@Ian *******
for the application to the "change of visa type" inside Thailand, from a tourist visa or visa-exempt entry to a 90-days Non-imm-O retirement visa, either a minimum of 800.000.- THB needs to sit in a Thai bank account and there must be a proof that the money came from abroad, or one can prove by an embassy legalized "affidavit of income" monthly earnings of minimum 65.000.- THB. In order to be able to apply, there needs to be a minimum of 15 days left on the current stay permit. The application fee is 2000.- THB, and the applicant must have a rental contract, and needs to be TM30 registered.