You will pay nothing like anybody else. I cant wait until it is 2025 and all the people who spread rumours finally shut up. Thailand has no information about any income and will never have. And how long you are not a resident no other country will give them ever give them any information. And if you really ever lived and work in Thailand then you know they even not have any evidence about Thai people, where 70% never paid any taxes in their life. I know foreigners and Thai doing business inside Thailand and never payed taxes last 10 years. Spreading fear and lies will catch you back next year and then everyone knows about you what person you are.
so have anyone can prove how many days you stay in Thailand? There is no information exchange inside Thai offices. Anybody who thinks taxes are a problem for retired people or long term tourists are a problem don't know anything about Thailand or taxes. Even in Europe there is no chance of tracking anyone if not employed or registered in a company. Discussions about nothing!
sorry but I just found out that the Konsul in Chiang Mai overcharged me for my new passport as I am outside Germany for 33 years and he showed me only 1 price line when I been there.