What are the bank statement requirements for a second extension of stay based on marriage in Thailand?

The user is inquiring about the documentation required for extending their marriage-based visa in Thailand for the second year. Comments indicate that generally, for an extension based on marriage, one needs to provide bank statements showing either a balance of 400,000 THB for two months prior or evidence of a monthly income of 40,000 THB. A user mentioned that Ayutthaya immigration confirmed needing three months prior to the application. Additionally, another comment shared a successful experience with a 12-month statement for a prior renewal.