Internship Visas & Work Experience in Thailand

Legal Framework for Internships

Thailand does not have a specific "internship visa" category. Instead, internships fall under the broader framework of the Foreign Employment Act B.E. 2551 (2008) and immigration regulations. The legal treatment depends on whether the internship is paid, its duration, and whether it is part of a formal educational program. Getting this right is important — working without proper authorization carries serious penalties.

Non-Immigrant B Visa for Internships

For most formal internships, you will need a Non-Immigrant B visa. This is the standard visa for business and employment purposes. Requirements: (1) Letter of invitation from the Thai employer/host organization, (2) Description of the internship program (duties, duration, supervision), (3) Company registration documents (affidavit, shareholder list), (4) Your educational credentials, (5) Passport with at least 6 months validity. Apply at the Royal Thai Embassy or Consulate in your home country before traveling. Processing time: 3-7 business days. Cost: THB 2,000 (single entry) or THB 5,000 (multiple entry).

Work Permit Considerations

Whether you need a work permit depends on the nature of the internship. Work permit generally required if: the internship is paid (salary or stipend), it lasts more than 15 days, or you perform productive work for the organization. Potential exemptions: unpaid internships of short duration, internships under bilateral agreements (MOU between Thailand and your country), and internships that are part of a Thai university program.

MOU-Based Internships

Thailand has bilateral agreements with several countries for youth exchange and internship programs. These MOUs may provide streamlined work permit processes or exemptions. Notable programs include: AIESEC Thailand (registered with the Ministry of Labor), IAESTE Thailand (for technical internships through Thai universities), and bilateral youth mobility agreements with countries including Australia, Japan, and South Korea. If your internship is through an MOU program, the sponsoring organization typically handles visa and work permit arrangements.

University Cooperation Programs

Internships arranged through a formal agreement between a foreign university and a Thai university or institution benefit from a more favorable legal framework. Under the Ministry of Education regulations, students participating in credit-bearing internships through recognized universities may be exempt from work permit requirements. Requirements: (1) Active enrollment at a recognized university, (2) Formal MOU between the foreign and Thai educational institutions, (3) The internship is credit-bearing and supervised by the university, (4) Duration typically limited to one academic semester (4-6 months).

Paid vs. Unpaid Internships

Paid internships almost always require a work permit. The employer must follow the standard work permit application process: file with the Ministry of Labor, demonstrate that the position requires foreign expertise, and meet the THB 2 million registered capital per work permit requirement (though this may be relaxed for internship programs). Minimum wage applies — at least THB 400/day (Bangkok rate, 2026). Unpaid internships occupy a legal gray area. While technically any "work" requires a permit regardless of pay, immigration and labor authorities are generally more lenient with genuine unpaid internships at established organizations, particularly those with educational components.

Duration Limits

Most internship arrangements are limited to: 3-6 months for standard corporate internships, up to 12 months for MOU-based programs, one academic semester for university cooperation programs. Extensions may be possible but require renewal of visa and work permit (if applicable). The Non-Immigrant B visa is typically issued for 90 days and can be extended at Thai immigration for the duration of the internship program.

Employer Obligations

Thai employers hosting foreign interns must: (1) Provide a safe working environment (Labor Protection Act B.E. 2541 (1998) applies), (2) Comply with working hour limits (8 hours/day, 48 hours/week), (3) For paid interns: withhold income tax (if applicable), provide social security enrollment (for internships over 1 month), and pay at least minimum wage, (4) Maintain proper documentation (internship agreement, work permit copies), (5) Report the foreigner's employment to the Ministry of Labor.

Tax Implications

If you receive payment during your internship: income earned in Thailand is taxable. The first THB 150,000 of annual income is tax-exempt (with deductions). Employers must withhold income tax at source. You may be entitled to a refund if your total annual income is below the taxable threshold. Check if your country has a double taxation agreement (DTA) with Thailand — many do, which prevents being taxed twice on the same income.

Practical Steps

(1) Secure your internship offer in writing before applying for the visa. (2) Ask the employer whether they will assist with work permit — reputable companies understand the process. (3) Apply for the Non-Immigrant B visa from your home country. (4) Arrive in Thailand and (if required) begin the work permit process immediately. (5) Register your address with immigration within 24 hours of finding accommodation. (6) Complete 90-day reporting if your stay exceeds 90 days.

Related Guides

• Immigration Law
• Volunteering Visas
• Work Permit Timeline