This Paper evaluates the welfare implications of policy rules when international financial markets are incomplete. Using a two-country dynamic general equilibrium model with incomplete markets, price stickiness and monopolistic competition, one finds that an allocation in which the producer...

The actions by the European Central Bank (ECB) during the global and European crises have triggered a highly controversial debate, in particular in Germany, about the costs and benefits of the chosen policy path. The paper reviews, compares and evaluates the different arguments made in favour...

We study optimal monetary policy in a flexible state-dependent pricing framework, in which monopolistic competition and stochastic menu costs are the only distortions. We show analytically that it is optimal to commit to zero inflation in the long run. Moreover, our numerical simulations...

The recent global financial crisis has exposed the limitations of a conventional inflation targeting framework in insulating an economy from all shocks, and demonstrated that its rigid application may aggravate the effect of shocks on output and inflation. Possible refinements to the inflation...

Under a flexible inflation targeting regime, should policymakers avoid any reaction to movements in the foreign exchange market? Using data for six advanced open economies explicitly targeting inflation, the paper examines empirically whether real exchange rate disequilibria systematically...

This paper proposes a markedly different transmission mechanism from monetary policy to the macroeconomy, focusing on how policy changes nominal inertia in the Phillips curve. Using recent theoretical developments, we examine the properties of a small, estimated U.S. monetary model...

This paper proposes a new method of estimating the Taylor rule with a time-varying implicit inflation target and a time-varying natural rate of interest. The inflation target and the natural rate are modeled as random walks and are estimated using maximum likelihood and the Kalman filter. I...

We analyse optimal monetary and fiscal policy in a New-Keynesian model with public debt and inflation persistence. Leith and Wren-Lewis (2007) have shown that optimal discretionary policy is subject to a 'debt stabilization bias' which requires debt to be returned to its pre-shock level. This...