The Tragedy of the Carrots: Economics & Politics in the Choice of Price Instruments
Brian D. Galle
Georgetown University Law Center
May 29, 2012
64 Stanford Law Review 797 (2012)
Boston College Law School Legal Studies Research Paper No. 240
Externalities are one of the most fundamental market-failure justifications for government action, and pigouvian taxes and subsidies are standard tools for correcting them. Even so, neither the legal nor economic literatures offer any comprehensive account of when policy makers should prefer one to the other. This Article takes up that task. Prior efforts to distinguish between “carrots” and “sticks” have generally been limited to the context of pollution regulation, and I show here that even those are incomplete. I also extend the analysis to the case of positive externalities, where there is no prior literature to speak of. Overall I find that sticks are usually superior to carrots, but that there are some interesting exceptions.
Nonetheless, carrots are rampant in modern lawmaking, especially carrots in the form of tax expenditures. I identify features of modern politics and law that contribute to the current inefficient over-production of carrots. Among others, I find that federalism contributes to political preferences for carrots. That implies an until-now unrecognized reason to centralize certain forms of government regulation.
Finally, I take issue with the claims of the environmental literature that carrots, even if the inferior policy choice, should be used when politics would be likely otherwise to frustrate any regulation. Using carrots in critical and closely-contested situations only contributes to externality producers’ incentives to raise the political stakes, by either cranking out more negative externalities or withholding benefits.
Number of Pages in PDF File: 54
Keywords: pigouvian tax, subsidy, carrots, sticks, incentives, externalities, tax expenditures, charitable contribution deduction
JEL Classification: H23, H77, K23, K42
Date posted: August 29, 2011 ; Last revised: May 30, 2012
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