This paper examines credit market policies under pecuniary externalities induced by collateral constraints. Pigouvian taxes/subsidies on debt or savings are derived as Ramsey-optimal policies. Firstly, prudential (ex-ante) debt taxes can restore constrained efficiency. Secondly, when policies...

In the empirical literature, monetary policy shocks are commonly measured as an innovation to a short-term nominal interest rate. In contrast, the majority of monetary business cycle models treats a broad monetary aggregate as the central bank's policy measure. We try overcome this disparity and...

This paper reexamines the role of open market operations for short-run effects of monetary policy. Money demand is induced by a cash constraint, while the central bank supplies money exclusively in exchange for securities, discounted with a short-run nominal interest rate. We consider a legal...

This paper presents a business cycle model with financial intermediation encompassing the conventional New Keynesian model. Households’ financial wealth comprises cash and interest bearing deposits. When deposits provide transaction services, real broad money, which is predetermined, affects...