Central bank screening, moral hazard, and the lender of last resort policy

This paper constructs a theoretical model to examine the LOLR policy when a central bank can imperfectly screen insolvent from solvent banks. We find that: (1) Central bank screening produces a "positive" stigma associated with central bank borrowing by punishing insolvent banks. (2) With central bank screening, the LOLR policy in fact reduces moral hazard rather than inducing it. (3) If the central bank can better identify solvent and insolvent banks when they apply for central bank loans, it will improve social welfare first by forcing the insolvent banks to efficiently liquidate their assets and second by deterring banks from choosing the risky assets to start with.