This thesis investigated money supply behaviors in the ‘BRICS’ group from 1982 to 2012. It empirically analyzed causality relationships between related monetary indicators by using quarterly data and time series econometric methods. In four countries: Brazil, China, Russia (the period of 2004-2012) and South Africa (1982-1993), this study found money supply endogeneity evidence (bank loans cause the money supply, or there is bidirectional between these two). Other countries, India and the 1982-2003 period of Russia, money supply was found to be exogenous, i.e. money supply cause bank loans. Nonetheless, traditional Monetarian view still holds across the five economies in the short run. The findings reflected discretionary monetary policies targeting monetary aggregates in the short term, despite a neutral role of most central banks in the long run.