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What is the process for applying for a marriage extension visa at Chaengwattana in Thailand?

Jul 25, 2025
8 days ago
Steve *********
ORIGINAL POSTER
Report on my trip to CW yesterday to apply for my second stay extension based on marriage to a Thai citizen.

Two weeks prior my wife went to Huay Kwang District office to obtain an updated copy of our marriage certificate ( KR2). Easy to do. She just had to show her ID card and a copy of our original certificate. And pay 20 baht per copy of course.

Went to Bangkok Bank in the morning before going to CW for my 2pm appointment. No problem to obtain the bank letter or statement. Didn’t have to fill out any forms committing to keep funds in my account for any period of time. I had kept a balance over 400k for more than 4 months prior anyway but it wasn’t mentioned.

Went to CW for 2pm appointment and was finished and out of the door by 3pm. Went like clockwork. All discussions were between my wife and the IO in Thai and the IO only comment to me was to recommend that I get a new passport before applying next year as my passport expires next September. Back in 21 days to get the extension inked in. Note that IO did not ask for the updated KR2. At the end of the process she took a photo of my wife and I jointly holding up a sign in Thai that my wife said it stated in Thai that we are married so that may have been the necessary confirmation that we are still married. IO stated that my wife could come alone on 15 August to get my extension inked in ( having observed that my mobility isn’t good) but confirmed that I would have to attend in person if I wanted to apply for a RE permit. She suggested that I apply for the RE permit at the airport when I leave which sounds like a plan to me.

In conclusion meticulous preparation paid off and I am attaching my homemade check list in case it helps others. Note for the family photos I provided 6 photos printed 2 per page directly onto glossy photo paper with captions below and she was quite happy with them.
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TLDR : Answer Summary
The post provides a detailed account of a recent visit to the Chaengwattana Immigration Office in Bangkok for a marriage visa extension based on marriage to a Thai citizen. The author describes the preparation steps, including obtaining an updated marriage certificate and bank letter, and shares insights on the smooth appointment process, which involved minimal paperwork. Comments from other users offer additional tips regarding necessary forms, document copies, and variations in processing times at different locations.
Karl *********
This is very good info. I hope it runs as smoothly for me next year ☺️
Bobby **********
Only 21 days to pick up the extension?
Steve *********
ORIGINAL POSTER
@Bobby *********
I think that’s normal for CW. It was the same last year but I believe it’s different for other offices
Bobby **********
@Steve ********
wow that’s great. Yea it’s 30 up here in Chiang Rai.
Andy **********
I also went to Chang Wattana recently for the same extension and would thank Steve for this information. I would add the following.

FORMS

Add STM 10 - Affidavit

STM 11 - Consent form

STM. 9 (The penalties form)

I was asked for updated KR2 and reminded to update again next year.

Documents

Original Visa document

Bring all originals and do two sets of copies. I was asked for a second set and she just took what she wanted from it.

BANK

Only needed letter and updated book on the day.

If you haven't booked an appointment get there as close to 0830am as possible, get your ticket and get your paperwork checked at counter 27. This is really helpful.

I was finished by 10am......very happy

Thanks again Steve and hope the extra info is helpful
John ****
@Andy *********
I'm about to do my 12 month extension for the first time. Do you know if the bank letter/ statement needs to be done on the same day as the appointment or is the day before fine? Thanks for any information you can provide (I'm a little worried about having the correct paperwork)
Ellie *******
@John ***
, It depends on the office. If your local office is CW, bank letter and transaction history can be up to 7 days old, along with the bank book updated on the day of application.
John ****
@Ellie ******
It is indeed CW. Thank you :)
Andy **********
@John ***
Definitely the same day for the letter and the updated bank book......good luck
Steve *********
ORIGINAL POSTER
@Andy *********
Interesting that you were asked for the updated KR2 and I wasn’t. Perhaps it depends on the particular IO. Good point about getting your documents checked at L1 counter 27. I also had to do that.
เดแคลน ***********
@Steve ********
last year I was asked, this year I wasn't asked and im pretty sure it was the same IO
Andy **********
@Steve ********
yes, I'm convinced they make it up as they go along.......random extra things for random people!! Just keep smiling and say yes......it always works
Steve *********
ORIGINAL POSTER
@Andy *********
I will take an updated KR2 along next year just in case. They didn’t ask me for anything that I didn’t already have so that will do for me.
Graeme *******
Yep completely different to Maha Sarakham, that's Thailand, not as much paperwork for me on now 5th time under marriage visa, plus just letter from Embassy showing income. A few pics from us at home, letter from local Amphur showing we are married, house book and pay the required fee then about a 3 week wait

.
Tod *********
really glad it worked out

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