I am about to start a new contract in Africa and would be grateful for any advice on tax for Swiss residents working in other countries.
Is there any difference in taxes and social charges imposed on swiss residents working abroad (say, on six month contract) vs swiss residents working in Switzerland?
Specifically, what are the variances in rate, cost base etc for deductions such as the AVS, Prevoyance Professionelle (LPP) and obviously tax taken at source?
Until now I have always had these deducted at source. If however an agency pays me a gross daily rate, am I still obliged to pay the above as if I were living in Switzerland?
Already understand "at source" vs declaring taxable income and payments due via tax return; am more interested in differences in rate and loopholes/penalties.
Also, does it make any difference if I am paid via a salary or via a daily rate? Is there an advantage is setting up a small company and charging them independently?
There is no Double Taxation Agreement between the country of work and Switzerland. (not relevant to this issue anyway)
I have a B Permit and really enjoy living in Switzerland. The savings would have to be significant before I would give it up. Or is it also fairly easy to get the B Permit reinstated if I already had one for 2.5 years?
many thanks for comments or contacts regarding any point above!



