What Documents Are Required to Register a Company in Thailand? BOI Company Registration Requirements Explained

Establishing a business in Thailand is a critical step for many investors seeking to expand into the Southeast Asian market. In practice, however, the registration process, document preparation, and policy alignment often prove more detailed-and nuanced-than anticipated. This is especially true when applying for approval from the Board of Investment (BOI) of Thailand, where requirements differ significantly from those for standard company registration. Clarifying these key points helps minimize risks such as repeated supplementary submissions or application rejections.

Basic Document Checklist for Registering an Ordinary Thai Company

1. Identity documents of at least one natural-person shareholder (certified and translated copies of passport)

2. Articles of Association specifying registered capital, scope of business operations, directors’ authority, and other core provisions

3. Shareholders’ resolution and appointment letter for directors-signed by all shareholders and notarized

4. Proof of local registered address in Thailand (e.g., lease agreement or title deed, accompanied by a letter of consent from the landlord)

5. Certificate of name availability and approval issued by the Department of Business Development, Ministry of Commerce

6. Capital verification statement (funds must be deposited into a designated Thai bank account, with a confirmation letter issued by the bank)

7. Identity documents of at least one director who is either a Thai national or holds a long-term residence permit

8. Company seal registration form and imprint retention statement

Key Eligibility Criteria and Additional Requirements for BOI-Approved Companies

1. The investment project must fall within an industry listed in the BOI’s current “Promoted Activities List,” including new energy, smart electronics, advanced medical devices, and modern agricultural processing.

2. A comprehensive business plan must be submitted, detailing technical sourcing, local procurement ratios, R&D expenditure share, environmental protection measures, and other quantifiable metrics.

3. Foreign ownership is unrestricted; however, applicants must commit not to engage in activities excluded from the Promoted Activities List (e.g., land trading, media publishing, or legal services).

4. Paid-up capital must meet or exceed the minimum threshold set by the BOI-determined based on industry classification, number of employees, and technological sophistication.

5. Letters of intent or draft employment contracts for at least two Thai nationals are required; for high-tech projects, this may be reduced to one employee in the first year.

6. Factory location must comply with BOI-designated zones; non-manufacturing projects must operate within approved industrial estates or technology parks.

7. For projects involving imported machinery or raw materials, applicants must concurrently submit a justification for tariff exemption eligibility and apply for pre-ruling classification with Thai Customs.

8. All BOI application documents must be submitted in Thai; English versions serve only as reference and must be translated by a translation agency accredited by the Thai Ministry of Justice.

Key Differences Between the Two Registration Pathways

1. Standard company registration typically takes 10-15 working days; BOI approval requires an additional 3-6 months, including technical evaluation, on-site inspection, and policy compliance review.

2. Ordinary companies may select any legally permissible business address; BOI-approved enterprises must align their registered address with their actual operational premises and are subject to annual on-site audits.

3. Tax incentives-including corporate income tax exemptions, import duty waivers, and streamlined work permits for foreign executives-are contingent upon continuous compliance with BOI post-approval monitoring requirements.

4. Changes to shareholders or directors of ordinary companies require only notification to the Ministry of Commerce; BOI-approved enterprises must obtain prior written BOI approval for any adjustments to equity structure, scope of operations, or production capacity.

5. BOI certificates are typically valid for 5-8 years; renewal assessment must be initiated six months before expiry. In contrast, ordinary company licenses have no fixed expiration date and require only annual filing.

The above outlines the essential documentation and entry requirements for registering a company in Thailand and applying for BOI promotion status. Should you have specific questions-or wish to explore sector-specific eligibility details-we recommend conducting a feasibility analysis and policy alignment assessment tailored to your project type well in advance.