Hello. Few scenarios, bear with me...
1. Can a Non-Imm B single entry 90 day visa, based on invite from a Thai company to conduct business be extended within Thailand at Thai immigration to 1 year (with a multi-reentry permit added later). If so, what are the requirements?
- or -
2. Are the only options a single entry 90 day visa or a multiple entry 1 year visa (with the latter only allowing 90 days maximum per entry during its one year validity)?
A 1 year extension with a muti-reentry permit would be preferable than a muti-entry visa but I don't think that's an option.
Lastly
3. Can the Non-Imm B single entry 90 day visa be converted to a Non-Imm B Multiple entry visa within Thailand? Guessing no but might as well check.
Thanks all.
TLDR : Answer Summary
The Non-Imm B single entry 90-day visa, issued for business purposes, cannot be extended within Thailand to a one-year visa. The options available are only a single-entry 90-day visa or a multiple-entry one-year visa, which allows for multiple entries of up to 90 days each, but does not permit extension from the single-entry visa. Additionally, it is not possible to convert a Non-Imm B single entry visa to a Non-Imm B multiple entry visa while in Thailand.