I have a multi entry visa, Non O. Expires September 26, 2026. Whatever I want to do with my next extension, has to be before that date. No two visas at the same time.
Non O-visa is for 90 days and it lets you into the process with Thai Immigration.
To get it (online) you have to show 3 months statements from your bank (anywhere in the world, not in Thai banks) in excess of 800,000 THB. .pdf files, 3 consecutive months, you will have to concatenate them into a single attachment. Took me 5 business days from the Thai Royal Consulate in Osaka to get it approved.
Then, you enter Thai.
With that and accommodation certificate (infamous TM30, landlord has to submit it within 24 hours from your arrival) , you are entering the process.
Opening a bank account. I have done that, got 1 year extension until September 26. 2026. I am over 50 years old, that is the requirement for the non immigrant O-visa.
Honestly, you might be confused with all different answers.
Talk to an agency, they have it all streamlined. Initial consultation, no fee.
If no chance, no fee. If they take your case, count on ~1,000 US$ for their service.
There were posts about situations similar if not identical to yours. Hope some of those valued contrubutors come up here and repeat what they knew and their experiences.
In 2011. I was offered a position (of South East Asia Technical Manager) in my (same company, a multinational IT) in Bangkok, as a local hire, not an expat. We already had our home in Bangkok, used as a holiday home.
The problem was - I could not remain on the same money as in Japan, true, top of then Thai salaries for a non-director in Thai) , 120K THB a month + company car but it was still considerably less than with my same Japan job while the International school would be nearly the same cost. Turned it down, remained in Japan. Thai cost structure (no rent, own home, cheaper daily life) would have eaten that through the school fee. Bangkok Pattana was the school.
For visa, I would have been on a working visa, daughter and Thai wife are Thai nationals.
Have you spoken to the school? Licensed international schools have an interview with the whole family (they want to see you all) before letting your child in and taking any payment from you. It is not like walk in and pay.
Make sure she even knows what the Blue Book is. If she lives in an apartment/house outside of her her place (that might be 100s kms away), she would not have it herself.
Then, you need the condo/house/complex owner to report your TM30.
My last trip to Thai (July 3. 2025) , I saw about 20 people doing their TDAC on the spot. There were 4 ATM like machines for that. Possible, functional but less convenient than if you had it before entering Thai.