This study examines which financial stability responsibilities have been delegated to central banks (CBs), how these responsibilities are executed, and whether democratic accountability arrangements are in place. The results of our survey among all CBs in the OECD area suggest that there is no unambiguous definition of financial stability or systemic risk, and that, generally, the responsibility for financial stability is not explicitly formulated in laws. Moreover, there is considerable heterogeneity in the way CBs pursue the financial stability objective. Our results also suggest that the democratic accountability of the financial stability function of central banks is often poorly arranged.