We are a couple over 55 years old who are planning to stay in Thailand on a Thai Retirement Visa. Would that mean we need to present a total of THB 1.6 million a year?
That is correct. Both of you have to present a bank account of THB 800,000 each. But for couples where one is below 50, what you can do is file for a retirement visa for the one who is above 50, and then file for a dependent visa for the one who is below 50. This way, you only need to present THB 800,000 in a Thai bank account.