Thanks for your research, but as an Austrian (and I think there are not many of us in this group) I will have to check the double taxation conditions with my financial authorities and maybe get some sort of "taxpayer certificate".
Not my best choice of words, sorry. I just feel that the tendency towards xenophobia is on the rise again - powered by a disproportionately big number of articles and posts in all Thai media finding foreigners guilty for being rude, demeaning to Thais, working without permit, etc. Even in places I have been frequenting regularly in the last years I now often get 'mai mee, mai looh, mai dai' and the passive aggressive treatment. But then again, maybe I am just getting paranoid.