What is the process for transferring a Visa from an old passport to a new passport in Thailand?

@Tod ********

I went with just the 2 British passports old and new and they transferred it all into the new one. For me no mess no fuss. Maybe I was lucky

@Jonas ************

, You can enter Thailand using both passports when you get a new one when you are out of Thailand.

You are supposed to have the correct documents to stay in Thailand: the right passport with the right permission inside.

The timing of transferring could depend on what you need to do at the local office next. You can go to the office asap. anyway, You must transfer stamps at least before earlier one of the dates of, your next 90-day report or extension application. Even you do both of them in one visit. They have you transfer stamps first, then let you apply for an extension or submit a 90-day report.

We advise people to transfer stamps earlier rather than later.

@Louw *******

you sound like you don't have ANY Non-B anything and if you were to read the stamp in your passport you'd see that it says "EXTENSION OF STAY PERMITTED UNTIL" and has the date of Nov 7th on it

That is NOT a visa, and you need to go to the office that gave you that stamp follow the sheet that Ellie provided to get the extension and re-entry permit transferred to the new passport