Answer
- You must apply for a change of visa type at the immigration office, providing a valid reason for the change, such as switching from a tourist visa to a non-immigrant visa.
- Gather required documents, which may include your current visa, passport, completed application forms, and any additional documentation specific to the new visa type.
- Be aware that approval can take time, so plan accordingly and avoid overstaying your current visa.
Immigration note: Entry and extension rules depend on nationality and purpose and can change. Check current Thai government or immigration requirements before relying on an older answer.
Updated 2025-09-22