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Optimal Monetary Policy with Non-homothetic Preferences

Author

Listed:
  • Cesar Blanco

    (Newcastle University)

  • Sebastian Diz

    (Central Bank of Paraguay)

Abstract

We study optimal monetary policy in a multisector model where preferences are non-homothetic. We find that a lower-than-one income elasticity in food demand, due to non-homotheticity, reduces the weight on food inflation in the optimal index that the monetary authority should target. The reasons are threefold. First, food price stabilization requires large deviations of output from the efficient level. Second, food demand becomes insensitive to monetary policy. Third, the low sectoral marginal propensity to consume implies that food price volatility has a reduced impact on aggregate demand. These results provide a rationale for targeting an index that excludes food inflation.

Suggested Citation

  • Cesar Blanco & Sebastian Diz, 2025. "Optimal Monetary Policy with Non-homothetic Preferences," International Journal of Central Banking, International Journal of Central Banking, vol. 21(2), pages 309-350, April.
    • Handle: RePEc:ijc:ijcjou:y:2025:q:2:a:7
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    References listed on IDEAS

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    1. Mark Aguiar & Gita Gopinath, 2007. "Emerging Market Business Cycles: The Cycle Is the Trend," Journal of Political Economy, University of Chicago Press, vol. 115(1), pages 69-102.
    2. Alessandro Galesi & Omar Rachedi, 2016. "Structural transformation, services deepening, and the transmission of monetary policy," Working Papers 1615, Banco de España.
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