Thailand Mandates Shareholder Verification for Company Amendments Involving Foreign Nationals

On 26 March 2026, the Department of Business Development (DBD) published a new administrative order in the Royal Gazette requiring mandatory in-person identity verification by Thai shareholders and directors whenever certain company amendments involve foreign participation. The order takes effect on 1 April 2026, giving affected businesses less than a week to understand its scope and assess their exposure.

This order represents the second phase of a regulatory push to eliminate nominee shareholders that began on 1 January 2026, when the DBD introduced three-month bank statement requirements for new incorporations involving foreign shareholders. The second order now extends substance-based verification from the point of incorporation to post-incorporation amendments, closing what the DBD has identified as the primary remaining loophole for circumvention.

What the Order Requires

The order targets two specific amendment scenarios. The first applies to registered partnerships where a proposed change would result in foreign partners holding less than 50% of total capital, in a partnership that was previously either all-Thai or foreign-majority. The second applies to limited companies where all existing authorized signatories are Thai nationals, and a proposed amendment would introduce a foreigner as an authorized signatory or director.

When either trigger is met, the registrar will notify the managing partner or directors who signed the registration application to provide a signed investment confirmation letter. This letter requires signatories to declare that all partners or shareholders have genuinely invested and paid their contributions, and that no Thai national is acting as a nominee. The form explicitly references Section 36 of the Foreign Business Act (FBA) and Sections 137 and 267 of the Thai Criminal Code, which govern false statements to officials. Signatories must also declare their average monthly income, creating an immediate point of comparison between stated earnings and claimed capital contributions

It is worth noting that the gazetted order itself does not explicitly require in-person attendance at the DBD. However, several Thai legal firms have interpreted the requirements as effectively mandating physical appearance, on the basis that the confirmation letter and its associated declarations would need to be executed before a registrar. BizWings will update this article once the DBD issues further guidance on the submission process

Why the Amendment Loophole Mattered

The January 2026 bank statement requirements applied primarily at the incorporation stage, requiring Thai shareholders to demonstrate that their capital contributions came from genuine, traceable fund transfers. While effective at screening new registrations, the measures left an obvious gap: companies that had already been incorporated under the previous, lighter regime could still restructure their ownership and signatory arrangements through post-incorporation amendments without facing the same scrutiny.

Practical Impact for Foreign-Owned Businesses

For companies whose Thai shareholders are genuine business partners with demonstrable financial capacity, the requirement adds procedural time, likely one to two additional weeks per amendment, but poses no fundamental threat. The in-person requirement applies only when one of the two triggers is met, not to every routine filing.

For companies whose structures rely on passive or nominal Thai shareholders, the situation is different. A Thai shareholder who cannot appear, cannot explain their capital contribution, or is unwilling to sign a sworn declaration referencing criminal liability becomes an immediate operational liability. The amendment will simply not be registered.

The criminal exposure attached to the sworn declaration is significant. Under Section 36 of the FBA, Thai nationals acting as nominees face imprisonment of up to three years and fines ranging from THB 100,000 to THB 1,000,000. Section 37 imposes identical penalties on the foreign principals.

What Foreign Business Owners Should Do Now

With the order published on 26 March and enforcement beginning on 1 April, the immediate priority is assessment. Foreign business owners operating through Thai-majority structures should determine whether any planned or anticipated amendments will fall within the scope of the new triggers. Where no amendments are imminent, there is time to review and plan. Where amendments are already in progress, they should account for the new requirements.

Whether a company's Thai shareholding arrangement can withstand substance-based scrutiny, requires honest evaluation regardless of the amendment timeline. A Thai shareholder who cannot explain their capital contribution or is unwilling to sign a confirmation letter referencing criminal liability becomes an immediate operational liability.

Where that evaluation reveals structural vulnerability, the established alternatives remain available. BOI promotion allows 100% foreign ownership with tax incentives in qualifying sectors. The US-Thailand Treaty of Amity permits American-majority-owned companies to operate on near-national terms. Industrial Estate Authority of Thailand (IEAT) free zones permit 100% foreign-owned manufacturing. A Foreign Business License provides direct authorization to operate in restricted categories. None of these can be arranged within days, but the enforcement trajectory is clear and the restructuring window, while narrowing, has not closed.

Check out the tool developed by BizWings to provide an overview of possible entities for foreign companies and investors when incorporating in Thailand:

Entity Selection Tool

This article is intended for general informational purposes only and does not constitute legal, tax, or professional advice. The regulatory measures discussed are based on publicly available sources current as of the date of publication and may be subject to further amendment, interpretation, or administrative guidance. Readers should not act or refrain from acting on the basis of this content without first obtaining independent professional advice specific to their circumstances. BizWings Thailand accepts no responsibility or liability for any loss or consequence arising from reliance on the information contained in this article.