@Collywobble *********
I don't know if you meet these or not. For the application to the 90-days VISA, you need EITHER the equivalent of 800,000 THB in your home bank account, or in any account anywhere in the world as long as it is in your sole name, OR proof of a pension or income of a minimum of 65,000 THB. . . . However, for the application to the 1-year EXTENSION of stay in Thailand, in the first year (!!) you need a minimum of 800,000 THB in your Thai bank account, you cannot use your income as a proof because your embassy in Bangkok does not issued income affidavits any more. You only have the option to switch to the "12-months transfers from abroad of 65,000 THB bank letter proof" after the first year