Well its quite straightforward if your applying for non o 90 day outside the country its ok, if its a visa ext 12 months at your local immigration office then its a local bank statement
The initiative its to stop people living here with back to back extensions. Conversely if you come here 6 times a year, from your home country and going back, with booked hotels and return flights there would be no problem. Unfortunately, there will be most probably somewhere in the middle, and here the immigration officer will judge by what you say, and your trip history to determine if your a tourist or not.
well it just happened that I had to call kbank so I asked them about Wise/Swifts they said there should be no problem they are one of the nominated Thai banks to receive Wise tranfers, although, they said customers told them that Wise puts a limit on how much you can send, so I'm not sure what happened, did you call thier call centre to find out? Bangkok bank has a International department that when I sent a wise payment to them they help me sort it out. Wonder if KBank offer the same. The thing with Bangkok bank, is with a non o where you need to hold the money for 2 months BB want to hold it 4 months to let you have bank balance certificate.
Most banks would want some cash deposit like 3kthb or 5kthb, the other can follow. Aviod Bangkok bank if your going to get a visa extension, there too much trouble, KBank is a good bank.
I have done this, you must cancel your work permit and get a leaving document from your company, which you can take to immigration the same day as you make your retirement vida ext. So dont forget your 800kthb needs to be in the bank for 2 or 3 months, not sure 🤔