What is the correct bank deposit requirement for a retirement visa in Thailand: 800k or 400k baht?

For banked money method for a visa based on being over 50 (retirement) the requirements are 800K baht in a thai bank account in your name only.

For the year extension on that visa the 800K baht has to be in their account for 2 months before they apply, has to stay in the account for 3 months after they get the extension approved and then the balance can't go below 400K baht the rest of the year

It's the marriage to a thai visa that has the 400K baht requirements 🙂