What do I need to open a bank account in Udon Thani as a foreigner married to a Thai citizen?

To open a bank account in Udon Thani as a foreigner, generally, you will need a marriage certificate, proof of residence (property ownership documentation), a visa with a stay of more than one month, and possibly a Thai mobile number. However, requirements can vary by bank and branch. Some users reported needing different documentation and suggested trying multiple banks or branches due to inconsistent requirements. For long-term stay in Thailand, there are options like the retirement visa or extensions based on marriage, each requiring specific financial conditions (such as holding a certain amount in the bank). Many users also recommended patience and trial-and-error when approaching different banks.