How to Start a Business
Complete guide to registering and running a business in Thailand.
Important Advice
Business Structure Types
Thai Limited Company
บริษัทจำกัดไทย
2-4 weeks
Most common structure for foreigners. Requires 51% Thai ownership (can use nominees).
- Min 2M THB registered capital for work permit
- 3 Thai shareholders minimum
- Work permit eligible
BOI Company
บริษัท BOI
2-3 months
Board of Investment promoted company with tax incentives and 100% foreign ownership.
- Qualifying business activity
- Minimum investment requirements
- Business plan approval
US Treaty of Amity
สนธิสัญญาไมตรีอเมริกัน
1-2 months
US citizens can own 100% of most business types under this treaty.
- US citizenship required
- Specific business activities
- Treaty registration
Representative Office
สำนักงานตัวแทน
1-2 months
Non-revenue generating office for market research or coordination.
- Parent company abroad
- Limited activities only
- No direct sales
Registration Process
Choose Business Structure
Consult with a lawyer to determine the best structure for your business and visa needs.
Reserve Company Name
Reserve your company name with the Department of Business Development (DBD).
Prepare Documents
Memorandum of Association, Articles of Association, shareholder agreements.
Register Company
Submit documents to DBD and pay registration fees.
Obtain Tax ID
Register for corporate tax and VAT (if applicable) with the Revenue Department.
Apply for Work Permit
Apply for Non-B visa and work permit through the Ministry of Labor.
Costs Breakdown
The 4:1 Ratio Rule
For each work permit issued to a foreigner, the company must employ 4 Thai nationals. Additionally, the company must have 2 million THB in registered capital per work permit.
Example:
- • 1 foreign work permit = 4 Thai employees + ฿2M capital
- • 2 foreign work permits = 8 Thai employees + ฿4M capital
Pro Tips
- Start with the simplest structure that meets your needs - it's easier to expand than restructure
- Keep your registered capital in the company bank account - immigration may request proof
- Hire a reputable accounting firm from day one - late tax filings carry penalties
- Consider BOI promotion if your business qualifies - tax benefits and ownership advantages are worth the effort
Quick Reference
Registration Time
2-4 weeks
Minimum Capital
฿2,000,000
Thai:Foreign Ratio
4:1 employees
Related Guides
Business Development Dept.
Chonburi DBD Office
Mon-Fri: 8:30-16:30
Tel: 038-273-050