Template-Type: ReDIF-Paper 1.0 Author-Name: Egemen Eren Author-X-Name-First: Egemen Author-X-Name-Last: Eren Author-Name: Timothy Jackson Author-X-Name-First: Timothy Author-X-Name-Last: Jackson Author-Name: Giovanni Lombardo Author-X-Name-First: Giovanni Author-X-Name-Last: Lombardo Title: The macroprudential role of central bank balance sheets Abstract: Is there a role for central bank balance sheet policies away from the effective lower bound on interest rates? We extend the canonical DSGE model with financial frictions to include a fully specified central bank balance sheet. We find that the balance sheet size and composition can play a macroprudential role in improving the efficacy of monetary policy. The optimal balance-sheet policy aims at affecting duration risk held by banks in order to increase their resilience to shocks. Optimal short-run balance sheet policies bring no additional advantage to using the policy rate alone provided the optimal long-run balance sheet is already in place. Our results also highlight a key role for government debt maturity and bank regulation in determining optimal central bank balance sheets. Creation-Date: 2024-03 File-URL: https://www.bis.org/publ/work1173.pdf File-Format: Application/pdf File-Function: Full PDF document File-URL: https://www.bis.org/publ/work1173.htm File-Format: text/html Number: 1173 Keywords: optimal monetary policy, central bank balance sheet, government debt, reserves, financial frictions, macroprudential Classification-JEL: E42, E44, E51, E52, G2 Handle: RePEc:bis:biswps:1173