Real balance effects and monetary policy

This article presents a dynamic stochastic new Keynesian model with real balance effects. I find a number of results that would not appear in the traditional framework. It is shown that the real balance effect makes the so-called Taylor principle not necessary for determinacy of rational expectations equilibrium and that “passive” monetary rules may be feasible. In addition, within a class of policy rules constrained to be a linear function of state variables, “active” interest rate rules are more likely to be optimal under commitment rather than under discretion.