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Answered7 months ago

What should I know about extending a Non-O visa based on marriage at Chiang Mai Immigration?

Bruce *********
asked Apr 8, 2026
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Today I went to Chiang Mai Immigration intending to extend my Non-O visa based on a Thai Wife. I arrived at 08:15 and got queue number C-17. They opened at 08:30. At 09:30, after processing queue number C-10, they announced they were already full for today but we could still have our paperwork checked today, for review at a later date. When my number was called the IO said my paperwork was well prepared but I had used an out of date form STM.2 which I got from their website (the current form is in the photo). The only other issue was that some of our signatures were too low on the paper and we need to sign again higher on the paper. I was told to come back on April 17, after Songkran as my current visa expires on April 28.
Answer summary
The user shared their experience at Chiang Mai Immigration while trying to extend their Non-O visa due to having a Thai spouse. They arrived early but found out that the daily quota was already filled; however, they were able to have their paperwork reviewed. The immigration officer pointed out that they had used an outdated form and needed their signatures to be higher on the page. The user was advised to return after Songkran since their current visa expires shortly after.
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Tod *********
Tod *********
and on that note I see this post has served it's purpose.. Thanks for that update,

remember people check with your immigration office to get the correct forms etc before you go for your extension OR just fill them out once you're there
Robert ************
Robert ************
That's Thailand and that's why you go to IO up to 30 days prior .

Again this post serves that reminder .

Thank you n Happy days
Claus *********
Claus *********
@Robert ***********
well, not always possible..
Yann ***********
Yann ***********
Yes I always go to immigration to get the latest a week before. Online versions are not updated.
Daryl ********
Daryl ********
I had to return 5 times as the requests for forms changed each time I arrived
Dave **********
Dave **********
That office was busy today. I went for a residence certificate, all the seats were taken and a line down the stairs. Probably because they will be closed for Songkran next week.
Ron ******
Ron ******
@Dave *********
Imagine what they'll be like after Songkran.
Pete ******
Pete ******
Thanks for the heads up!
Gregory ******
Gregory ******
Thanks fr the update
Wannikea *********
Wannikea *********
Always get the latest version of a form directly from the office.
Parrot ********
Parrot ********
I went there 2 of April, they told me come back in 20 of April because the q that time is already on 16 April. So lucky that they allow you to do it.
Ellie *******
Ellie *******
Thank you for the report.

Dear members, this post is about Chiang Mai, not about any other.

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