Can I use a joint bank account as financial evidence for a Non Immigrant O visa application in Thailand?

When applying for a Non Immigrant O visa based on being a spouse of a Thai national, a joint bank account can often be used as financial evidence from abroad. However, if applying for an extension of stay, usually the account must be in the applicant's name alone, and the balance should be sufficient per immigration regulations. Some offices might allow a joint account but ensure the balance meets double the required amount (e.g., 800,000 Baht for marriage extensions). It's also acceptable to provide funds from an individual bank account from your home country at the initial application stage.