For foreign nationals seeking to work, invest, or conduct business in Thailand, the Non-Immigrant Visa Category “B” (Non-B) serves as the essential gateway. Unlike tourist visas or visa exemptions, the Non-B visa is specifically designed for individuals engaging in commercial activities within the Kingdom .

However, a critical distinction must be understood from the outset: the Non-B visa permits entry and residency, but it does not automatically authorize employment. A separate Work Permit (Work Permit) issued by the Ministry of Labour is required for actual work activities .

1. Understanding the Non-Immigrant B Visa

The Non-B visa is issued to foreigners entering Thailand for business or employment purposes. It is strictly regulated under the Immigration Act B.E. 2522 (1979) and requires careful compliance. The following table outlines the primary visa types relevant to business activities in 2026:

| Visa Type | Best For | Validity / Stay | Key Requirements | Work Permit Required | | :--- | :--- |AN:--- | :--- | :--- | | Non-B (Single Entry) | Initial employment, short-term business (e.g., setting up a company) | Valid 3 months; Stay 90 days | Invitation letter from Thai company, corporate documents | Yes (for employment) | | Non-B (Multiple Entry) | Frequent business travelers, regional executives | Valid 1 year; Stay 90 days per entry | Proof of frequent business necessity | No (for business visits) | | Non-B (BOI) | Employees of BOI-promoted companies | 1-2 years (extendable) | BOI approval letter, streamlined process | Yes | | Destination Thailand Visa (DTV) | Digital nomads, freelancers, remote workers | 5 years; Stay 180 days (+180 ext.) | 500,000 THB savings, remote work proof | No (foreign income only) | | Long-Term Resident (LTR) | High-income professionals, wealthy pensioners | 10 years | $80k+ income or $1M assets | Yes (for certain categories) |

2. The e-Visa Mandate (2026 Update)

Since January 2025, Thailand has fully transitioned to a global e-Visa system . This means:

No physical visa stamps are issued at embassies in advance.

Applications must be submitted online via the official website: https://www.thaievisa.go.th/ .

Upon approval, a PDF confirmation (Electronic Visa) is sent, which must be printed and presented upon arrival.

Processing Times: Standard review takes 10 to 15 working days. If the embassy requests additional documents or an interview, processing may extend to 3–4 weeks .

3. Financial and Employer Requirements

Obtaining a Non-B visa for employment is a sponsor-driven process. The Thai employer bears significant responsibility and must meet specific criteria:

Employer Qualifications

Paid-up Capital: Minimum registered capital of 2 million Thai Baht per foreign employee .

Thai Employee Quota: Generally, companies must employ 4 Thai nationals for every 1 foreigner (often referred to as the 1:4 rule) .

Physical Office: The company must have a legitimate physical address.

Employee Qualifications

Relevant Expertise: The role must require skills not readily available in the Thai labor market.

Salary Thresholds (2026): While varying by nationality, minimums are strictly enforced:

General Applicants: 40,000 – 45,000 THB

Chinese/Taiwanese: 45,000 THB

Singaporean/Japanese/Korean: 50,000 THB

Source: 

Financial Proof for Applicants

Single Entry: Bank statement showing a balance of no less than 30,000 THB (approx. 750 EUR) .

Multiple Entry: Bank statement showing a balance of no less than 120,000 THB (approx. 3,000 EUR) .

4. The Application Process: Step-by-Step

The process follows a strict sequence. Attempting to work before completing these steps renders the foreigner illegally employed.

Step 1: Prepare Documentation

The employer and employee must gather the necessary documents. The most critical are:

From the Thai Employer:

Invitation letter (on company letterhead, signed, with stamp)

Business registration and license (issued within the last 6 months)

List of shareholders (Bor Or Jor 5)

Balance sheet and latest financial statements

VAT registration (Por Por 20)

Evidence of Thai employee social security contributions 

From the Foreign Employee:

Passport (valid for 6+ months, at least 2 blank pages)

Digital photo (4x6cm, white background)

Resume/CV (English)

Degree certificates (authenticated)

Work experience letters 

Step 2: Apply for the Non-B Visa

The employee applies online via the Thai e-Visa website in their home country or country of legal residence . For those already in Thailand on a tourist visa or visa exemption, a Change of Visa Status is possible at Thai Immigration, though this requires significant justification and fees.

Step 3: Enter Thailand

Upon approval, the employee receives the e-Visa PDF. Entering Thailand, immigration will stamp a 90-day permitted stay .

Step 4: Apply for the Work Permit (WP)

Immediately after arrival, the employer must apply for a Work Permit at the Department of Employment. This process typically takes 2 to 4 weeks .

Important: The work permit is tied to a specific employer, job title, and location. Working for a different company or in a different role requires a new permit.

Step 5: Apply for the 1-Year Extension

Within the last 30 days of the initial 90-day stay, the employee must apply for a One-Year Extension of Stay at the Thai Immigration Bureau.

Fee: 1,900 THB.

Requirement: The employee must have a valid work permit and the employer must still meet the capital and quota requirements .

5. Special Considerations for Foreigners in Thailand

5.1 BOI Companies (Board of Investment)

If the Thai employer is BOI-promoted, the process is significantly faster and more flexible.

Privileges: Exemption from the 1:4 Thai employee quota; faster processing via the One Start One Stop Investment Center (OSOS) ; potential for 100% foreign ownership .

5.2 The Destination Thailand Visa (DTV)

Introduced in 2024, the DTV is designed for the modern remote workforce. It is not a replacement for the Non-B visa if you are employed by a Thai company.

Who it's for: Digital nomads, freelancers, Muay Thai students, and participants in Thai cultural activities .

Key Benefit: 5-year validity, 180-day stays, and permission to work for foreign employers without a Thai work permit .

5.3 The Long-Term Resident (LTR) Visa

For highly skilled professionals or wealthy individuals, the LTR offers a 10-year visa with tax benefits (17% flat rate) . It is suited for remote workers earning over $80,000/year or retirees with substantial pensions .

6. Compliance and Obligations

Once residing in Thailand on a long-stay visa, foreigners must adhere to ongoing compliance rules:

90-Day Reporting: Any foreigner staying in Thailand for more than 90 consecutive days must report their address to immigration every 90 days (online or in-person). Failure results in a 2,000 THB fine .

Re-Entry Permit: A one-year extension of stay is automatically cancelled upon exiting Thailand unless a Re-Entry Permit (Single: 1,000 THB, Multiple: 3,800 THB) is obtained beforehand.

Conclusion

Navigating the Thai Business Visa system in 2026 requires understanding the distinction between the Non-B visa (permission to stay) and the work permit (permission to work). The process is employer-driven, requiring the Thai company to meet strict capital and quota requirements. For entrepreneurs, the BOI route offers superior flexibility, while digital nomads should look toward the new DTV visa. Proper planning and legal compliance are essential to avoiding fines, deportation, or blacklisting.