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Optimal Control of Externalitiesin the Presence of Income Taxation

LOUIS KAPLOW
Harvard Law School; National Bureau of Economic Research (NBER)

June 2006

Harvard Law and Economics Discussion Paper No. 547
 
 
Abstract:     
A substantial literature examines second-best environmental policy, focusing particularlyon how the Pigouvian directive that marginal taxes should equal marginal external harms needsto be modified in light of the preexisting distortion due to labor income taxation. Additionalliterature is motivated by the possibility that distributive concerns should amend theinternalization prescription. It is demonstrated, however, that simple first-best rules - unmodified for labor supply distortion or distribution – are correct in a natural, basicformulation of the problem. Specifically, setting all commodity taxes equal to marginal harms(and subsidies equal to marginal benefits) can generate a Pareto improvement. Likewise, amarginal reform in the direction of the first-best can yield a Pareto improvement. For otherreforms, a simple efficiency test characterizing when a Pareto improvement is possible is offered. Qualifications and explanations for the substantial departure from results in previous work arealso elaborated.

 
JEL Classifications: D61, D62, D63, H21, H23, K32
 
Working Paper Series
 

Suggested Citation
Kaplow, Louis, "Optimal Control of Externalitiesin the Presence of Income Taxation" (June 2006). Harvard Law and Economics Discussion Paper No. 547 Available at SSRN: http://ssrn.com/abstract=921430

 

Contact Information for LOUIS KAPLOW (Contact Author)


Email address for LOUIS KAPLOW
Harvard Law School
1575 Massachusetts Avenue
Cambridge , MA 02138
United States
617-495-4101 (Phone)
617-496-4880 (Fax)


(No e-mail address available for LOUIS KAPLOW
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge , MA 02138
United States


 
 


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