Do I need to keep the 400,000 baht in my own name for a marriage extension visa in Thailand, and can it be in an interest account?

To maintain a marriage extension visa in Thailand, you generally need to have at least 400,000 baht in a bank account. This amount typically must be in your name and easily accessible, meaning that it should not be in a fixed deposit account. It's advisable to keep a little more than 400,000 baht to account for any potential bank charges that might reduce your balance below this threshold. The acceptance of interest-earning accounts can vary by immigration office, so it's best to confirm with your local office for their specific requirements.