March 2023 issue contents
Targeting Financial Stability: Macroprudential or Monetary Policy?

David Aikman,a Julia Giese,b Sujit Kapadia,c and Michael McLeayb


This paper explores monetary-macroprudential policy interactions in a simple, calibrated New Keynesian model incorporating the possibility of a credit boom precipitating a financial crisis and a loss function reflecting financial stability considerations. Deploying the countercyclical capital buffer (CCyB) improves outcomes significantly relative to when interest rates are the only instrument. The instruments are typically substitutes, with monetary policy loosening when the CCyB tightens. We also examine when the instruments are complements and assess how different shocks, the effective lower bound for monetary policy, market-based finance, and a risktaking channel of monetary policy affect our results.

JEL Code: E52, E58, G01, G28

 King's College London
b  ´╗┐Bank of England 
c  ´╗┐European Central Bank