While the US–Thailand Treaty of Amity grants powerful and far-reaching rights, those benefits are not permanent by default. Treaty protection must be actively preserved through continuous legal compliance and careful corporate governance.

If U.S. ownership falls below the required threshold, or if effective control shifts—directly or indirectly—to non-U.S. nationals, Treaty protection is immediately lost. In such circumstances, the company may be deemed to be operating in violation of the Foreign Business Act, exposing it to regulatory sanctions, fines, or even suspension of business operations.

Key Areas of Elevated Risk

Certain corporate actions carry heightened legal risk and must be carefully reviewed in advance, including:

  • Transfers of shares or changes in shareholding structure
  • Capital increases or issuance of new shares
  • Appointment or removal of directors
  • Joint ventures or strategic partnerships with foreign investors

Even routine corporate changes can unintentionally disrupt Treaty eligibility if not properly structured and documented.

Regulatory Scrutiny and Enforcement

Treaty-protected companies are subject to close scrutiny by Thai authorities, particularly with respect to ultimate beneficial ownership and control. Regulatory reviews may be triggered by corporate filings, audits, or third-party complaints. A single compliance failure—whether procedural or substantive—can result in the loss of Treaty status and the legal right to continue operating in restricted business sectors.

The Importance of Continuous Legal Oversight

For these reasons, companies operating under the Treaty of Amity require ongoing legal supervision, not merely one-time registration assistance. Proactive legal management ensures that corporate actions align with Treaty requirements, regulatory expectations, and long-term business objectives.

With the right legal structure and continuous compliance strategy in place, the Treaty of Amity can remain a powerful and secure foundation for U.S. business operations in Thailand—transforming regulatory complexity into a sustainable competitive advantage.

How H&P Can Assist

At Herrera & Partners (H&P), we take pride in providing comprehensive legal advisory services to foreign investors. If you are considering establishing a business in Thailand but are unsure which legal strategy best suits your objectives, our bilingual team ensures clear communication and a smooth, efficient process from start to finish. We offer practical, legally sound guidance tailored to your specific business needs.

We provide end-to-end support, combining in-depth legal expertise with a hands-on, solution-oriented approach. Our goal is to ensure that our clients maximize the benefits of their legal rights while maintaining full compliance with all applicable laws and regulations.

If you would like to learn more about doing business in Thailand or explore how our firm can assist you, please contact us at the details below:

📧 Email: info@herrera-partners.com
🏢 Office in Bangkok: Herrera and Partners Co., Ltd.
                                        142 Two Pacific Place, 17th Floor, Sukhumvit Road, Klongtoey, Bangkok
📞 Telephone: +66 2 254 5600