The growth of claims of the Banking Sector from the State and the decline in the International Investment Position of the Republic of Serbia are conditioned by the illiquidity of the public sector, which further imposes a concrete conclusion that this phenomenon is in a negative correlation with the degree of budgetary balance. Тhe illiquidity of the public sector, which is primarily reflected in the inability to pay off public debt, which records constant growth, but also in the deficit of budget funds, adversely affects the international investment position, as well as on claims of the Banking Sector from the Republic of Serbia.With the help of these data, the high negative coefficient of interdependence of these two parameters is observed, which is the subject of this research.