What are the rules regarding the 400,000 baht requirement for extending a marriage visa in Thailand?

The rules spell it out pretty clearly, you need to have 400K baht in a thai bank account in your name only for 2 months before you apply for the yearly extension based on marriage to a thai.

The way the rules are written there is no obligation to keep any of that 400K in the account after you've applied for the extension, turned in your documentation, paid your 1900baht and gotten the under consideration stamp.

It does get a bit murky though 😮 While there is no rule about keeping the funds in during the 30 day under consideration period some offices will tell you to keep it in until you get the year extension inked in. But even with that once you have the year extension inked in you can drain the account right down to nothing if you wanted to