Is it necessary to report and show that I still have 800k in my bank account after extending my retirement visa in Thailand?

You asked about this requirement when you got your extension in February...

Same answers as before.

3/permalink/5/

Yep...absolutely necessary !

Totally necessary. You used the 800K baht banked money method to get your yearly extension and the new requirements are that you kept the 800K baht in your account for 3 months after you got the extension.

They gave you a paper that tells you the date you show back up with your updated bank book and a copy of it to show them you followed the rules.

Not every immigration office does it BUT if they gave you the paper, they are one of the offices that DO require it :/