When Can Benefit–Cost Analyses Ignore Secondary Markets?

Matthew J. Kotchen and Arik Levinson

Journal of Benefit-Cost Analysis, 2023, vol. 14, issue 1, 114-140

Abstract: We make four main contributions in this paper related to the theory and practice of benefit–cost analysis (BCA). First, we show that most BCAs of policy interventions do not consider the welfare consequences in secondary markets, where goods or services can be complements or substitutes to those in the directly regulated markets. Second, we provide a general theoretical analysis for examining the sign of welfare effects in secondary markets, showing how the results depend on the welfare measure of interest and on whether the goods are complements or substitutes. We conclude that the welfare effects in secondary markets will typically be negative in cases most relevant for policy analysis. Third, we develop a straightforward tool that BCA analysts can use to evaluate the potential magnitude of secondary-market effects in particular applications. The tool itself highlights how secondary markets are likely to be relatively small in most circumstances. Finally, we illustrate use of the tool in different applications that provide further evidence that secondary-market effects are likely to be small.

Date: 2023
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Working Paper: When Can Benefit Cost Analyses Ignore Secondary Markets? (2022)
Working Paper: When Can Benefit Cost Analyses Ignore Secondary Markets? (2022)
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Persistent link: https://EconPapers.repec.org/RePEc:cup:jbcoan:v:14:y:2023:i:1:p:114-140_7

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