if you're a resident, why should you get to keep your money gross & not net ... yes, you should pay tax to the country you live in for the infrastructure
so tourists can't acquire any further monies once in Thailand without it being deducted tax ? i think this is just another pointless post ... all hedge fund managers will withdraw investments into Thailand, never gonna happen, only taxation on Thailand work related income ... how many of these silly spontaneous ideas go out the window the following week ? 555