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What are the requirements and tips for successfully obtaining a 1-year O-A visa extension in Thailand?

Thai Visa Extension O A Visa Documents Required for Visa Immigration in Thailand Expat Experiences Bank Requirements for Visa LTR Visa TM30 Form Medical Certificate for Visa Online Visa Process

Oct 27, 2025

6 months ago

Steve ****

ORIGINAL POSTER

Well that was fun. 

1 year O A extension at Nonthaburi

Everything by the book. Went a week before and got a printed list of the documents required. Nothing unusual. Bank book with today’s date, passport, bank letter, insurance certificate.  

Go to bank to get book updated and letter

Then to office. 

SURPRISE!

also yellow book, wife’s IC (!?), copy of TM30, a 15 minute negation on whether or not a number greater than 800k is….greater than….800k

And then a 1 hour wait as the clerk forgets to call that the passport is ready.  

Learnings:

1). Update bank book FIRST. that way if for some odd reason it doesn’t give today’s date you can sort it at the counter -1 stop

2). No matter what the office says for paperwork bring EVERYTHING and make a copy of EVERYTHING. 

anyway, good for another year.  Jan I start the LTR as I really do not want to go thru this rubbish every year.

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TLDR : Answer Summary

A recent experience extending a Thai O A visa highlighted the need for thorough preparation. The individual detailed the required documents, including bank letters and insurance certificates, and emphasized the importance of updating their bank book first to avoid complications. Key takeaways included bringing all possible documentation and making copies to ensure a smooth process. Several commenters shared personal anecdotes regarding their visa extensions, mentioning the advantages of switching to the LTR visa for less hassle and discussing varying procedures across provinces.

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Dac *******

Not sure how other provinces do it but immigration on Koh Samui you must come in 30-45 days before expiration to get an appointment scheduled.

So here don’t do the bank doc until the day of your appointment. Bangkok Bank has you use the app to get your 12 month transactions which could take 2-3 days to your email.

Then medical do 3 days before your appointment.

They are moving to an online extension process sometime this year. They posted the notice last week. Hopefully that we’ll make it like 90 day online reports.

6 months ago

Marty *********

I never had any issues with extending my OA but it is MUCH better now that I have an LTR ( almost 3 years)

6 months ago

Malcolm *********

I started my LTR When my nonO was issued, bank now updated, docs all approved so far, now awaiting final review, hopefully it will be issued before my o renewal is due in Jan 26. Double checked with BOI on progress and they confirmed that final Govt checks are taking place. They respond very quickly to any questions.

6 months ago

Ian **********

My wife sends a small payment to my bank on the day, so when I update the passbook it actually has the correct date.

6 months ago

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Ian **********

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