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Thailand Non-B business visa: requirements and process
Quick answer
- The Non-B gives an immigration basis to be in Thailand for employment or business. It is not itself permission to start work.
- Legal permission to work generally comes from a work permit or a statutory exemption.
- Employer changes do not transfer your visa or work permit automatically.
- Job titles and company details must match across every document.
Who uses a Non-B
- People employed by a Thai company or qualifying organisation
- Company directors and business visitors whose activities need Non-B status
- Teachers and other professionals sponsored by an eligible employer
- Applicants entering to complete a work-permit process, where the route allows it
Visa versus work permit
The visa governs entry, and the stay recorded at entry sets your initial period. The work permit is what authorises the actual work. Check that your work authorisation is active and covers your employer, location, occupation and duties before you start.
Documents
- Applicant: passport, photo, proof of residence, travel details and financial evidence, though lists vary by post and case
- Sponsor: invitation or employment letter, company registration and shareholder information, tax and VAT records, evidence of office premises and details of the position
- Capital, Thai-staff ratios and financial records depend on the procedure or exemption that applies. They are not universal rules.
Step by step
- Define the exact business or employment purpose.
- Confirm the sponsor and the role are eligible.
- Get the current checklist from the Thai e-Visa system or the competent embassy.
- Apply and answer any requests for more evidence.
- After entry, complete the work-permit and extension steps before your stay expires.
Extensions and changing employers
- An employment- or business-based extension is a separate application to immigration and may need updated company, tax, salary and work-permit evidence.
- A new contract does not transfer your existing permission, and changing employer does not transfer it to the new company.
- Review cancellation dates and replacement applications, including for dependants, before an employer change or termination, because the end of employment can quickly affect your status.
Pitfalls
- Inconsistent job titles across visa, contract and company documents
- Old, incomplete or unsigned company papers
- Applying under a category that does not match your real activity
- Not allowing enough time between entry, work-permit steps and stay expiry
Frequently asked questions
Does a Non-B visa let me work in Thailand?
Not by itself. You also need a work permit or a statutory exemption.
Does my work permit move with me if I change employer?
No. Changing employer does not transfer your permission automatically.
Where do I get the current Non-B checklist?
From the Thai e-Visa system or the Thai embassy or consulate handling your application.
Official sources
This guide is general information, not legal advice or an official immigration decision. Requirements, fees and procedures can change, and officers have discretion, so check current rules with the relevant Thai authority before you apply.
Related guides
Marriage & family (Non-O)
How the Thai marriage and family Non-O visa works: eligibility, 400,000 THB or 40,000 THB income rules, documents, renewals and common pitfalls.
LTR visa
The 10-year Long-Term Resident visa: four categories, who it suits, benefits like annual reporting, BOI administration, the THB 50,000 fee and pitfalls.
Extensions & 90-day reports
How Thai visa extensions work, why visa runs no longer suit long stays, re-entry permits, 90-day reporting, TM30 and overstay fines of 500 THB a day.
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