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The optimal degree of discretion in monetary policy

  • Susan Athey
  • Andrew Atkeson
  • Patrick J. Kehoe

How much discretion is it optimal to give the monetary authority in setting its policy? We analyze this mechanism design question in an economy with an agreed-upon social welfare function that depends on the randomly fluctuating state of the economy. The monetary authority has private information about that state. In the model, well-designed rules trade off society's desire to give the monetary authority flexibility to react to its private information against society's need to guard against the standard time inconsistency problem arising from the temptation to stimulate the economy with unexpected inflation. We find that the optimal degree of monetary policy discretion is decreasing in the severity of the time inconsistency problem. As this problem becomes sufficiently severe, the optimal degree of discretion is none at all. We also find that, despite the apparent complexity of this dynamic mechanism design problem, society can implement the optimal policy simply by legislating an inflation cap that specifies the highest allowable inflation rate. (Replaced by Staff Report No: 326)

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Paper provided by Federal Reserve Bank of Minneapolis in its series Working Papers with number 626.

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Date of creation: 2002
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Handle: RePEc:fip:fedmwp:626
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