[LivinLOS]

If you still pay taxes in your home country depends heavily on the home country (and its DTA agreement with the country you do work in) as well as your residential status..

For a Brit and most Euro's its pretty easy to stay out for 183 days per year and build non resident or even better (but you need a laywer who knows a bit more) to be 'resident but not ordinarily resident for tax purposes' which allows you to still have homes and assets incountry but not pay tax in UK.

For Yanks its much harder to not pay home based taxes unless your really going to give them the middle finger salute and make the expat jump.

Working under the radar in Thailand for clients outside of Thailand is really no problems.. Even some immigration offices have said it was ok as long as its not with Thai clients.. Others say painting your own wall or walking your dog breaks Thai law (does a job a Thai could do) thier laws are very poorly / ambigiously written as it then allows team money for all. Personally I would consider the Thai side very low worry and only worry about home country issues IF you are working online and working with outside Thailand clients and payments.