LegalStructure

The 49% Rule Demystified

2026-01-07Siam Advice FirmLegal Analysis

The "49% rule" is perhaps the most discussed—and most misunderstood—aspect of Thai business law. Let's break it down clearly.

What the Rule Actually Says

For businesses in restricted categories under the Foreign Business Act, foreign ownership cannot exceed 49%. This means Thai nationals must hold at least 51% of shares.

Common Misconceptions

"If I invest 90% of the capital, I control 90%."

Wrong. Ownership is determined by share percentage, not capital contribution. You could invest 99% of the money but still only own 49% of shares.

"As long as I have 49%, I'm compliant."

Not necessarily. Authorities also examine:

  • Voting rights (must be 49% or less)
  • Actual control patterns
  • Profit distribution
  • Decision-making authority

"Everyone uses nominees to get around this."

Dangerous and illegal. The government is actively prosecuting nominee arrangements, with 46,000+ companies under investigation.

How Authorities Detect Violations

They look for:

  • All decisions made by the foreign shareholder
  • Thai shareholders with no real investment
  • Profits paid entirely to foreigners
  • Bank accounts controlled by foreigners

Legal Alternatives

Instead of trying to circumvent the rules, consider:

  • BOI Promotion (100% foreign ownership allowed)
  • Treaty of Amity (for US citizens)
  • Preference shares (creative but legal structuring)
  • Genuine Thai partnership (real investment partners)

The Bottom Line

The 49% rule is real, but legal pathways to full ownership exist. The key is choosing the right structure from the start.


Confused about your options? Let's clarify them together.

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Disclaimer: Siam Advice Firm is a private professional consulting firm. We are not a government agency and do not provide official government documents directly. We provide legal advisory and support services to ensure business compliance with Thai regulations.

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