There are 2 types of Re-Entry permit, which are as follows.

Single Re-Entry: (Fee: 1,000 Baht), for more information please access : https://www.immigration.go.th/content/ค่าธรรมเนียม

Place to apply

1.Suvarnabhumi International Airport

The Immigration office is available 24 hours, foreigners are required to arrive the airport earlier and inform officials to apply for Single Re-Entry Permit.

2. One Stop Service for Visa and Work Permit

Particular services only for foreigners carrying out duties relating to the specific law : Immigration Act , Petroleum Act / Board of Investment Act / Industrial Estate Authority of Thailand Act.

Please prepare the form TM.8 (see link) https://www.immigration.go.th/download/

and all required documents.

Address: 18th Floor, Chamchuri Square Building, Phayathai Road,

Pathumwan, Bangkok 10330 
For location : http://osos.boi.go.th/EN/contact/

3. Immigration Division 1

For Non-BOI promoted company/General case

Please prepare the form TM.8 (see link) 

https://www.immigration.go.th/download/ and all required documents.

Address: Chalermprakiat Government Complex

120 MOO 3, CHAENGWATTANA ROAD,SOI 7, LAKSI, BANGKOK. 10210

Multiple Re-Entry : (Fee: 3,800 Baht) for more information please access : https://division1.immigration.go.th/index

Place to apply

1. One Stop Service for Visa and Work Permit

Particular services only for foreigners carrying out duties relating to the specific law : Immigration Act , Petroleum Act / Board of Investment Act / Industrial Estate Authority of Thailand Act.

Please prepare the form TM.8 (see link) 

https://www.immigration.go.th/download/ and all required documents.

Address:18th Floor, Chamchuri Square Building, Phayathai Road,

Pathumwan, Bangkok 10330, For location : http://osos.boi.go.th/EN/contact/

2. Immigration Division 1

For Non-BOI promoted company/General case

Please prepare the form TM.8 (see link)

https://www.immigration.go.th/download/ and all required documents.

Address:Chalermprakiat Government Complex

120 MOO 3, CHAENGWATTANA ROAD,SOI 7, LAKSI, BANGKOK. 10210

For more details of the Immigration Division 1 and map, please access to the link: https://division1.immigration.go.th/content/contact

Remark:

Please bring the photo size 4*6 cm (taken not more than 6 months)

in order to apply for Re-Entry Permit.

Source: Immigration Division 1, Immigration Bureau

Web link: https://division1.immigration.go.th/index

Info as of December 2014

1.Visa Issuance

1. Foreigners who wish to work, conduct business or undertake investment activities in Thailand must apply for a Non-Immigrant Visa at the Royal Thai Embassies or Royal Thai Consulates-General.Various categories of the Non-Immigrant Visa are currently provided to meet the needs and qualifications of individual business persons. These include business visa Category "B", business-approved visa Category "B-A" and investment and business visa Category "IB". Holder of this type of visa wishing to work in Thailand must be granted a work permit before starting work.The visa fee is 2,000 Baht for single-entry with three-month validity and 5,000 Baht for multiple entries with one-year validity.
2. Nationals of certain countries are required to apply for a visa only at the Royal Thai Embassy or Royal Thai Consulate-General in their home/residence country or at the designated Royal Thai Embassy or Royal Thai Consulate-General. Travelers are advised to contact the nearest Royal Thai Embassy or Consulate-General to find out where they may apply for a visa to Thailand before departure.For more information on contact details and locations of the Royal Thai Embassies and Royal Thai Consulates-General, see: http://www.thaiembassy.org
   
   

2.Application for Visa

1. Non-Immigrant Visa Category "B" (Business Visa) is issued to applicants who wish to enter the Kingdom to work or to conduct business.
1. Foreigners who wish to work in Thailand must provide the following documents:

• Passport or travel document with validity of not less than 6 months.
• Completed visa application form.
• Recent passport-sized photograph (4x6cm) of the applicant taken within the past 6 months.
• Evidence of adequate finance (20,000 Baht per person and 40,000 Baht per family).
• Letter of approval from the Ministry of Labour. To obtain this letter, the applicant's prospective employer in Thailand is required to submit Form WP3 at the Office of Foreign Workers Administration, Department of Employment, Ministry of Labour Tel.02-2452745, or at the Provincial Employment Office in his or her respective province. More information is available at https://www.doe.go.th/alien
  
  
  
• Copy of Work Permit issued by the Ministry of Labour and alien income tax or Por Ngor Dor91 (only in the case where applicant has previously worked in Thailand).
• Corporate documents of hiring company in Thailand such as:




• business registration and business license
• list of shareholders
• company profile
• details of business operation
• list of foreign workers stating names, nationalities and positions
• map indicating location of the company
• balance sheet, statement of Income Tax and Business Tax (Por Ngor Dor50and Por Ngor Dor30of the latest year)
• value-added tax registration (Por Por20)




• Document indicating the number of foreign tourists (for tourism business only), or document indicating export transactions issued by banks (for export business only).
• An alien who receives a Non-Immigrant visa can work in Thailand once he or she is being granted a work permit.An alien in violation of the Immigration Act B.E.2522 (1979)concerning taking up employment without work permit or the Royal Decree B.E.2522 (1979)concerning holding employment in certain restricted occupations and professions shall be prosecuted and imprisoned or fined, or shall face both penalties.
• It is recommended that the applicant should apply for visa at the Thai Embassy/ Consulate in the country where he/she has the residence

• Foreigners who wish to conduct business in Thailand must provide the following documents:
• Passport or travel document with a validity of not less than 6 months.
• Completed application form.
• Recent passport-sized photograph (4x6cm) photograph of the applicant taken within the past 6 months.
• Evidence of adequate finance (20,000 Baht per person and 40,000 Baht per family) for the duration of stay in Thailand.
• Letter from the applicant's company indicating the applicant's position, length of employment, salary and purpose of visit(s) to Thailand.
• Documents showing correspondence with business partners in Thailand.
• Evidence of financial status in the case where the applicant is self-employed.
• Letter of invitation from trading or associated partners/companies in Thailand.
• Corporate documents of associated partners/companies in Thailand such as:




• business registration and business license
• list of shareholders
• company profile
• details of business operation
• map indicating location of the company
• balance sheet, statement of Income Tax and Business Tax (Por Ngor Dor50and Por Ngor Dor30)of the latest year
• value-added tax registration (Por Por20)

• Copies of company documents must be signed by the Board of Directors or authorized managing director and affix seal of company.
• Additional documents may be requested as and when necessary.In the absence of a required document, applicant must provide a letter explaining the unavailability of such document.Applicant must endorse on each and every page of the submitted copies of documentation.Documents in foreign languages must be translated into Thai and should be notorious by notary organs or by the applicant's diplomatic or consular mission.
• Holder of this type of visa is entitled to stay in Thailand for a maximum period of 90 days. He or she may apply for an extension of stay at the Office of the Immigration Bureau and may be granted such extension for a period of one year from the date of first entry into Thailand.
• Non-Immigrant Visa category "B-A" (Business Approved Visa)The granting of such visa to qualified applicants is under the jurisdiction of the Office of the Immigration Bureau in Bangkok.The applicant's associated company in which he or she will invest in or conduct business with may apply for this type of visa on behalf of the applicant at the Office of the Immigration Bureau. Once the application is approved, the Immigration Bureau will advise the concerned Royal Thai Embassy or Royal Consulate-General via the Ministry of Foreign Affairs to issue the visa to the applicant.The holder of this category "B-A" visa will be permitted to stay for a period of one year from the date of first entry into the Kingdom.
• Non-Immigrant Visa Category "IB" (Investment and Business Visa)is issued to foreign citizens employed to work on investment projects which are under the auspices of the Board of Investment of Thailand (BOI). Such projects must be involved in or bring benefit to Thailand in the following ways:
• Export-promotion
• Increasing employment
• Utilizing local raw materials
• Projects engaging the provinces
• Encouraging technology transfer to Thai nationals
• Not hindering existing domestic businesses

• Non-Immigrant Visa Category "B" (Teaching) Foreigners who intend to take up employment as school teachers at the levels below university level in Thailand must submit the following required documents:
• Passport or travel document with validity of not less than 6 months
• Completed visa application form
• Recent passport-sized photograph (4x6cm) of the applicant taken within the past 6 months.
• Letter of acceptance from employing institute or school in Thailand.
• Letter of approval from government agencies such as the Office of the Private Education Commission, the Office of the Basic Education Commission.
• Evidence of educational qualification such as diplomas or teaching certificates.
• School license or business registration, list of shareholders and school profile.
• Applicant's resume.
• Police certificate verifying that applicant has no criminal record or equivalents or letter issued by authorized agencies in applicant's country. (The requirement of the submission of such police certificate is optional. The applicant must submit it if consular officer requests he/she to do so. This requirement is effective as from May 2007)

3.Additional Information

1. Upon entry into the Kingdom, applicant or his or her appointed representatives must apply for a work permit at the Office of Foreign Workers Administration, Department of Employment, Ministry of Labour in which the applicant will be obligated to pay income tax accordingly. If the applicant's associated company is located in the provinces, the applicant must apply at the Employment Office of that province.
2. Applicant's family members (i.e., spouse, parents and children who are unmarried and under 20 years old) are eligible to apply for a Non-Immigrant Visa (category "O") and will be allowed to stay for a period of 90 days but no longer than 1 year.
3. Foreign citizens who hold a Transit Visa ("TS") or Tourist Visa("TR") and wish to engage in business activities in Thailand may apply for a change of type of visa (e.g., from Tourist Visa to Non-Immigrant Visa) at the Office of the Immigration Bureau Office located at Government Center B, Chaengwattana Soi7, Laksi, Bangkok10210, Tel0-2141-9889, https://www.immigration.go.th/index The granting of change of type of visa and extension of stay is at the discretion of the immigration officer.
   
   

4.One Stop Service Centre for Visas and Work Permits

1. The One Stop Service Centre for Visas and Work Permits was established on 1 July 1997 by authority of the Regulations of the Office of Prime Minister promulgated on 30 June 1997.The objective of this centre is to simplify visa extension and permit issuance procedures to create a good investment environment. It aims to facilitate applications of visa extension and work permits (e.g., stay permission, re-entry permit, work permit). The Centre is located on Chamchuree Square Building, Floor18, Phatumwan, Bangkok.
2. Foreigners who are eligible to apply for visa extension and work permits at the One Stop Service Centre are:

• Foreigner who is an executive or expert with privileges accorded to them by the following laws:




• Investment Promotion Act B.E.2520 (1977)
• Petroleum Act B.E.2514 (1971)
• Industrial Estate Authority of Thailand Act B.E.2522 (1979)




• Foreigner who is an investor.




• If investing not less than 2 million Baht, he or she will be granted a 1 year permit.
• If investing not less than 10 million Baht, he or she will be granted a 2 year permit.




• Foreigner who is an executive or expert.
• Foreigner's associated company should be registered with capital or possess asset of not less than 30 million Baht.




• Foreigner who is member of the foreign press must present a letter from the Ministry of Foreign Affairs and a copy of an ID Press Card issued by the Department of Public Relations.
• Foreigner who is a researcher or developer on science and technology.
• Foreigner who is employed in a branch office of an overseas bank, foreign banking office of an overseas bank, provincial foreign banking office of an overseas bank or a representative office of foreign bank in which all offices are certified by the Bank of Thailand.
• Foreigner who works on the necessary and urgent basis for a period of no longer than 15 days.
• Foreigner who is an official of the representative office for foreign juristic persons concerning the International Trading Business and Regional Office of Transnational Corporation in accordance to the Foreign Business Act B.E.2542 (1999).
• Foreigner who is an expert on information technology.
• Foreigner who works at regional operating headquarters.