Choice of Monetary Policy Instrument under Targeting Regimes in a Simple Stochastic Macro Model 

This paper analyzes the relative performance of inflation and price-level targeting regimes in an AS-IS-LM framework under alternative policy instruments used by the central bank. Being general in its nature, the results are further used to derive equilibrium values of the important macroeconomic variables under the two targeting regimes for two limiting cases; when LM schedule becomes vertical (Quantity Theory of Money) and when it becomes horizontal (Endogenous Money Hypothesis). Contrary to Svensson’s findings, our results imply a ‘free lunch’ in case of inflation targeting rather than pricelevel targeting. Calibration results for Pakistan also support these theoretical findings and point towards inadequacy of using interest rate, rather than money supply, as a policy instrument both under the inflation and price level targeting regimes.