Business Law in Thailand — A Legal Guide for Foreigners
Company formation, foreign business restrictions, BOI applications, work permits, employment law, commercial contracts, and dispute resolution for foreign entrepreneurs and investors in Thailand.
Last Updated: 2026-09-23 · 23 guides in this topic
Thailand offers significant opportunities for foreign businesses and investors, but the legal landscape requires expert navigation. The Foreign Business Act restricts certain activities, company formation involves specific procedures, and ongoing compliance with Thai law is essential. This guide covers business structures, foreign ownership rules, work permits, contracts, and commercial dispute resolution.
Company Formation & Corporate Law
11 guidesSetting Up a Company in Thailand
Company structures, registration, and foreign ownership rules.
Read guideHow a Foreigner Can Open a Company
FBL, BOI, capital, and ownership structures.
Read guideStart a Business
Legal steps to launch a business.
Read guideWork Permit
Work authorisation for foreign employees.
Read guideBusiness Contracts
Essential terms and legal issues for contracts.
Read guideArbitration
Alternative dispute resolution under the Arbitration Act.
Read guideBOI Thailand Lawyer
Board of Investment promotion and incentives.
Read guideBankruptcy & Business Rehabilitation
Debt thresholds and procedures.
Read guideInternational Sale of Goods
Cross-border sales contracts under Thai law.
Read guideIntellectual Property Law
IP rights and remedies for infringement.
Read guideIntellectual Property Registration
Trademarks, patents, and copyright registration.
Read guideWork Permits & Employment Law
6 guidesWork Permit in Thailand
Work authorisation, permitted jobs, and employer duties.
Read guideThai Labor Law for Foreigners
Rights, contracts, and working legally.
Read guideWorking Without a Work Permit
Illegal employment and its penalties.
Read guideEmployer Does Not Pay Salary
How to recover unpaid wages.
Read guideUnfair Dismissal
Severance pay and compensation rights.
Read guideEmployee Complaints Against Employers
How employers should respond to labour complaints.
Read guideCommercial Disputes & Litigation
6 guidesCivil Litigation in Thailand
Resolving disputes through the Thai courts.
Read guideLetter of Demand
A formal demand before litigation.
Read guideWhy a Demand Letter Is Important
The strategic value of a demand letter.
Read guideForeign Court Judgment Enforcement
How Thailand treats foreign judgments.
Read guideInternational Contract Disputes
Governing law, jurisdiction, and arbitration.
Read guideLandlord Refuses to Return Deposit
Recovering a security deposit.
Read guideFrequently Asked Questions
Can a foreigner own 100% of a company in Thailand?
In most cases, no. The Foreign Business Act restricts foreign majority ownership in many business sectors. However, 100% foreign ownership may be possible with BOI promotion, under the US Treaty of Amity, or in businesses not restricted by the FBA. A Thai business lawyer can advise on your specific situation.
What is a BOI promotion in Thailand?
The Board of Investment (BOI) offers tax incentives, land ownership rights, and permission to bring in foreign workers for promoted businesses. Eligibility depends on the business type, investment amount, and location. The application process requires a detailed business plan.
Do I need a work permit to work in Thailand?
Yes. Foreign nationals must obtain a work permit before starting work in Thailand. Working without a permit is a criminal offence that can result in fines, imprisonment, and deportation. The work permit is tied to a specific employer and job description.
What is the Foreign Business Act (FBA)?
The FBA restricts foreign participation in certain business activities through three lists: List 1 (prohibited), List 2 (requires majority Thai ownership with exceptions), and List 3 (requires a Foreign Business Licence or BOI approval). Understanding which list your business falls under is essential before starting operations.
The information provided on this website is for general informational purposes only and does not constitute legal advice. Legal rights, procedures, and outcomes depend on the specific facts and circumstances of each matter. References to international or cross-border matters do not constitute advice on foreign law unless expressly stated. Please consult a qualified Thai lawyer for advice specific to your situation.