[bckygldstn]

When I did this as a contractor I gave my employer a W8-BEN form, which affirms you are a non-resident from a country with a tax treaty with the US. Then I was paid my full rate by my US employer (no tax withheld), and I paid tax at the end of the year in my own country at the self-employed rate.

I believe this will differ greatly based on how your company prefers likes to handle things, how your government likes to tax things, and whether you set yourself up as self-employed, contractor, employee, corp, sole tradership etc. I'd highly recommend seeing a local accountant or similar.