Be certain to obtain a re-entry permit before you leave Thailand if you didn't include it in your original OA visa. If you depart without it you're Visa is no longer valid.

@John *********

Yeah, that ^

Apply for a retirement visas through your Thai Embassy before you leave. Easy.

Yes, and TDAC

Yes, or prove 65,000 baht per month income per individual.

It's not that difficult. Save yourself the $$$ and do it yourself.

Kasikorn, definitely

@Nigel *************

Well, normally I would agree with you, but that as of this month is no longer the case in my latest experience. My funds left my account January 8th, they have yet to 'show up' in the possession of Wise or my Kaisikorn account. Today is the 12th of January. 4 days and counting. For 10 months prior the funds arrived in my KBank account within minutes. Something has changed...

Print it and always keep it in your passport. You'll be surprised how often you'll need it.

@Peter *****

Kaisikorn required me to have a Thai phone number.