Your plan gives you 90 days to open a Thai bank account in your name and deposit the required
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0 baht. Next, go to you immigration office and ask them for their requirements to apply for 90 day non o and subsequently the 12 month extension. Offices vary in their requirements so you can get misleading information here.
Presumably your last extension was obtained using banked
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0 baht. Should that be the case then
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0baht should have remained in your account for three months after application and should not have dropped below
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0 baht for the rest of the year. That is to satisfy the terms of last years extension before changing to the monthly income method which must show as international transfers on your statements or FTT.
You re enter Thailand using a re entry permit on 13th March. Your current non o Visa extension based in retirement expires on 15th March. That gives you not much longer than 12 hours to apply for your new 12 month extension not counting how long it takes you to get to immigration office that issues your stamp. In my opinion that us cutting it too fine and UF you enter the country and fail to get your new stamp you will be on overstay. Personally I would not risk that and enter Thailand after your current stamp expires ie after 15th March and get stamped in 30 days Visa exempt if you qualify. You can then extend that by 30 days which gives you 60 days to get all your ducks lined up and apply for the 90 day non o based on retirement all over again. Once you have got this you can apply for a new 12 month extension provided you meet the financial and other requirements. As others have said the 90 day thing is the tm47 and has nothing to do with your Visa extension. Your 90 days will start on the day you re enter Thailand after which you will have to make the report but it can be done two weeks early or 1 week late in person. Different if you do it on line.
I have 3 thai bank accounts and only my bangkok bank shows as FTT after asking Wise to tag my account. I use long term stay in Thailand as reason for transfer and it has worked for me now for 6 consecutive months. I did read somewhere that immigration will not accept two transfers or more per month totalling