Today, financial stability has been given the status of a public good. Ensuring this stability requires the design and efficient functioning of a financial safety net. In Poland, the role of such a network is played by the Financial Stability Committee, consisting of the National Bank of Poland (NBP), the Polish Financial Supervision Authority (KNF), the Bank Guarantee Fund (BFG), and the Ministry of Finance (MF). The activity of each network is directed at two areas. The first one is financial crisis prevention and the second is financial crisis management. In each of these areas, the institutions of the network have their objectives and tasks. In this paper, the author attempted to present the role of the National Central Bank in the Financial Stability Committee with particular emphasis on the objectives and tasks of the Polish "monetary ruler" in the area of macro-prudential supervision over the financial system.