The Simple Post-Keynesian Monetary Policy Model: An Open Economy Approach

Leonardo Vera

Review of Political Economy, 2014, vol. 26, issue 4, 526-548

Abstract: Monetary policy with an inflation targeting rule is analyzed through a simple small-scale Post-Keynesian model that incorporates open economy issues. In contrast with previous Post-Keynesian attempts, the model embodies policy authorities that are committed not only to hitting inflation and/or output targets, but also to the achievement of the external balance. To take account of the external balance objective, we model the real exchange rate as an endogenous and moving target, with the nominal exchange rate being the instrument of that target. The model shows that in response to an adverse external shock the central bank has to consider first the required real exchange rate adjustment that will preserve the external balance, and secondly the level at which the interest rate must be set in order to maintain inflation stabilization. Keeping inflation to target requires higher interest rates and strong reliance on the unemployment channel which, under certain circumstances, also has adverse side effects on income distribution. We show that to deal with an exogenous external shock a policy mix of real exchange rate targeting and income distribution targeting outperforms inflation targeting.

Date: 2014
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DOI: 10.1080/09538259.2014.969547

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