The older retired expats I know in Thailand just want to be left alone to live the last years of their life there hassle free. The last thing they want to do is have to deal with intrusive Thai bureaucracy and having to compile, prepare and file taxes every year. Judging by the past actions of the Thai government with their visa rule changes, reporting requirements, past non enforced rules being enforced on a whim and now taxes, what would come next? Those who don't have a spouse and/or family here need to vote with their feet and find greener pastures.