Thailand has expanded its ongoing investigation into illegal nominee businesses, adding 200 more firms to its target list. According to reports from the Bangkok Post, this latest expansion increases the legal risks for foreign business owners relying on traditional joint-venture structures.

The widening probe follows a recent, highly visible crackdown focused on Bangkok's Huai Khwang district, an area known for its dense concentration of foreign-owned enterprises.

While the headline numbers sound intimidating, the actual enforcement rate remains relatively low. According to The Thaiger, Thai authorities have flagged nearly 47,000 companies for potential nominee violations, but have only formally charged 852 to date. However, the addition of 200 specific new targets signals that authorities are actively pursuing cases they believe they can win.

What this means for foreign business owners

For decades, many expats have relied on the "51-49" company model, where Thai nationals hold a 51 percent majority stake on paper, allowing foreign investors to operate businesses restricted under the Foreign Business Act. Recent commentary in the Pattaya Mail notes that this model increasingly leaves foreign investors vulnerable as enforcement tightens.

If you operate a Thai limited company, here is what you should do now:

• Audit your shareholder structure: Ensure your Thai partners are legitimate investors who actually contributed capital to the business, rather than silent names on a registry.
• Prepare your paper trail: Authorities often look for proof of dividend payments and active participation by Thai majority shareholders.
• Assess your location risk: Businesses operating in recently targeted areas like Huai Khwang, or in restricted sectors like tourism and real estate, are at a higher risk of random audits.

If your corporate structure relies on proxy shareholders who have no real financial stake in your business, it is time to consult a qualified Thai corporate lawyer to discuss legal restructuring options.