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Inflation persistence and optimal positive long-run inflation


  • Pontiggia, Dario


In this paper we prove that (I) inefficient natural level of output (Friedman (1968)), (II) central bank's desire to stabilize output around a level that is higher than the inefficient natural level of output, (III) long-run Phillips curve trade-off, and (IV) inflation persistence result in optimal positive long-run inflation. The combination of (I), (II), and (III) makes positive inflation forever in principles desirable as it would result in positive output gap forever. Optimal positive steady-state inflation obtains if and only if there is a long-run incentive for positive inflation. Inflation persistence, defined as costly, in terms of output, disinflation, generates a long-run incentive for positive inflation. Optimal positive steady-state inflation obtains in the basic neo-Wicksellian model (Woodford (2003)) with inflation persistence due to backward-looking rule-of-thumb behaviour by price setters. Optimal positive long-run inflation also obtains in what we refer to as the nonmicrofounded model. Prescinding from hyperinflation, the formula for steady-state inflation is capable of providing a positive theory of inflation.

Suggested Citation

  • Pontiggia, Dario, 2007. "Inflation persistence and optimal positive long-run inflation," MPRA Paper 3274, University Library of Munich, Germany.
  • Handle: RePEc:pra:mprapa:3274

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    References listed on IDEAS

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    Cited by:

    1. Simon Wren-Lewis & Fabian Eser, 2009. "When is Monetary Policy All we Need?," Economics Series Working Papers 430, University of Oxford, Department of Economics.

    More about this item


    Optimal monetary policy; inflation persistence;

    JEL classification:

    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation

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