you are wrong if you stay more than 6 months in thailand ( in a year ) you are tax resident in thailand and need to report tax ( maybe it will be 0 baht depending of your situation ).
yes, I am busy to do the full disconnection, but normally If you spend >6 month in thailand it should be okay ( if you don't keep family and business in the home country ), I wait to get more information from lawyer here .. in my country I don't get a lot of information except my bank will not take tax when I can prove I live other country ...
this is valid for every country :) honestly I feel so happy to stop pay tax in my country that I will pay (lower) in thailand with happiness .. but for what I understand if I live on saving I don't need to pay tax in thailand, I give it back to thailand ( thai people ) in other way ;)
Participant(e) anonyme I update when I have info, getting tin is mandatory when you spend more than 6 month a year in thailand, so I will be surprised if it is complicated to get ( but I already stay this year more than 6 month, maybe you need to make this before register for tin, I don't know )