Does the 800,000 THB required for a retirement visa extension in Thailand need to originate from abroad?

The general consensus is that the 800,000 THB required for a retirement visa extension does not need to originate from outside Thailand, except in specific circumstances. While some immigration offices may enforce a policy requiring proof that the funds have come from abroad during initial visa applications, this is often not necessary for the one-year extension if the applicant entered Thailand with a Non-Immigrant O visa. Members highlighted the importance of referencing police orders related to extension requirements when dealing with differing opinions at immigration offices.