The Complete Guide to Thailand’s Non-B Business Visa: A Comprehensive Resource for Expats

Last updated on April 12, 2026

Thailand’s Non-B visa is also known as the Non-Immigrant B visa. It is the main way for foreigners to work or do business in Thailand. This guide gives expats all the information they need about getting, keeping, and renewing this important visa. It covers the online application process through the new e-portal system and long-term compliance requirements.

(UNDER CONSTRUCTIONS 24 JULY 2025)

Understanding the Non-B Visa

The Non-Immigrant B visa is designed for foreigners who wish to enter Thailand for business and employment purposes. This visa category encompasses several subcategories including working in Thai companies, conducting business meetings, teaching in educational institutions, and pursuing investment activities. The visa allows a 90-day stay when you enter. This can be extended to one year after you get a work permit[1][4][5].

Key Features of the Non-B Visa:

Initial validity: 90 days from date of issue
Entry permission: Up to 90 days per entry
Extension possibility: Can be extended to 1-year with valid work permit
Multiple entry options: Available for business purposes

The Revolutionary e-Visa System

Since January 1, 2025, Thailand has started a global e-Visa system. This system is available at all 94 Royal Thai Embassies and Consulates around the world. This digital change has removed the need for in-person embassy visits. Now, applicants can complete the whole process online at www.thaievisa.go.th.

e-Visa Application Process

The online application follows a streamlined six-step process:

Visit the Official Portal: Access www.thaievisa.go.th
Create an Account: Register using a valid email address
Complete the Application: Fill out all required forms and details
Upload Documents: Attach all supporting documentation
Pay the Fee: Complete payment through the secure online portal
Receive e-Visa: Download the approved visa electronically

Processing Time: Standard processing takes 5-10 working days, though incomplete applications may require up to 14 working days.

Comprehensive Application Requirements

Essential Documents for e-Visa Application

The Non-B visa application requires specific documentation that varies depending on the purpose of visit :

Core Requirements:

Valid passport with minimum 6 months validity
Completed e-Visa application form
Recent passport-sized photograph (taken within 6 months)
Evidence of adequate finances (20,000 THB per person, 40,000 THB per family)

Employment-Specific Documentation

For work-related applications, additional documentation is mandatory :

Employee Documents:

WP.3 approval letter from the Ministry of Labour
Job offer letter from the Thai employer
Employment contract (bilingual Thai-English versions)

Company Documents (Provided by Employer):

Company registration certificate and business license
List of shareholders
Corporate income tax filings and balance sheets
VAT registration certificate (Por Por 20)
Company profile and business operation details

Essential documents needed for Thailand Non-B visa application process

Work Permit Requirements and Process

No foreign national can legally work in Thailand without a valid work permit. The work permit application must be completed within 90 days of entering Thailand on a Non-B visa .

Company Eligibility Requirements

Thai companies must meet specific criteria to sponsor foreign workers :

Financial Requirements:

2 million THB minimum registered capital per foreign employee
4 Thai employees employed for each foreign work permit (4:1 ratio) (Unless married to a Thai which is half)
Valid VAT registration
Demonstrated revenue to cover foreign employee salaries

Work Permit Application Documents

Personal Documentation:

Medical certificate from approved clinic
Educational certificates and degrees
Work experience certificates from previous employers
Official translations of foreign document

Processing: Work permit applications typically take 7-10 business days to process at the Ministry of Labour .

Visa Extensions: From 90 Days to Long-Term Stay

Initial Extension to One Year

Once a work permit is approved, holders can extend their 90-day Non-B visa to a one-year extension of stay. This extension eliminates the need for border runs and provides stable long-term residence.

Extension Requirements:

Valid work permit
Employment certification letter
TM.7 application form
1,900 THB extension fee
Supporting company documents

Salary Requirements by Nationality

The extension approval depends on meeting minimum salary requirements that vary by nationality:

Nationality Group	Minimum Monthly Salary (THB)
Canada, Japan, USA	60,000
Europe, Australia	50,000
Hong Kong, South Korea, Singapore, Taiwan	45,000
India, Malaysia, Middle East	45,000
China, Indonesia, Philippines	35,000
Africa, Cambodia, Laos, Myanmar, Vietnam	25,000

The Critical 90-Day Reporting Requirement

Every foreign national in Thailand for over 90 days must report their address to immigration every 90 days. This requirement is separate from visa extensions and applies to all long-term residents. We have an extensive document on the 90-day report and click here for more information.

Annual Visa Renewal Process

Non-B visa holders must renew their one-year extensions annually before expiry . The renewal process requires updated documentation demonstrating continued employment and legal compliance.

Annual Renewal Requirements

Core Documentation:

Valid work permit and copies
Current employment letter with salary details
Income tax payment receipt (Por Ngor Dor 91)
Updated company documents (issued within 6 months
Social Security payment records
1,900 THB renewal fee

Application Window: Renewals should be submitted 30-45 days before the current extension expires .

Cost Analysis and Financial Planning

Understanding the complete cost structure helps expats budget effectively for their Thai business visa journey. Costs are divided between employee responsibilities and employer obligations.

Employee Cost Breakdown (First Year)

Mandatory Costs:

e-Visa application fee: ~2,500 THB ($80 USD)
Medical certificate: 500-1,000 THB
Document translations: 2,000-5,000 THB
Visa extension fee: 1,900 THB
Annual renewal fee: 1,900 THB

Total Estimated First-Year Costs: 8,800-12,300 THB ($280-390 USD)

Optional Services (all is approximative)

90-day reporting via agent: 1,000-4,000 THB per report
Professional visa assistance: 10,000-30,000 THB
Express processing services: Additional fees may apply

Employer Responsibilities

WP.3 application processing
Work permit issuance fees
BOI registration costs (if applicable)

Common Pitfalls and How to Avoid Them

Critical Application Mistakes

Documentation Errors:

Spelling mistakes in passport details cause automatic rejection
Incomplete or missing company documents
Incorrect photograph specifications
Using wrong passport type selection in e-Visa system

Legal Compliance Issues:

Never start working before receiving a work permit
Missing 90-day reporting deadlines
Failing to maintain required bank balance for extensions
Not keeping proper documentation records

Timeline Mismanagement:

Applying too close to visa expiry dates
Underestimating processing times
Not planning for document translation time

Ongoing Obligations and Compliance

Long-Term Requirements

Annual Obligations:

Work permit renewal (before expiry)
Visa extension renewal
Income tax filing and payment
Social Security contributions

Quarterly Obligations:

90-day address reporting
Maintaining legal employment status

Record Keeping Best Practices

Essential Documentation to Maintain:

All visa extension receipts and stamps
90-day reporting confirmations
Work permit copies and renewals
Tax payment receipts
Employment contracts and updates

Official Resources and Support

Government Portals and Services

Primary Official Websites:

Thai e-Visa System: https://www.thaievisa.go.th/
Immigration Bureau: https://www.immigration.go.th/
Ministry of Labour: https://www.mol.go.th/
90-Day Online Reporting: https://tm47.immigration.go.th/

Emergency Contacts:

Immigration Hotline: 1178 or 02-572-8500
Tourist Police: 1155

Regional Immigration Offices

Bangkok: Government Complex Chaengwattana, Building B, 120 Moo 3, Chaengwattana Road, Laksi District

Processing Hours: Most offices operate Monday-Friday, 8:30 AM – 4:30 PM

Conclusion

The Thailand Non-B visa represents a gateway to professional opportunities in one of Southeast Asia’s most dynamic economies. The new e-Visa system has made it much easier to apply at first. The process still has many steps and ongoing rules to follow. Success depends on thorough preparation, accurate documentation, and maintaining ongoing legal compliance through work permits, regular reporting, and timely renewals.

The key to a smooth Non-B visa experience is knowing that this is not just a one-time application. It is the start of a long-term relationship with Thai immigration authorities. Expats can build stable careers in Thailand. To do this, they should follow the right steps. They also need to keep accurate records. Staying updated on changes is important too. They can do this while staying fully legal.

If you are thinking about this path, start preparing early. Work with trusted Thai employers who know the sponsorship rules. This will greatly improve your chances of success. Investing in proper visa compliance brings benefits. It provides legal work authorization, long-term residence stability, and allows full participation in Thailand’s business environment.

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