How to Change a Tourist Visa to a Non-B Visa in Thailand: Your Complete Guide
If you’re currently in Thailand on a tourist visa and planning to stay longer for employment, business, or investment purposes, converting your visa to a Non-Immigrant B Visa (commonly known as the “Non-B Visa”) is a crucial step. This visa is specifically designed for foreigners who intend to work or conduct business legally in Thailand.
At My Thailand Lawyer, a Bangkok-based law service, we specialize in helping individuals navigate the complex Thai immigration system with confidence. This comprehensive guide explains everything you need to know about how to change your tourist visa to a Non-B Visa in Thailand, including eligibility, requirements, procedures, timelines, and common challenges—without any unnecessary complications.
What Is a Non-Immigrant B Visa in Thailand?
The Non-Immigrant B Visa is a long-stay visa for individuals entering Thailand for business or employment. There are two primary categories:
Employment – For foreigners who have secured a job in Thailand and intend to work legally.
Business – For foreign investors, entrepreneurs, or company representatives managing business operations in Thailand.
Unlike the tourist visa, which is intended only for travel and short visits, the Non-B Visa is the legal requirement for working or engaging in professional activities.
Can You Convert a Tourist Visa to a Non-B Visa Inside Thailand?
Yes, it is possible to change a tourist visa to a Non-B Visa while remaining in Thailand, provided you meet the requirements set by the Thai Immigration Bureau. However, the process must be completed before your tourist visa expires, and you must present a valid reason for the change—typically supported by documentation from a registered Thai company offering you employment or requiring your presence for business purposes.
Eligibility Criteria for Changing Tourist Visa to Non-B Visa
Before applying for a conversion, you need to ensure you meet the following conditions:
You hold a valid Tourist Visa (TR) or Visa Exemption stamp.
You have an employer in Thailand or a registered business partner/company.
The employer or company is legally registered in Thailand and can provide all required corporate documents.
You are not engaged in activities prohibited under Thai labor laws.
You have sufficient documentation to justify the visa conversion.
Step-by-Step Process to Convert Tourist Visa to Non-B Visa
At My Thailand Lawyer, we guide clients through each step, ensuring no detail is overlooked. Here’s a breakdown of the process:
1. Secure a Job Offer or Business Purpose
The first step is having a concrete reason for the visa conversion. If you’re converting for employment, you need an official job offer from a company registered in Thailand. If converting for business, the company must show your role and necessity.
2. Gather Required Documentation
For an Employment-Based Non-B Visa, the documents generally include:
Your valid passport and tourist visa
Completed visa application form (TM.86)
Passport-sized photos
Company registration documents
Company’s latest financial statements
List of shareholders
Employment contract
Letter of invitation from the company
Company map
Copy of your academic qualifications (if required)
Work permit application acknowledgment (if applicable)
For a Business-Based Non-B Visa, documents may include:
Official business invitation letter
Corporate registration certificate
Objectives of the company
Meeting minutes or shareholder decisions
Your role in the company
Other supporting evidence of business activity
3. Submit Application to Thai Immigration Office
Once all documents are prepared, you must submit your application at the local immigration office in Thailand, preferably at least 15 working days before your tourist visa expires. Immigration officers will evaluate your application and supporting documents.
4. Wait for Processing
The review and processing time can vary but usually takes 7 to 15 working days. During this time, immigration may request additional documents or clarifications.
5. Receive Non-B Visa
Once approved, you will receive a 90-day Non-Immigrant B Visa stamp in your passport. This visa can later be extended to a 1-year stay based on work permit issuance or continued business presence.
Important Notes and Considerations
Validity of Your Tourist Visa
Ensure your tourist visa or entry stamp is valid at the time of application. Overstaying your visa can result in fines, visa denial, or even deportation.
Timing is Crucial
You cannot convert a visa after it expires. We recommend beginning your visa change process at least 3 weeks before your tourist visa expires to allow time for document gathering and submission.
Role of the Employer or Business
Your prospective employer or the business you’re associated with plays a critical role in this process. They must be cooperative and provide authentic, complete documents as required by immigration officials.
Common Reasons for Rejection
Incomplete or inaccurate documentation
Suspicious or unregistered companies
Employer fails to provide required financial evidence
Applicant lacks relevant qualifications for the position
Submission after the tourist visa has expired
What Happens After Receiving the Non-B Visa?
Once you receive your 90-day Non-B Visa, the next steps include:
Applying for a work permit (if employment-based)
Applying for a one-year extension based on continued employment or business
Reporting your stay every 90 days to Thai Immigration (90-Day Reporting)
These subsequent steps are necessary for maintaining your legal status in Thailand.
Why Choose My Thailand Lawyer?
At My Thailand Lawyer, we specialize in assisting expatriates and foreigners with every aspect of Thai visa law. Our team of experienced legal professionals in Bangkok understands the documentation, processes, and communication required to get your Non-B Visa approved efficiently and legally.
We ensure:
Accurate document preparation and review
Direct communication with Thai authorities
Tailored legal advice based on your specific situation
Timely updates throughout the application process
Assistance with future extensions and work permit applications
Our legal services are focused on helping you stay in Thailand without stress, delays, or legal risks.
Benefits of the Non-Immigrant B Visa
Legal work status in Thailand for employment or business
Pathway to a work permit and long-term visa extension
Ability to open bank accounts, rent property, and handle legal matters
Eligible for multiple re-entry permits and travel flexibility
Extendable to a 1-year stay with proper documentation
Frequently Asked Questions
Can I convert a Visa Exemption (no visa) to a Non-B Visa?
Yes, under certain conditions, this is possible, but the process can be stricter. It’s advisable to consult with a legal expert before applying.
Is it easier to apply outside Thailand?
In some cases, applying for a Non-B Visa from your home country or a Thai Embassy in another country may be simpler. However, if you’re already in Thailand and have employment or business plans in place, applying from within is feasible.
How long does the conversion process take?
The process typically takes 7–15 working days, depending on the completeness of your documents and the immigration office’s caseload.
Let Us Help You Stay Legally in Thailand
Navigating Thailand’s visa and immigration system can be overwhelming—especially when changing visa types within the country. At My Thailand Lawyer, we make the process smooth, legal, and stress-free. From collecting documents to liaising with immigration on your behalf, we’re here to help.
If you’re considering switching your tourist visa to a Non-B Visa in Thailand, don’t leave it to chance. Contact My Thailand Lawyer in Bangkok today for expert legal support and personalized assistance tailored to your situation.