The contribution outlines the country’s legal and regulatory framework for foreign investment and business operations and reflects the latest legislative developments. The chapter addresses the following core topics: Legal system: Structure of the courts and the codified nature of Thai law. Foreign investment: Business restrictions under the Foreign Business Act, sector-specific regulations, exchange control rules, and investment incentives. Business vehicles: Overview of partnerships, private and public limited companies, and other legal entities. Employment: Labor protections, employment contracts, foreign worker requirements, and termination procedures. Tax: Corporate and personal income tax, indirect taxes, and tax obligations for residents and non-residents. Intellectual property: Registration and enforcement of patents, trademarks, designs, and copyrights. Data protection: Key provisions of the Personal Data Protection Act and related compliance obligations. Competition law: Regulatory framework under the Trade Competition Act. Anti-bribery and corruption: Relevant legislation and enforcement mechanisms. E-commerce and digital business: Legal regime for online transactions and digital platforms. Marketing and advertising: Consumer protection laws and regulations affecting advertising and marketing practices. Product regulation and liability: Safety standards, liability regimes, and roles of enforcement authorities. Practical Law, a legal reference resource from Thomson Reuters, publishes a range of guides for hundreds of jurisdictions and practice areas. The insurance and reinsurance guide is a valuable resource for legal practitioners, covering numerous jurisdictions worldwide. To view the latest version of the guide, please visit the Practical Law website and enroll in the free Practical Law trial to gain full access.

On February 26, 2025, Thailand’s National Anti-Corruption Commission (NACC) issued a notification titled “Criteria for Individuals Living Together as Husband and Wife that Are Considered as De Facto Spouses (No. 2) B.E. 2568 (2025).” This new notification, published in the Government Gazette on March 7, 2025, took effect retroactively from January 22, 2025. Prior to this notification, the term “spouses” specifically included “individuals living together as husband and wife” without registering marriage, referring to similar language at the time in Thailand’s Civil and Commercial Code. However, it was unclear whether this term included same-sex and other nontraditional couples. After the Marriage Equality Act revised this language in the Civil and Commercial Code to only refer to “spouses” (with a gender-neutral Thai word), the NACC took the opportunity to issue a new notification that simply replaces any mention of “husband and wife” with “spouses,” thereby removing the ambiguity. As a result, this new notification covers same-sex de facto spouses of politicians and high-ranking officials. These spouses’ assets must now be declared together with the officials’ assets. Additionally, same-sex de facto spouses of state officials are prohibited from engaging in business with the Thai government that may present conflicts of interest. Importantly, the notification also impacts the interpretation of the Office of the Prime Minister’s (OPM) Regulation on the Giving or Receiving of Gifts by Public Officials B.E. 2565 (2022). In this regard, same-sex de facto spouses of government officials are now also prohibited from accepting gifts or other benefits related to official duties. This is because the OPM regulation references the NACC definitions when defining “family members” to include “de facto husband and wife.” Under the OPM regulation, public officials and their supervisors are strictly prohibited from permitting or condoning family members’ acceptance of gifts or other benefits related to