I switched my tourist to a Non B visa DEcember 8th or so and it must be extended ( or notifiied of 90 days) for the first time March 9th. What form are needed? Anything else? The veteran teachers have sent it in the mail to Chiang Mai Immigration to notify for 90 days. Can I do this? My head is spinning a bit. Thanks

Sorry but you have not given enough information for an answer.

What is needed to know to answer your question is ...

You are on a single entry non imm B?

Your "permission to stay" stamp has a one year date from when you rec'd it?

If those two statements are "yes" then all you need do is go to Immigration with your passport and fill out a form within the week stamped for your 90 days.

If those two questions are not "yes" then more info is needed and extension may or may not be possible.

Two different things here.

• extension of the permission of temporary stay
• 90 days address notification