Ad valorem versus unit taxes: Monopolistic competition, heterogeneous firms, and intra-industry reallocations
AbstractReal-world industries are composed from heterogeneous firms and substantial intra-industry reallocations take place, i.e. high productivity firms squeeze out low productivity firms. Previous tax-tool comparisons have not included these central forces of industry structure. This paper examines a general equilibrium monopolistic competition model with heterogeneous firms and intra-industry reallocations. We show that the welfare superiority of ad valorem over unit taxes under imperfect competition is not only preserved but amplified. The additional difference between the tools arises because unit taxes distort relative prices, which in turn reduces average industry productivity through reallocations (the survival and increased market share of lower productivity firms). Importantly, numerical solutions of the model reveal that the relative welfare loss from using the unit tax increases dramatically in the degree of firm heterogeneity.
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Bibliographic InfoPaper provided by School of Economics and Management, University of Aarhus in its series Economics Working Papers with number 2010-10.
Date of creation: 23 Jun 2010
Date of revision:
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Web page: http://www.econ.au.dk/afn/
unit tax; ad valorem tax; welfare; intra-industry reallocation; monopolistic competition; heterogenous firms;
Other versions of this item:
- Philipp Schröder & Allan Sørensen, 2010. "Ad valorem versus unit taxes: monopolistic competition, heterogeneous firms, and intra-industry reallocations," Journal of Economics, Springer, vol. 101(3), pages 247-265, November.
- D43 - Microeconomics - - Market Structure and Pricing - - - Oligopoly and Other Forms of Market Imperfection
- D61 - Microeconomics - - Welfare Economics - - - Allocative Efficiency; Cost-Benefit Analysis
- H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation
- H22 - Public Economics - - Taxation, Subsidies, and Revenue - - - Incidence
- H23 - Public Economics - - Taxation, Subsidies, and Revenue - - - Externalities; Redistributive Effects; Environmental Taxes and Subsidies
- L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
- L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
This paper has been announced in the following NEP Reports:
- NEP-ALL-2010-07-03 (All new papers)
- NEP-MIC-2010-07-03 (Microeconomics)
- NEP-PUB-2010-07-03 (Public Finance)
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