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What are my options for extending my stay in Thailand after my tourist visa expires now that I have a Thai passport?
Thai passportvisa extensiondual citizenshipresidencyThailand immigrationborder runUS passportThai citizen rights
Mar 15, 2026
2 months ago
Kim **********
ORIGINAL POSTERTOURIST VISA
I'm currently on a 3mth only visa from the US & recently received my Thai national passport in BKK.
What's the best way to stay longer if I should decide after my 3mths is up?
Leave the country & enter as a Thai national? Where's the quickest boarder run & back? Costs?
If I choose to stay longer, does that effect my entry back to the US with my US passport?
I'm currently on a 3mth only visa from the US & recently received my Thai national passport in BKK.
What's the best way to stay longer if I should decide after my 3mths is up?
Leave the country & enter as a Thai national? Where's the quickest boarder run & back? Costs?
If I choose to stay longer, does that effect my entry back to the US with my US passport?
TLDR : Answer Summary
The original poster has a 3-month tourist visa from the US and recently acquired a Thai passport. They seek advice on extending their stay in Thailand after the visa expires. Responses from the community clarify that with a Thai passport, they can remain in Thailand indefinitely. It's recommended to leave Thailand using the US passport and re-enter with the Thai passport to avoid visa issues. The advice emphasizes the importance of using the same passport for entry and exit to prevent complications.
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Dca *****
Remember, you can only "switch" passports (dual citizenship, dual passports) by Air
NOT via Land Borders as the immigration officers of Both countries on both sides of the Land Borders are going to require both Exit and Entry Stamps inside the same passport
so, fly out of Thailand on your current passport (U.S. Passport), then fly back into Thailand on your Thai Passport
NOT via Land Borders as the immigration officers of Both countries on both sides of the Land Borders are going to require both Exit and Entry Stamps inside the same passport
so, fly out of Thailand on your current passport (U.S. Passport), then fly back into Thailand on your Thai Passport
Kim **********
ORIGINAL POSTERDca Dca after reading the article, I do NOT need to leave when my 90 days are up, correct? Am I reading this right? I just simply show my Thai ID & passport, when I leave BKK, correct?
Dca *****
Kim Prapavat Generally yes, but the name in your Foreign Passport needs to be the same name as in your Thai Passport
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Dca *****
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Preben *******************
What are you talking about?
You say you have received a thai national passport, so ofcourse you can stay in Thailand forever.
You say you have received a thai national passport, so ofcourse you can stay in Thailand forever.
Dca *****
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Paul ***********
Dca Dca
Thanks for posting this and making it clear to all the FB experts (including me).
Thanks for posting this and making it clear to all the FB experts (including me).
Kim **********
ORIGINAL POSTERDca Dca very helpful article, thank you 🙏
Reply to
Kim **********
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Jesper *******
You should clarify with the immigration office and not here on FB .....since u already have a thai passport u are now thai and can stay here forever without any issues....it would be better for u to use your US passport while entering the US
Graham ******
Jesper Ngiam Not forever as the current entry was with a US passport as explained above, an extension is required to avoid overstay
Reply to
Graham ******
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Paul *******
You can now line up in the Thai passport line YIPEEE!
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5Bazaar******
I think you need to exit Thailand on your US passport before your current visa expires..
Otherwise you will be listed as overstaying on the US passport so that could pose a problem in the future..
Then you can immediately re-enter Thailand using your Thailand passport and stay as long as you like..
Then when you eventually want to return to the USA then exit on your Thailand passport and enter the US on your US passport..
Otherwise you will be listed as overstaying on the US passport so that could pose a problem in the future..
Then you can immediately re-enter Thailand using your Thailand passport and stay as long as you like..
Then when you eventually want to return to the USA then exit on your Thailand passport and enter the US on your US passport..
Potpon******
You’re Thai you can stay here forever if you want it’s your country
It won’t affect anything in the USA since that’s your country as well
Stay as long as you want in either country or stay out of either country as long as you want
I don’t think you have to do a border run since you’re a citizen and when you leave you depart Thailand on your Thai passport and enter the USA with your USA passport
It won’t affect anything in the USA since that’s your country as well
Stay as long as you want in either country or stay out of either country as long as you want
I don’t think you have to do a border run since you’re a citizen and when you leave you depart Thailand on your Thai passport and enter the USA with your USA passport
Brandon ************
Potpong_Life You cannot leave Thailand on a different passport than you arrived on.
Kim **********
ORIGINAL POSTERThank you for your response, I appreciate it 😊
Reply to
Kim **********
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Paisarn ******************
Leave Thailand with US passport and re-enter with Thai passport. As a national, you can stay as long as you want.
Kim **********
ORIGINAL POSTER@Paisarn *****************
Thank you for your response 🙏Reply to
Kim **********
Reply
Wayne ********
I'm doing a 15 months
Brandon ************
If you now have a Thai passport, you can go to your immigration office and apply for a 1-year Thai Citizen extension. You can do that forever. But next time you leave it'll be much better to use your Thai passport when you return, that way you don't need to worry about visas.
What you do here has nothing to do with your entry to the US.
What you do here has nothing to do with your entry to the US.
Ray *********
@Brandon ***********
is that necessary now that she has a Thai passport?Kim **********
ORIGINAL POSTERThank you Brandon, for your response...
Brandon ************
@Ray ********
She did not enter Thailand as a Thai. She entered with a foreign passport. So she is in Thailand as a foreigner. Until she leaves and enters with her Thai passport, that is how she will be seen by immigration.Ray *********
@Brandon ***********
IMO (and I could be wrong) She is ALWAYS a Thai citizen - assuming she was born here - the passport is just an identity and travel document. Surely she could have entered Thailand with an expired passport?.....or have I missed something.Brandon ************
@Ray ********
Some people were born overseas and can't gather the correct proof to claim their citizenship until they're already in Thailand. But that doesn't change the fact that once someone enters on a specific passport, that's how they are seen by immigration until they exit and enter with a different passport.Ray *********
@Brandon ***********
that is the only circumstance I can think of that applies to this situation. IMO it is more about the airlines checking her in than it is about Immigration - personally, I don't think she would have an issue exiting on her Thai passport..... would it flag her entry on a US passport? I don't know.Graham ******
Ray Bingham If she exited on her Thai passport then she would be on overstay on her US passport
Brandon ************
@Ray ********
they still have biometrics, so yes, it would flag that she entered on a foreign passport.Reply to
Brandon ************
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Andy **********
No, you are Thai. That is enough.
Reply to
Andy **********
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