The Time Inconsistency of Delegation-Based Time Inconsistency Solutions in Monetary Policy

Journal article: A prominent solution to the time-inconsistency problem inherent to monetary policymaking consists of delegating monetary policy to an independent central bank by an appropriately designed inflation contract or target. This paper shows that delegation is not a solution to this problem: optimal delegation requires commitment and is not time-consistent, while time-consistent delegation is suboptimal. We prove these results formally in a popular dynamic model of monetary policy. Introducing costs of reappointing the central banker can only solve this problem if the government is infinitely averse to changing central bank's contract.

Author(s)

Florin Bilbiie

Journal
  • Journal of Optimization Theory and Applications
Date of publication
  • 2011
Keywords
  • Time-inconsistency
  • Commitment
  • Optimal delegation
  • Inflation contracts and targets
  • Monetary policy
  • Central banking
Pages
  • 657-674
Version
  • 1
Volume
  • 150