Rising Marginal Costs, Rising Prices?

Fuente: arXiv
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Main Authors: Kariel, Joel, Savagar, Anthony
Format: Preprint
Published: 2025
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author Kariel, Joel
Savagar, Anthony
author_facet Kariel, Joel
Savagar, Anthony
contents We present empirical evidence on the relationship between demand shocks and price changes, conditional on returns to scale. We find that in industries with decreasing returns to scale, demand increases (which raise costs) correspond to price increases. Whereas, in industries with increasing returns to scale, demand increases (which lower costs) correspond to stable prices. We interpret the results with a theory of imperfect competition and returns to scale. For prices to remain stable following a cost decrease, markups necessarily rise. For prices to increase as cost increases, it is not necessary for markups to change but does not preclude their role. From a macroeconomic perspective, our results imply that inflation dynamics and the effectiveness of monetary policy depend on market structures.
format Preprint
id arxiv_https___arxiv_org_abs_2502_05898
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Rising Marginal Costs, Rising Prices?
Kariel, Joel
Savagar, Anthony
General Economics
Economics
We present empirical evidence on the relationship between demand shocks and price changes, conditional on returns to scale. We find that in industries with decreasing returns to scale, demand increases (which raise costs) correspond to price increases. Whereas, in industries with increasing returns to scale, demand increases (which lower costs) correspond to stable prices. We interpret the results with a theory of imperfect competition and returns to scale. For prices to remain stable following a cost decrease, markups necessarily rise. For prices to increase as cost increases, it is not necessary for markups to change but does not preclude their role. From a macroeconomic perspective, our results imply that inflation dynamics and the effectiveness of monetary policy depend on market structures.
title Rising Marginal Costs, Rising Prices?
topic General Economics
Economics
url https://arxiv.org/abs/2502.05898