Two types of bills currently exist on the Serbian financial market: T-bills issued by the Ministry of Finance of the Republic of Serbia, and NBS bills, issued by the National Bank of Serbia. The main idea behind these financial instruments is to facil- itate the development of the financial market in Serbia. This is in accordance with the monetary policy of the National Bank of Serbia, but also an important aspect of the economic restructuring program. Nevertheless, both types of bills are currently trad- ed only on the primary market. Both securities are used as instruments for regulat- ing money supply. In order to accumulate additional funds, the.