What Foreign Investors Need to Know

Thailand remains one of Southeast Asia’s most attractive destinations for foreign investment. But setting up a business here involves navigating a Thai law that differs from most Western jurisdictions. Understanding your options and your obligations from the outset is essential.

The Right Structure Matters 

The structure you choose on day one has long-term impact for ownership, taxation, and compliance. The most common options for foreign investors are: 

• Thai Limited Company Under the Foreign Business Act (FBA), foreign ownership is generally capped at 49% of shares. All shareholders must be genuine investors with verifiable funds. Using Thai nominees to bypass foreign ownership limits is a strict criminal offense punishable by heavy fines and imprisonment for both the foreigners and the Thai nominees involved. 
• BOI-Promoted Company Qualifying businesses may be eligible for 100% foreign ownership, corporate tax exemptions, import duty waivers, and the right to own land. Available across a wide range of sectors including manufacturing, technology, tourism, and services. However, eligible business types and investment conditions must align with BOI criteria.
• Foreign Business License (FBL) is a mandatory permit for foreign-majority companies (where foreigners hold over 50% or more of the shares) wishing to operate businesses in Thailand. These restricted activities are listed under List 2 or List 3 of the Foreign Business Act, which include service industries, retail, wholesale, and brokerage. Operating without this license violates Thai law and carries severe legal penalties, making early compliance essential for international investors. 

What You Need to Register a Thai Limited Company 

• Company Name: Reserved online through the DBD system. You can test names one by one. Once approved, the name is locked for 30 days and cannot be extended.
• Registered Address: A valid physical address in Thailand. Note that if the address is already registered by 5 or more other companies, you must provide explicit proof of the right to use the space.
• Business Objectives: A detailed list of scope and activities the company intends to conduct.
• Capital Structure:
  • Minimum share value is 5 THB per share.
  • Shares must be at least 25% paid-up upon registration.
  • If registered capital exceeds 5 million THB, a bank certification statement proving the full paid-up amount is mandatory.
• Personnel Structure: Minimum of 2 shareholders and at least 1 director (with defined signing authority).

Annual Compliance Obligations 

Once incorporated, every Thai Limited Company must meet these mandatory monthly and annual requirements to avoid severe fines or revocation.

Annual Requirements

• Annual General Meeting: Must be held within 4 months of the fiscal year-end.
• Audited Financial Statements: Audited by a Thai Certified Public Accountant and filed via DBD e-Filing within 1 month post the Annual General Meeting.
• Shareholder List (BOJ.5): Submitted to the DBD within 14 days after the Annual General Meeting.
• Annual Corporate Tax (P.N.D.50): Filed with the Revenue Department within 150 days of the fiscal year-end.

Half-Year & Monthly Requirements

• Mid-Year Corporate Tax (P.N.D.51): Filed within 2 months after the first half of the fiscal year.
• Monthly VAT Filing (P.P.30): Mandatory by the 15th of every month (if VAT-registered), even with zero revenue.
• Monthly Withholding Tax: Filed by the 7th of every month if the company made payments subject to withholding tax.

Work Permit Requirements (If Applicable)

• Standard Ratio: 4 Thai employees + 2 Million THB registered capital per 1 foreign work permit.
• BOI Exception: Companies promoted by the Board of Investment (BOI) are generally exempt from this rigid ratio.

Penalty Warning: Missing any deadline results in progressive financial fines, legal liabilities for directors, and potential blacklisting of the business.

Before You Take the Next Step

Establishing a company in Thailand is entirely achievable; however, the legal foundation must be carefully structured from the outset. An inappropriate corporate structure, incomplete documentation, regulatory non-compliance, or improperly arranged shareholder matters can lead to significant legal complications, financial exposure, and unnecessary delays in the future.

Before proceeding, we strongly recommend obtaining professional legal advice tailored to your business objectives, investment structure, operational requirements, and long-term plans in Thailand.

At Chanthawong & Co, our licensed Thai attorneys in Phuket provide comprehensive company establishment and corporate advisory services for both Thai and foreign investors, including:

• Company incorporation and business structuring
• Shareholder and ownership planning
• Joint venture and shareholder agreements
• Registration with the Department of Business Development (DBD)
• Foreign business compliance and licensing
• Tax registration and corporate compliance
• Ongoing legal, accounting, and annual filing support
• Work permit, visa, and immigration assistance

We believe that careful legal planning, transparent structuring, and full compliance from the beginning are essential to protecting our clients’ interests and supporting sustainable business growth in Thailand.