The global trade environment for Thai exporters in 2026 has shifted significantly. Recent enforcement developments in both the United States and the European Union show a clear shift in trade policy: regulators are no longer focused solely on tariff levels, but also on whether products genuinely originate where exporters claim they do. Adding to this complexity, the US Supreme Court’s February 2026 decision striking down the use of the International Emergency Economic Powers Act (IEEPA) to impose tariffs has upended the legal basis for a major pillar of US tariff policy, creating significant legal and commercial uncertainty for exporters worldwide, including in Thailand. For Thai companies integrated into regional supply chains, this change carries material implications. Although the IEEPA-based US reciprocal tariffs have been struck down, intensified circumvention enforcement continues under separate legal authorities, and the administration has signaled its intent to reimpose tariffs under alternative statutory frameworks, while EU authorities are using anti-circumvention investigations where trade patterns shift. In both jurisdictions, the decisive issue is whether manufacturing in Thailand constitutes substantial transformation under applicable rules of origin. Such origin determinations increasingly drive duty exposure, audit risk and commercial disputes. In 2026, the ability to defend a product’s Thai origin is not merely a procedural step, it is central to preserving market access in the US and EU. Impact Of US Circumvention Enforcement and an Uncertain Tariff Landscape Following the 2025 Framework for an Agreement on Reciprocal Trade, Thailand saw a shift in its tariff relationship with the US. A substantial range of Thai-origin goods were subject to a 19% reciprocal tariff under the IEEPA. However, the Supreme Court’s ruling invalidating the use of IEEPA for tariffs has removed the legal basis for that rate. The Administration has indicated it intends to pursue replacement tariffs under other statutory authorities,

Thailand’s Anti-Corruption Cooperation Committee has issued a major update to the anticorruption standards required for private entities engaging in high-value state projects. The update, titled “Announcement re: Procurement Limits and Minimum Anticorruption Standards (No. 2),” replaces and amends key provisions of the original announcement dated September 25, 2024. Published in the Government Gazette on April 10, 2026, the new rules take effect on May 10, 2026, and apply to projects valued at more than THB 300 million (approximately USD 9.3 million). The key amendments to the anticorruption standards are detailed below. Expanded Definition of Conflict of Interest The 2026 regulation significantly broadens the scope of what constitutes a conflict of interest compared to the 2024 version, which focused primarily on basic kinship and business ties. Under the new rules, a conflict of interest includes using one’s position or authority to seek benefits for oneself, a group, close associates, or business, including through business relationships, kinship ties, or relationships with spouses or individuals living together as partners without marriage registration. The 2026 announcement also introduces specific examples that were largely absent from the 2024 text, such as holding shares in similar businesses that submit proposals for the same project, or submitting proposals for projects in which a relative, spouse, or unregistered partner is an “involved party” in that procurement. Continuous Compliance: The “Final Payment” Rule Under the 2024 rules, the coverage period for anticorruption policies was less strictly defined. The new regulation mandates a continuous timeline: policies or certifications must remain effective from the date of bid submission until the contractor receives the final payment installment under the contract. If a certification or policy is set to expire before the final payment, the contractor must submit a new self-audit form and supporting evidence to the state agency before the original

In March 2026, the United States Trade Representative (USTR) initiated two significant investigations under Section 301(b) of the Trade Act of 1974 that directly affect Thailand. The first investigation examines overproduction in manufacturing sectors caused by government support or policies that distort normal market conditions across 16 economies, including Thailand. The second investigation, launched the following day, targets 60 economies, also including Thailand, for alleged failures to impose and effectively enforce prohibitions on the importation of goods produced with forced labor. Taken together, these investigations represent a significant escalation in US trade enforcement and create substantial risk for Thai exporters, manufacturers, and businesses with supply chain connections to the United States. The investigations are moving on an accelerated timeline, with the USTR indicating that potential trade measures, including tariffs, could be imposed as early as July 2026. This article provides an overview of the investigations, highlights their specific implications for Thailand, and outlines practical considerations for affected businesses. Section 301 as a Trade Enforcement Tool Section 301 of the Trade Act of 1974 gives the USTR authority to investigate foreign acts, policies, or practices that are considered unreasonable or discriminatory and that burden or restrict US commerce. If the USTR concludes that such practices exist, the statute allows a wide range of remedial measures, including the imposition of tariffs, nontariff trade restrictions, and negotiated agreements with foreign governments. Unlike other trade authorities, Section 301 does not set limits on the level of tariffs or the duration of measures, giving the USTR considerable flexibility to address perceived trade imbalances or unfair practices. Historically, Section 301 investigations take up to a year to complete. In this instance, however, the USTR has indicated that the investigations will proceed on a much faster timetable, with an unofficial target of concluding by July 2026.

On March 30, 2026, Thailand’s Customs Department announced a strategy to raise import duties on a broad range of consumer goods—including plastic items and electronics accessories—to their maximum statutory ceilings, which often sit at 30% or 40%. Many of these goods currently benefit from promotional or incentive rates as low as 5%. For importers, e-commerce platforms, and logistics providers, this development demands immediate attention. While these increases generally require cabinet approval, they do not require full parliamentary amendment of the Customs Tariff Decree B.E. 2530, as the Customs director-general and the finance minister hold delegated authority to adjust rates within existing statutory bounds. Businesses should not assume that the legislative process will provide significant lead time before higher rates take effect. Death of the De Minimis: Abolishing the THB 1,500 Loophole This “ceiling-rate” policy, which is designed to equalize the landed cost of foreign goods with the domestic production costs of Thai manufacturers, builds on a sweeping set of customs reforms that have already begun to reshape Thailand’s trade environment. The foundation of this new regime was laid on January 1, 2026, when Thailand formally abolished the longstanding THB 1,500 duty exemption for small imported parcels under Customs Notification No. 219/2568. Every imported item is now subject to VAT and applicable import duties for its declared value, regardless of parcel size or transaction amount. By narrowing the scope of exemptions previously granted to low-value goods under the Customs Tariff Decree B.E. 2530, the government has made clear that the era of tax-free cross-border micro-imports is over. Three-Phased Strategy and Legal Modernization The March 30 announcement is the second phase of a three-part regulatory roadmap: Immediate enforcement: The removal of the THB 1,500 loophole and the imposition of VAT on all parcels, effective January 1, 2026. Tariff realignment: The current