
SIAC Consulting Co. Ltd
Business Visa (Non-B)
Thailand Non-Immigrant “B” Visa (Business & Work) – 2025 Guide
The Thailand Non-Immigrant “B” Visa is required for foreigners aiming to work, invest, or run a business in Thailand. Here’s a concise overview of types, documents, application process, and key rules.
Overview
This visa, issued by Royal Thai Embassies or Consulates, is necessary before starting work or setting up a company in Thailand.
Visa Types
90-Day Single Entry: Stay up to 90 days; leaving cancels the visa unless you have a re-entry permit.
1-Year Multiple Entry: Stay 90 days per visit with unlimited re-entries for one year.
Fees
2,000 THB — Single Entry (3 months)
5,000 THB — Multiple Entry (1 year)
Required Documents
1. General Requirements:
Passport (valid ≥ 6 months)
Visa application form
Recent 4×6 cm photo
Proof of funds: 20,000 THB (individual) / 40,000 THB (family)
Travel itinerary
Visa fee payment
2. Additional Documents by Purpose:
A. Employment
Approval letter (Form WP3) from Ministry of Labour
Work permit copy (if previously employed)
Employer’s documents (registration, financials, etc.)
Police clearance (if required)
B. Business/Investment
Letter from home company
Invitation from Thai partner
Proof of correspondence and financials
Thai partner’s documents (registration, tax forms, etc.)
C. Teaching
Employment letter from a school
Approval from education authority
Diplomas/certificates and resume
School registration and shareholder list
Police clearance (if required)
Application Process
Prepare documents and notarize non-Thai/English files.
Apply at a Thai Embassy/Consulate.
Pay fee — 2,000 THB (single) or 5,000 THB (multiple).
Wait 5–10 business days for approval.
Enter Thailand and apply for a work permit.
After Arrival
Work Permit: Apply at the Department of Employment with visa and company documents.
Visa Extension: Apply for a 1-year extension before the 90-day limit.
Family Members: Spouse and unmarried children under 20 can apply for a Non-Immigrant “O” Visa.
One-Stop Service Centre (Bangkok)
Located at Chamchuri Square, offers extensions and work permits for qualified companies and investors.
FAQs
Processing time: 5–10 business days.
Start working immediately? No, a work permit is needed.
Apply from Thailand? Usually abroad, but some conversions are possible.
Path to Permanent Residency? Yes, after 3 consecutive years on a B Visa.
Quick Summary
Visa Type | Duration | Entry | Work Permit | Notes |
|---|---|---|---|---|
90-Day B | 90 days | Single | Required | Pre-entry application |
1-Year B | 1 year | Multiple | Required | Exit every 90 days |
Final Tip
To navigate the strict paperwork for working or starting a business in Thailand, consider hiring a visa consultant or Thai law firm to ensure compliance and avoid rejections.

Siac Consulting Experts
Specializes in Thai company formation for foreign entrepreneurs, with expertise in BOI registration, and ongoing corporate compliance.

Stay up-to-date
Helpful Links
Business Visa (Non-B)
Thailand Non-Immigrant “B” Visa (Business & Work) – 2025 Guide
The Thailand Non-Immigrant “B” Visa is required for foreigners aiming to work, invest, or run a business in Thailand. Here’s a concise overview of types, documents, application process, and key rules.
Overview
This visa, issued by Royal Thai Embassies or Consulates, is necessary before starting work or setting up a company in Thailand.
Visa Types
90-Day Single Entry: Stay up to 90 days; leaving cancels the visa unless you have a re-entry permit.
1-Year Multiple Entry: Stay 90 days per visit with unlimited re-entries for one year.
Fees
2,000 THB — Single Entry (3 months)
5,000 THB — Multiple Entry (1 year)
Required Documents
1. General Requirements:
Passport (valid ≥ 6 months)
Visa application form
Recent 4×6 cm photo
Proof of funds: 20,000 THB (individual) / 40,000 THB (family)
Travel itinerary
Visa fee payment
2. Additional Documents by Purpose:
A. Employment
Approval letter (Form WP3) from Ministry of Labour
Work permit copy (if previously employed)
Employer’s documents (registration, financials, etc.)
Police clearance (if required)
B. Business/Investment
Letter from home company
Invitation from Thai partner
Proof of correspondence and financials
Thai partner’s documents (registration, tax forms, etc.)
C. Teaching
Employment letter from a school
Approval from education authority
Diplomas/certificates and resume
School registration and shareholder list
Police clearance (if required)
Application Process
Prepare documents and notarize non-Thai/English files.
Apply at a Thai Embassy/Consulate.
Pay fee — 2,000 THB (single) or 5,000 THB (multiple).
Wait 5–10 business days for approval.
Enter Thailand and apply for a work permit.
After Arrival
Work Permit: Apply at the Department of Employment with visa and company documents.
Visa Extension: Apply for a 1-year extension before the 90-day limit.
Family Members: Spouse and unmarried children under 20 can apply for a Non-Immigrant “O” Visa.
One-Stop Service Centre (Bangkok)
Located at Chamchuri Square, offers extensions and work permits for qualified companies and investors.
FAQs
Processing time: 5–10 business days.
Start working immediately? No, a work permit is needed.
Apply from Thailand? Usually abroad, but some conversions are possible.
Path to Permanent Residency? Yes, after 3 consecutive years on a B Visa.
Quick Summary
Visa Type | Duration | Entry | Work Permit | Notes |
|---|---|---|---|---|
90-Day B | 90 days | Single | Required | Pre-entry application |
1-Year B | 1 year | Multiple | Required | Exit every 90 days |
Final Tip
To navigate the strict paperwork for working or starting a business in Thailand, consider hiring a visa consultant or Thai law firm to ensure compliance and avoid rejections.
About Me


Siac Consulting Experts
Specializes in Thai company formation for foreign entrepreneurs, with expertise in BOI registration, and ongoing corporate compliance.
Stay up-to-date
Helpful Links
SIAC Consulting Co. Ltd
Business Visa (Non-B)
Mental Health Matters: Traveling and Coping with Anxiety
Thailand Non-Immigrant “B” Visa (Business & Work) – 2025 Guide
The Thailand Non-Immigrant “B” Visa is required for foreigners aiming to work, invest, or run a business in Thailand. Here’s a concise overview of types, documents, application process, and key rules.
Overview
This visa, issued by Royal Thai Embassies or Consulates, is necessary before starting work or setting up a company in Thailand.
Visa Types
90-Day Single Entry: Stay up to 90 days; leaving cancels the visa unless you have a re-entry permit.
1-Year Multiple Entry: Stay 90 days per visit with unlimited re-entries for one year.
Fees
2,000 THB — Single Entry (3 months)
5,000 THB — Multiple Entry (1 year)
Required Documents
1. General Requirements:
Passport (valid ≥ 6 months)
Visa application form
Recent 4×6 cm photo
Proof of funds: 20,000 THB (individual) / 40,000 THB (family)
Travel itinerary
Visa fee payment
2. Additional Documents by Purpose:
A. Employment
Approval letter (Form WP3) from Ministry of Labour
Work permit copy (if previously employed)
Employer’s documents (registration, financials, etc.)
Police clearance (if required)
B. Business/Investment
Letter from home company
Invitation from Thai partner
Proof of correspondence and financials
Thai partner’s documents (registration, tax forms, etc.)
C. Teaching
Employment letter from a school
Approval from education authority
Diplomas/certificates and resume
School registration and shareholder list
Police clearance (if required)
Application Process
Prepare documents and notarize non-Thai/English files.
Apply at a Thai Embassy/Consulate.
Pay fee — 2,000 THB (single) or 5,000 THB (multiple).
Wait 5–10 business days for approval.
Enter Thailand and apply for a work permit.
After Arrival
Work Permit: Apply at the Department of Employment with visa and company documents.
Visa Extension: Apply for a 1-year extension before the 90-day limit.
Family Members: Spouse and unmarried children under 20 can apply for a Non-Immigrant “O” Visa.
One-Stop Service Centre (Bangkok)
Located at Chamchuri Square, offers extensions and work permits for qualified companies and investors.
FAQs
Processing time: 5–10 business days.
Start working immediately? No, a work permit is needed.
Apply from Thailand? Usually abroad, but some conversions are possible.
Path to Permanent Residency? Yes, after 3 consecutive years on a B Visa.
Quick Summary
Visa Type | Duration | Entry | Work Permit | Notes |
|---|---|---|---|---|
90-Day B | 90 days | Single | Required | Pre-entry application |
1-Year B | 1 year | Multiple | Required | Exit every 90 days |
Final Tip
To navigate the strict paperwork for working or starting a business in Thailand, consider hiring a visa consultant or Thai law firm to ensure compliance and avoid rejections.
Stay up-to-date
Helpful Links
































