What is the required bank balance for a marriage visa in Thailand: 400k or 800k?

The required amount to show in a Thai bank account for a marriage visa varies based on the account type. If the account is solely in your name, you need to show 400,000 THB on the day of application. If it's a joint account, the amount needed is 800,000 THB, as the immigration authorities consider it a 50/50 split. Additionally, some regions, like Jomtien, require the funds to be in the account for at least two months before applying for the extension.