The Inflation Accelerator

Andrés Blanco, Corina Boar, Callum Jones and Virgiliu Midrigan

No 32531, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We develop a tractable sticky price model in which the fraction of price changes evolves endogenously over time and, consistent with the evidence, increases with inflation. Because we assume that firms sell multiple products and choose how many, but not which, prices to adjust in any given period, our model admits exact aggregation and reduces to a one-equation extension of the Calvo model. This additional equation determines the fraction of price changes. The model features a powerful inflation accelerator – a feedback loop between inflation and the fraction of price changes – which significantly increases the slope of the Phillips curve during periods of high inflation. Applied to the U.S. time series, our model predicts that the slope of the Phillips curve ranges from 0.02 in the 1990s to 0.12 in the 1970s and 1980s.

JEL-codes: E3 E40 (search for similar items in EconPapers)
Date: 2024-05
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Working Paper: The Inflation Accelerator (2024)
Working Paper: The Inflation Accelerator (2024)
Working Paper: The Inflation Accelerator (2024)
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