HNB was established by the Constitution of Croatia which was passed by the Croatian Parliament on 21 December 1990. Its main responsibilities are maintaining the stability of the national currency, the kuna, and ensuring general financial liquidity within the country. HNB also issues banknotes and holds the national monetary reserves. In performing its duties HNB acts as an independent institution responsible to the Parliament. The bank has a share capital of 2,500,000,000 Croatian kunas (c. US$ 450 million). HNB acts in accordance with "Law on Croatian National Bank".