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Learn more about Business Visa Extension

Extending your Business Visa in Thailand is essential for foreigners who wish to continue working or conducting business beyond the initial 90-day period. Typically issued under the Non-Immigrant B Visa, this extension allows you to stay legally in Thailand for up to one year. The process is governed by Thai immigration law and requires both employer and employee to provide supporting documents. Whether you’re renewing for the first time or planning to stay long-term, preparing your Business Visa Extension Thailand properly helps avoid rejections and delays. The procedure usually takes 5 working days and must be completed before your current visa expires. If you plan to work in Thailand, this step is also crucial for obtaining or renewing your work permit. Our guide covers everything you need to know to extend your business visa in Thailand smoothly and legally.

Table of contents


What is a Business Visa extension in Thailand?

A Business Visa extension in Thailand allows holders of a Non-Immigrant B Visa to legally remain in the country beyond the initial 90-day period. This visa category is specifically designed for individuals working or investing in Thai companies. The extension ensures uninterrupted legal stay for business purposes and allows foreign employees and employers to comply with immigration laws. Extensions are governed by the Thai Immigration Act and enforced by the Immigration Bureau. You can read more on the official Thai Immigration Bureau website.

Who needs to extend a Non-Immigrant B Visa?

If you entered Thailand with a 90-day Non-Immigrant B Visa for work, business meetings, or corporate missions, you’ll need to apply for a Business Visa extension to remain legally in the country. This includes:

➤ Employees of Thai-based companies
➤ Entrepreneurs setting up a Thai business
➤ Foreign representatives of international corporations

Failure to extend your visa may result in penalties or deportation, as outlined by Thai immigration law.

When should I apply for a business visa extension?

1. Ideal Timeline

You should apply at least 15 days before your current Business Visa expires. The processing time is typically 5 business days but can vary.

2. Important Tip

Do not wait until the last minute. Missing the deadline may force you to leave the country or apply for a new visa from abroad.

What documents are required for a business visa extension in Thailand?

The application requires detailed documentation from both the employee and the employer.

1. From the Applicant:

➤ Passport (with visa stamp)
➤ Digital Travel Card (DTC) replaces the TM.6 card at most border entries since 2022
➤ TM.7 application form
➤ Recent passport-sized photos (4x6 cm)

2. From the Employer:

➤ Company registration certificate
➤ List of shareholders
➤ Latest financial statements
➤ VAT registration
➤ Employment contract
➤ Valid Work Permit or WP renewal receipt

Be sure all documents are signed, stamped, and translated (if applicable).

How long can my Business Visa be extended?

In Thailand, a Business Visa Extension is typically granted for a maximum of one year per application. However, the actual duration may vary depending on key factors such as the sponsoring company’s financial health, compliance with Thai labor and tax laws, the length of your employment contract, and the immigration officer’s discretion. To extend Non-B visa Thailand, your employer must demonstrate continued legal compliance  including up-to-date tax filings, audited financial records, and active business operations. The extension process also requires proof that your role remains valid and essential within the company. Keep in mind that each extension must be renewed annually, and any discrepancies, like unpaid taxes or failure to maintain the required number of Thai employees, may result in rejection. For official procedures and visa policy updates, consult the Ministry of Foreign Affairs of Thailand.

What are the steps to extend a business visa in Thailand?

Follow these steps to apply for a Business Visa extension in Thailand:

1. Prepare the required documents
2. Submit your application at the Thai Immigration Office
3. Pay the government processing fee (around THB 1,900)
4. Wait for the approval (within five business days)

Can I travel while waiting for my visa extension approval?

1. Travel Restrictions During Visa Extension Processing

If your Business Visa extension application is currently under review, you are not allowed to leave Thailand until the immigration authorities issue a decision. Doing so without proper authorization will result in the automatic cancellation of your visa extension application. This can jeopardize your legal status in Thailand and force you to start the visa process over from abroad causing delays and potentially affecting your employment. During this waiting period, immigration officials retain your passport while processing the extension, which adds another layer of complexity if you plan to travel. It’s important to plan accordingly and avoid any non-essential travel during this time to maintain legal compliance.

2. How to Leave Thailand Legally: Re-entry Permit

If traveling is absolutely necessary while your Business Visa extension is still valid, you must obtain a Re-entry Permit before exiting the country. This permit protects the validity of your current visa, allowing you to leave and return without voiding your immigration status. There are two types of re-entry permits: single and multiple. Choose the one that best fits your travel needs. Applying for a Re-entry Permit is a straightforward process, usually done at your local immigration office or at the airport (before departure). However, we recommend applying in advance to avoid last-minute complications. Don’t let your work permit expire while extending your visa. Ensure seamless continuation of employment. Download the Work Permit Renewal to stay legally authorized to work in Thailand.

How does a Business Visa extension affect my work permit?

In Thailand, your Non-Immigrant B Visa and your work permit are directly linked. If your Business Visa is not extended in time, your work permit automatically becomes invalid, even if it hasn’t yet expired. This means you will no longer be legally allowed to work, and your employer could also face legal consequences under Thai labor laws. To avoid issues, your Business Visa extension must be processed in coordination with your work permit renewal. Any discrepancy can lead to delays or rejections from the authorities. For official rules and procedures, you can also refer to the Department of Employment Ministry of Labour.

What happens if I overstay or delay my visa extension?

Overstaying your visa can result in:

➤ Daily fines of THB 500
➤ Travel bans from Thailand
➤ Deportation

You must extend your visa before it expires to avoid immigration issues. Thai authorities are strict about visa compliance. If your current visa no longer meets your business or legal needs, switching to the right category can save you penalties and risk. Download the Change of Visa document to legally transition to the most appropriate Thai visa type.

Conclusion: Why Choose Themis Partner for Your Thailand Visa Extension?

Navigating a Business Visa Extension Thailand isn’t just about paperwork it’s about staying compliant with Thai immigration law at every step. From verifying company tax status to syncing your visa with your work permit and 90-day reporting, even minor errors can lead to serious legal issues. At Themis Partner, our legal team ensures your extension process is handled accurately and efficiently. We offer clear legal guidance, prepare all required documents, and liaise directly with Thai authorities to reduce risks of rejection. Start your extension process today with confidence download your Business Visa Extension Thailand application and let our experts handle the rest.

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