What are the requirements for having 800,000 baht in a Thai bank for a retirement visa extension?

To apply for a retirement visa extension in Thailand, you need to have 800,000 baht in a Thai bank account, which can be any normal bank but must be in your name only (not a fixed deposit). It's suggested to keep it in an account for at least 2 months prior to your application and you don't need to show the source of the funds if you’re just transitioning from another extension based on employment. Popular banks mentioned include Bangkok Bank and Kasikorn, both of which can provide the necessary certification letters on the day of application. For further extensions, you can dip back to 400,000 baht after your first application, but must top it back up to 800,000 baht two months before the next application.