DP6325 Optimising Indexation Arrangements under Calvo Contracts and their Implications for Monetary Policy

Author(s): Vo Phuong Mai Le, Patrick Minford
Publication Date: June 2007
Keyword(s): Calvo contracts, inflation target, New Keynesian model, optimal indexation, price-level target, rational expectation
JEL(s): E50, E52
Programme Areas: International Macroeconomics
Link to this Page: cepr.org/active/publications/discussion_papers/dp.php?dpno=6325

This paper investigates optimal indexation in the New Keynesian model, when the indexation choice includes the possibility of partial indexation and of varying weights on rational and lagged indexation. It finds that the Calvo contract adjusted for rationally expected indexation under both inflation and price level targeting regimes delivers the highest expected welfare under both restricted and full current information. Rational indexation eliminates the effectiveness of monetary policy on welfare when there is only price-level targeting under the current micro information. If including both wage setting and full current information, monetary policy is effective; and a price-level targeting rule delivers the highest benefits because it minimises the size of shocks to prices and thus dispersion. However, even less than full rational indexation ensures that there is very little nominal rigidity in the adapted world of Calvo contracts.