1) Using the Wrong Type of Visa and Immediately Starting to Work or Manage a Business
A common misunderstanding is entering Thailand with a Tourist Visa, Visa Exemption, or sometimes a Student Visa, and then immediately starting to run a business or assist a company.If an inspection occurs (for example by Immigration, Labor authorities, or during official transactions), this may be interpreted as working without proper legal status.
Correct Approach
If you enter Thailand to conduct business or work, the main visa type should be Non-Immigrant Visa B.
You must also ensure the process aligns with obtaining a Work Permit before starting work. Proper planning should be done before entering Thailand, including Purpose of stay,Sponsoring company,Employment contracts,Application timeline
2) No Work Permit but Believing Company Owners Can Work Freely
From a legal perspective, even if you are a director or shareholder, if you perform work, manage operations, or provide services, you may still be required to obtain a Work Permit under Thai labor law definitions.
Possible consequences include:
- Legal prosecution or fines/Orders to leave the country (depending on the case)
- Business reputation risks and complications for future visa extensions
Correct Approach
A Work Permit must be obtained before starting work.
3) Working Outside the Scope Specified in the Work Permit (Position / Location / Duties)
Many people follow the correct process initially but make mistakes in the details, such as:
- Changing the actual workplace while the documents still show the previous location
- Performing duties that do not match the Job Description submitted in the application
- Visiting clients, working in the field, or operating at multiple sites without proper supporting documentation
Correct Approach
Before changing job roles, work locations, or organizational structure, conduct a Compliance Check to ensure all documents are updated to reflect the actual situation.Companies should prepare clear internal Standard Operating Procedures (SOPs), including: Who has the authority to approve changes,Which government agencies must be notified,What documents are required for the update
4) Incorrect Company Structure – Assuming 49% Foreign Ownership Works for Every Business
The 49% rule is only a general overview. In reality, regulations depend on the type of business and the restrictions under the Foreign Business Act (FBA). Some businesses are restricted and require specific permission before foreigners can operate them.
Correct Approach
Always follow these two steps:
- Classify your business activity to determine whether it falls under a restricted category according to the FBA.
- If it is restricted, consider applying for the appropriate authorization, such as:Foreign Business License (FBL) ,Foreign Business Certificate (FBC),Or special privileges such as BOI incentives or treaty-based exemptions, depending on the case.
5) Using a “Nominee Shareholder” (Thai Shareholders in Name Only) to Circumvent the Law
This is considered one of the most dangerous mistakes and has become an issue that government authorities are paying increasing attention to.
Potential Risks
- The company may be subject to in-depth investigations regarding actual control of the business, sources of shareholders’ funds, and unusual financial transactions.
- Legal risks, asset-related issues, and long-term limitations on the company’s ability to operate.
Correct Approach
- Use a sustainable and legally compliant corporate structure.
- Apply for the appropriate permissions when the business falls under restricted categories (such as FBL or FBC).
- Design a transparent structure of capital, shareholders, and director authority that can be verified and audited.
6) Not Preparing Tax and Financial Systems from Day One (VAT, Corporate Income Tax, WHT)
Many foreigners start selling products or services first and organize their accounting later. When it comes time to file VAT returns or request official government documents, problems often arise.This may lead to:Requests for additional documentation,Business delays,Increased compliance risks
Correct Approach
- Establish an accounting and financial record system from the first month of operation.
- Clearly separate company bank accounts and maintain complete documentation for all expenses.
- Work with professional accountants or tax advisors who ensure proper documentation and compliance, not just tax filing.
7) Using a Company Address That Cannot Be Properly Verified or Has an Unclear Agreement
Especially in cases involving:
- Company registration, VAT registration, or Visa/Work Permit applications
If the address cannot receive official documents or there is no evidence of actual use of the premises, this increases the risk of inspection and repeated requests for additional documents.
Correct Approach
- Use a Virtual Office / Registered Address with a real physical location
- Ensure there is someone available to receive official correspondence
- Maintain clear contracts and supporting evidence
- Keep systematic records of company usage and communications
8) Forgetting or Missing the 90-Day Report and Immigration Obligations
Foreign nationals staying in Thailand for more than 90 days are required to report their address within the prescribed period. Failure to do so may result in fines and can make visa extensions or government transactions more complicated at critical times.
Correct Approach
- Set up a reminder system for due dates (within the team or with the document administrator)
- Create a monthly and quarterly Immigration document checklist
9) No Long-Term Plan for People, Contracts, and Risk Protection
Many businesses begin with trust, but as they grow, problems may arise such as:
- Unclear agreements between shareholders or partners
- Weak control over signing authority
- No policy for company documents, company seal, or expense approvals
- Foreign executives relying too heavily on intermediaries
Correct Approach
- Prepare a Governance Package from the beginning:
- Shareholders’ Agreement / Director’s Authority Matrix
- Company document policies / expense approval policies
- Clearly define the responsible structure for visa, work permit, tax, and legal matters
The Right Approach
If you want to do business in Thailand safely and sustainably, follow these four pillars:
- Right Visa – Enter Thailand with the correct purpose
- Right Work Authorization – Obtain a Work Permit before starting work
- Right Company Structure – Ensure the structure complies with the FBA and does not use nominee arrangements
- Right Compliance Operations – Manage tax, address, immigration, and company documentation systematically
