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March 6, 2025

Thailand Extends Jurisdictional Powers of Tax Court to Criminal Tax and Customs Disputes

On February 18, 2025, the Thai Senate approved an amendment to the Act on the Establishment of and Procedures for the Tax Court. This follows the July 2024 approval by the Thai cabinet and subsequent preparation of supporting secondary legislation. This important amendment to procedural law, once it takes effect, will extend the exclusive jurisdictional powers of the Tax Court to all criminal tax, customs, and excise tax claims in addition to the court’s existing jurisdiction over all such civil claims.

The amendment, while now formally approved by the legislature, is awaiting the king’s signature and will take effect 180 days after its publication in the Government Gazette. Based upon its projected publication date, the amendment will likely take effect by the end of the third quarter of this year.

This development is set to offer a more sophisticated Tax Court litigation process for highly specialized and often complex criminal tax and customs claims, something with which Thailand’s traditional criminal courts have struggled. It also ensures that all tax and customs matters are adjudicated before the same court, saving time, party costs, and judicial resources. This appears likely to result in more consistent adjudication of criminal tax and customs disputes, a benefit for the Thai government and party litigants alike.

Any ongoing criminal tax and customs claims already commenced with the respective criminal courts on the date on which the amendment becomes effective will remain under the exclusive jurisdiction of those criminal courts. The Tax Court will have exclusive jurisdiction over all other claims.

This important legislative change offers those managing or otherwise facing civil and/or criminal Thai tax or customs disputes the opportunity to more effectively plan and execute a uniform defense strategy before a single, qualified forum.

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