Company Incorporation

Branch Office Registration (Thailand)

We help foreign companies establish a Branch Office in Thailand, including Foreign Business License (FBL) support (where required), registrations, and ongoing compliance setup.

Who is it for / Suitable for

Foreign companies wishing to establish a legal presence in Thailand.

Businesses that want to conduct operations on behalf of their overseas head office.

Companies needing to hire staff, issue invoices, sign contracts, or run local operations under the foreign entity’s name.

Ideal for service-based, tech, consulting, trading support, or regional management operations.

Key Requirements

Overseas parent company registration

The parent company must be legally registered overseas.

Minimum funding

Minimum funding requirement of 3 million THB (can be injected in phases).

Thai-resident authorized representative

At least one Thai-resident authorized representative is required.

Foreign Business Act (FBA) compliance

Activities must comply with the FBA; a Foreign Business License (FBL) is required unless exempted.

Operate within approved scope

The branch office must only engage in activities allowed under the approved scope.

Annual audited financial statements

Financial statements must be audited annually.

Clients need to provide the following information / documents

Document Name

Notarized

Parent company Certificate of Incorporation

Must show company registration details.

Yes

Memorandum & Articles of Association

Full set from parent company.

Yes

Parent Company Affidavit / Company Profile

Director list, share structure, business activities.

Yes

Power of Attorney appointing the branch representative

Representative must sign acceptance.

Yes

Passport/ID of branch representative

Must be valid; proof of Thai residence if applicable.

Financial Statements of the parent company (latest year)

Demonstrates financial capability.

Yes

Business plan & projected expenses for 3 years

Required for FBL assessment.

Office lease agreement (if available)

Needed before final approval.

Evidence of initial capital remittance plan

Required for capital injection schedule.

Average Processing Time

2–4 months

Depending on complexity, industry, and Foreign Business License (FBL) approval timeline.

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What you would get when the application is complete

Foreign Business License (FBL)

Issued by the Ministry of Commerce (where required).

Branch Office Registration Number

Official registration details for the branch office in Thailand.

Tax ID & VAT registration (if applicable)

Tax ID Number and VAT Registration Certificate (if applicable).

Company registry documents

Registry document showing approval to operate in Thailand under the foreign entity.

On-going Compliance Requirements

To stay compliant after registration:

Annual audit and filing

Annual audit and submission of financial statements.

Capital injection schedule

Capital injection (3 million THB) must follow the required remittance schedule.

Tax filings

Corporate income tax filing + monthly VAT/PIT (if applicable).

Notify changes

Notification of any changes (e.g., representatives, address) to the Ministry of Commerce.

Maintain Thai-format accounting

Maintaining proper accounting books in Thai format.

Government Agencies Involved

Authorities involved in Branch Office Registration and compliance:

Ministry of Commerce (MOC)

Oversees the approval of the Foreign Business License (FBL) and validates the scope of activities under the Foreign Business Act.

Department of Business Development (DBD)

Reviews parent company documents and branch office registration details; issues corporate registry documents for the branch.

Revenue Department (RD)

Issues Tax ID and manages VAT registration (if applicable); oversees tax compliance for the branch office.

Social Security Office (SSO)

Required when the branch hires employees; manages employer registration and monthly contributions.

Ministry of Labour (MOL)

Oversees work permits and labour compliance for foreign employees.

Bank of Thailand (BOT) (indirect)

Oversees foreign remittance rules for the required capital injection.

Thanks SiamBusinessLaw to helping us draft a strong agreement and help us see through the case until we have an absolute win case. Appreciate your patience and professionalism

Your law firm handles our case very well and professional. Your regular updates allow us a peace of mind an dmake us feel like we are cared for. Your professional advise gave us a peace of mind too.

Your Burmese team is legit. They gave us the attention and respect we have long missed. We appreciate your work to help us get started properly here in Thailand.

Thank you for assisting us with our case with the Thai Revenue Deparment. We are satisfied with the outcome and we think it is fair.

Your due diligence work for our M&A is done with utmost care and accuracy. It's rare to see such work done by a legal firm in Thailand.

Consult With Our Corporate Advisory Team

Our team is ready to guide you through the full process. Reach us on WeChat or WhatsApp.