The data of macroeconomics is very important for all actors of economic stage. Many times this data generates dissatisfaction, confusion, even revolt. We`ll try to identificate the limits of macroeconomic indicators, insisting on its manipulating character. For example the limits of the income per capita are quite numerous and may be organized by three main categories: the report variables related uncertainties, the effects of the exchange variations and the difficulties of a price system international comparison.