Is it true that I can use my wife's or a joint account for the financial requirement of a family visa in Thailand?

@Benjamin ******

if you are referring to a type O extension based on Thai wife, as a family visa (as there is no family visa), then a joint account is not accepted. That bt400,000 must be in your account in your name only for at least two months before you apply for your extension. For a retirement extension a joint account is only accepted sometimes at a few immigration offices if both are foreigners, and both applying for the retirement extensions. Joint accounts with a Thai person are not accepted. This is that way so you can't blame a Thai person for withdrawing money, and in doing so puts you below required funds in the account, even if you are married.