Do I need to transfer my Thai visa and extension stamp to my new passport before traveling?

@James *****************

probably the best course of action (y)

Good Luck :)

IF you go to the immigration office to transfer your extension of stay stamp to the new passport they will note in it, the original passport number, the visa you had in that passport, and move your current entry stamp and extension to the new passport.

After that you don't need the old one when you exit the country

@Tullio ******

your old passport is always canceled when you replace it. The us consulate punches holes in ours.

BUT

whether the passport is canceled or not has no bearing on whether a visa is valid. In fact visas from some countries can be valid for years longer than some passports.

I know people who have had a year-long multi-entry Non-Immigrant Type visa in their passport who got a new passport, who had their old passport canceled by their consulate when they picked up the new one AND who traveled with BOTH passports when exiting/entering the country getting stamped in and out on the new passport until the visa in the old one expired.

@Tod ********

it’s not incorrect if your old passport is nullified, if it’s not nullified then it’s ok. I experienced the problem I asked my embassy

that is actually incorrect :/ IF you have a valid year-long multi-entry visa (NOT an extension of stay) in your old passport, when you get a new one you travel with BOTH the old and new passports. You will be stamped in&out of thailand on the new passport BUT your valid visa for thailand will be in the old passport.

They do NOT transfer visas (except thai elite and diplomatic ones) to new passports ONLY extensions of stays.