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

//
//
Tax

Tax

Key Contacts

Cambodia

Laos

Myanmar

Thailand

OVERVIEW

Strategic tax planning across Southeast Asia—locally informed, regionally connected.

Southeast Asia presents a diverse and rapidly evolving tax landscape, shaped by varying regulatory regimes, shifting policy priorities, and increasing scrutiny from local tax authorities. For companies operating across borders in the region, managing tax exposure and ensuring compliance requires not only technical expertise but also a nuanced understanding of local practices and regional dynamics.

With offices in Cambodia, Indonesia, Laos, Myanmar, Thailand, and Vietnam, Tilleke & Gibbins’ regional tax team is uniquely positioned to support clients across Southeast Asia. Our integrated approach combines deep local knowledge with cross-border coordination – enabling us to deliver practical, commercially focused tax solutions that align with our clients’ strategic goals.

We advise on a full spectrum of tax matters, including corporate and personal income tax, withholding tax, VAT and indirect taxes, customs duties, transfer pricing, and international tax planning. Our team works closely with clients to structure investments, optimize tax efficiency, and mitigate risks in complex transactions and regulatory environments. Whether entering new markets, restructuring operations, or navigating cross-border tax issues, we provide clear and commercially-sound advice that helps clients succeed across Southeast Asia.

Experience

  • Advised a global leader in the heavy industries sector on various tax matters related to the supply and installation of a production platform, bridges, and a flare tower in a petroleum concession (total contract price was approximately USD 1,000,000,000).
  • Advised a group of Japanese industrial conglomerates on tax matters related to the construction of a railway project for the State Railway of Thailand. The project value is estimated to be over THB 30 billion.
  • Advising a leading hospitality property holding company in reviewing the revenue tax assessment on one of their affiliated companies with extensive land and property holdings in Thailand.
  • Acted as the exclusive Thai tax advisor to a fully integrated oil and gas corporation on various tax matters, including customs, VAT, and income tax matters and tax planning for the sale and distribution of new petroleum products in Thailand; transfer pricing issues for various sale and service transactions with its parent company; permanent establishment issues related to the sale of goods by its foreign affiliates in Thailand; and the proper structure for capital increase and loan payments to its parent/affiliate.
  • Acted as the exclusive tax advisor for a leading automaker. We advised the client on various tax matters, including tax implications and tax planning for tool sharing and various domestic and cross-border transactions with other company units, tax planning for various business operation and sales promotion plans, transfer pricing issues, and Free Zone implementation. As a result of our advice in these areas, our client was able to realize significant tax savings.
  • Advised a leading international pharmacy-led health and beauty group, which operates more than 3,200 health and beauty retail outlets around the world, on structuring corporate relationships with major department stores in Thailand, transfer pricing issues, and cross-border transactions with other company units abroad.
  • Advised a major bank in the UK, with significant retail and commercial operations in more than 50 countries around the world, on the legal and tax implications of the Long Term Cash Plan, the Private Pension Plan, and the Executive Share Award Scheme for executives who are resident in Thailand. This involved the review of hundreds of documents in relation to these executive plans. We also provide yearly updates on the legal and tax implications of these plans.
  • Acted as the Thai tax advisor to a land-based component of a leading liner shipping company on business structure, tax planning, sale of assets, and transfer pricing issues.
  • Advised one of the world’s top furniture retailers on preferential duty concessions and tax matters related to its franchise business in Thailand and sale transactions between related companies in the group.
  • Advised an international technology company on operating a representative office in Vietnam, including advising on the scope of work of a representative office, employment matters, tax matters, and government filing requirements. We prepared Vietnamese and English versions of labor contracts.
  • Advised a Singaporean company on setting up a representative office in Vietnam and handled all post-licensing matters, including providing tax and banking advice.
  • Provided guidance to multinational corporations on tax planning and structuring business projects in Thailand, transfer pricing regulations, tax implications of financing transactions, negotiating/appealing decisions of the Revenue Department, and other tax‐related issues.

PROFESSIONALS

RELATED INSIGHTS

September 17, 2025
Thailand’s Ministry of Finance has introduced a five-year personal income tax exemption on capital gains from the disposal of cryptocurrency or digital tokens. The Ministerial Regulation No. 399, published in the Government Gazette on September 5, 2025, offers the personal income tax exemption for transfers occurring between January 1, 2025, and December 31, 2029. The ministerial regulation was enacted to promote Thailand as a global financial center and digital asset business hub while encouraging increased domestic investment in digital assets. Key Conditions The exemption, which covers capital gains from cryptocurrency and digital token disposals during the specified five-year period, applies only to individuals. Companies that trade in digital assets are not eligible for this tax exemption. With the tax holiday set to expire in 2029 (unless extended), individual traders should plan ahead for postexemption taxation to ensure full compliance with Thailand’s personal income tax requirements. Proper documentation of digital asset transactions during the exemption period will be essential for future tax compliance. For more details on this tax exemption, or on any aspect of Thailand’s tax law and regulations, please contact Saravut Krailadsiri at [email protected] or Papavarin Sarawongsuth at [email protected].
July 7, 2025
On June 20, 2025, Cambodia’s Ministry of Economy and Finance issued Instruction No. 19116 to clarify when board members and company directors must receive salaries and pay payroll taxes. Board members and company directors who are not considered employees are subject to a withholding tax. This category consists of people who complete services for a nonresident individual and people who perform independent work for a company in Cambodia. Board members and company directors who are considered employees, including those appointed by a foreign head office to temporarily manage a company in Cambodia, must pay payroll taxes on any salary they receive, regardless of whether they are paid by a local or foreign branch of the company. The above obligations apply regardless of whether the person has a work permit. Board members and company directors are exempt from paying payroll tax if they: Are not present and not performing a regular management role at the company despite being registered on the company’s statutes or patent tax card; Participate only in board meetings and occasional shareholder meetings; and Do not receive a salary from a company in Cambodia. Overall, this instruction provides an important clarification regarding the tax obligations of board members and company directors. Companies should pay attention to the classification of their board members and directors and be mindful of the exemption.   This article was written with the assistance of Tilleke & Gibbins interns Amelia Gemma Erickson and Amrin Keat.
July 2, 2025
On June 17, 2025, Cambodia’s Ministry of Economy and Finance issued Instruction No. 18574 on Tax Obligations for Share Premiums to clarify that enterprises are not required to pay any income tax on share premiums that meet the conditions set out in the instruction. As outlined in the relevant provisions of the Law on Taxation (Royal Kram No. NS/RKM/0523/004) and Prakas No. 578 MEF.PrK.GDT on Tax on Income, taxable income is the difference between an asset’s value at the beginning and end of a period. This calculation deducts capital contributions, which are not taxable. A share premium is the amount of money that a company receives in excess of the par value of a share when the company issues new shares to a shareholder through a share subscription. In other words, share premiums are capital contributions made by shareholders into the equity of the company and, as a result, are not taxable. However, the government may nevertheless view share premiums as taxable if the company fails to meet certain legal conditions. Cambodian law requires share subscriptions to be properly recorded in the company’s accounting books and supported by documentary evidence. The recent instruction states that if an enterprise does not have proper documentation, any increase in equity, such as a capital increase through share premiums, will be treated as taxable income in accordance with the law. The instruction provides the following example: Enterprise A issues 200,000 new shares to an investor. The shares were registered with a par value of KHR 4,000 per share and were sold for a sale price of KHR 10,000 per share. The share premium of KHR 1.2 billion, which is calculated by subtracting the total par value (KHR 800 million) from the total value of the new capital (KHR 2 billion), is a capital
June 11, 2025
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
AWARDS & RANKINGS
March 19, 2026
Tilleke & Gibbins has been recognized in 17 categories at the 2026 Thailand Law Firm Awards from Asia Business Law Journal (ABLJ), up from 10 categories in 2025. The awards highlight leading law firms in Thailand across a broad range of practice areas, as well as overall firm performance. This year, Tilleke & Gibbins was named a co-winner in the Best Overall Law Firm category as well as in the following practice-specific categories: Artificial Intelligence Aviation Blockchain & Digital Assets Competition & Antitrust Data Compliance & Cyber Security E-Commerce, Digital Trade & Platform Regulation ESG (Environmental, Social, and Governance) Fintech Healthcare & Life Sciences Insurance & Reinsurance IP Litigation IP Prosecution Labour & Employment Private Equity & Venture Capital Shipping & Maritime Technology, Media & Telecommunications The awards are determined through ABLJ’s independent research, which considers recent work, client feedback, and market standing. The annual Thailand Law Firm Awards recognize firms demonstrating strong performance and breadth of expertise across key practice areas. For more details and the full list of winners, please visit the ABLJ website.
March 9, 2026
Tilleke & Gibbins has been shortlisted in multiple firmwide and individual categories at the Legal 500 Southeast Asia Awards 2026, including Regional Firm of the Year, reflecting the firm’s work across Southeast Asia and the continued development of its regional practices. In the individual categories, Aye Thuzar Hlaing has been shortlisted for Myanmar Associate of the Year (Corporate and M&A), and Linh Duy Mai has been shortlisted for Vietnam Associate of the Year (Intellectual Property). Tilleke & Gibbins has also been shortlisted in the following firm categories: Regional Firm of the Year Thailand – Law Firm of the Year Thailand – Law Firm of the Year (Litigation) Myanmar – Law Firm of the Year Vietnam – Law Firm of the Year Vietnam – Law Firm of the Year (Labor and Employment) Laos – Law Firm of the Year The winners will be announced on April 30, 2026, at the Legal 500 Southeast Asia Awards ceremony in Singapore. To browse the full shortlist for the Legal 500 Southeast Asia Awards 2026, please see the Legal 500 website.
March 2, 2026
Tilleke & Gibbins has been shortlisted for two prestigious recognitions in the Chambers Asia-Pacific and Greater China Region Honours 2026. The firm received nominations for both Thailand Firm of the Year and Vietnam Firm of the Year. The Chambers Asia-Pacific and Greater China Region Honours recognize preeminent law firms demonstrating outstanding work, impressive strategic growth, and excellence in client service across the region. The Thailand nomination marks the firm’s sixth consecutive shortlisting and twelfth since 2010. For Vietnam, this is the third consecutive year the firm has been recognized. The winners will be announced at an awards ceremony in Hong Kong on May 28, 2026. To learn more about the Chambers Asia-Pacific and Greater China Region Honours 2026 and browse the full list of nominations, please visit the Chambers and Partners website.
January 15, 2026
Tilleke & Gibbins has demonstrated continued excellence across all six jurisdictions where the firm operates in the 2026 edition of the Legal 500 Asia-Pacific rankings. The recently released rankings showcase the firm’s outstanding performance with 29 practice area recognitions and 34 individual rankings—an increase from 30 individual recognitions in 2025.