An offshore company is a company that is incorporated in a foreign nation. Typically, an offshore company does not conduct most of its business in a country where it is officially based.An example of an offshore company would be a corporation that is formally headquartered in Mexico, but carries out most of the operations in the United States.ost prominently, offshore company structures are established in order to benefit from loose government regulation and low taxation. For those very reasons, a domestic company may often move offshore to become an offshore company. An offshore company is also referred to as a non-resident company.