In this paper we show the statistical methods that can be used to pass from the company to the whole domestic sector analysed, in order to estimate the impact on value of production, added value and fixed capital formation. An institutional unit is resident in a country when it has its center of predominant economic interest in the economic territory of that country; the units which constitute the economy of a country and whose flows and stocks are recorded in the ESA 2010 are those which are resident: we show statistical, fiscal and administrative sources that can be used to outline domestic economic performance of the main enterprises carrying out activity abroad and a methodology to separate national production from foreign activity, which ...