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Différence des ajustements de prix à des hausses ou baisses des taux de la TVA : un examen empirique à partir des réformes françaises de 1995 et 2000

Author

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  • Clément Carbonnier

    (THEMA - Théorie économique, modélisation et applications - CNRS - Centre National de la Recherche Scientifique - CY - CY Cergy Paris Université)

Abstract

L'ajustement des prix aux variations de taxes indirectes dépend des caractéristiques de la concurrence sur les marchés, mais également du sens de variation de la taxe. Un premier effet d'asymétrie est lié à l'existence de coûts d'ajustement des productions ou de contraintes de crédit qui induisent une asymétrie de l'élasticité de l'offre, d'où résulte une asymétrie de l'ajustement des prix. Parce qu'il est plus coûteux d'augmenter que de réduire sa production, la quantité échangée augmente moins après une baisse de taxes indirectes qu'elle ne diminue après leur hausse, et ainsi les prix s'ajustent plus fortement à la hausse qu'à la baisse. Les ajustements de prix sur des marchés compétitifs sont donc a priori plus forts à la hausse qu'à la baisse. Le second effet est lié à la demande des consommateurs qui réagissent plus fortement à de plus fortes variations de prix pour des raisons de visibilité de ces dernières, ou de coût de changement de leurs habitudes de consommation. Dès lors les entreprises oligopolistiques, qui ont un pouvoir sur les prix, atténuent les hausses de prix pour minimiser les chutes de consommation et accentuent les baisses de prix pour créer un effet promotionnel. Sur les marchés en concurrence imparfaite, cet effet tend à compenser le premier. Que les entreprises en concurrence augmentent plus leurs prix que les entreprises en oligopole n'est pas paradoxal si l'on rappelle qu'en concurrence parfaite les prix sont déjà bas, ce qui interdit de fortes baisses. À l'inverse, les entreprises oligopolistiques profitent de leurs marges de profit pour financer des effets promotionnels, en minimisant les hausses et amplifiant les baisses de prix. Cependant ces deux effets théoriques, testés et validés sur données françaises à partir de l'analyse de deux réformes du taux plein de la TVA de 1995 et 2000, sont des effets à court terme : les coûts d'ajustement sont temporaires et les effets promotionnels disparaissent avec le temps.

Suggested Citation

  • Clément Carbonnier, 2008. "Différence des ajustements de prix à des hausses ou baisses des taux de la TVA : un examen empirique à partir des réformes françaises de 1995 et 2000," Post-Print hal-05657646, HAL.
  • Handle: RePEc:hal:journl:hal-05657646
    Note: View the original document on HAL open archive server: https://insee.hal.science/hal-05657646v1
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    1. is not listed on IDEAS
    2. Pascal Belan & Clément Carbonnier & Martine Carré, 2017. "Tax devaluation with endogenous margins," Working Papers hal-01515806, HAL.
    3. Nauleau, Marie-Laure & Giraudet, Louis-Gaëtan & Quirion, Philippe, "undated". "Energy Efficiency Policy with Price-quality Discrimination," Climate Change and Sustainable Development 202240, Fondazione Eni Enrico Mattei (FEEM).
    4. Carbonnier Clément, 2013. "Pass-through of Per Unit and ad Valorem Consumption Taxes: Evidence from Alcoholic Beverages in France," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 13(2), pages 837-863, September.
    5. Nauleau, Marie-Laure & Giraudet, Louis-Gaëtan & Quirion, Philippe, 2015. "Energy efficiency subsidies with price-quality discrimination," Energy Economics, Elsevier, vol. 52(S1), pages 53-62.
    6. Gómez-Antonio, Miguel & del Moral Arce, Ignacio & Hortas-Rico, Miriam, 2022. "Are VAT reforms an effective tool for promoting culture? A quasi-experiment in Spain," Journal of Policy Modeling, Elsevier, vol. 44(5), pages 1016-1040.
    7. Emmanuel Chavez & Cristobal Dominguez, 2021. "Who pays for a Value Added Tax Hike at an International Border? Evidence from Mexico," Working Papers halshs-03364026, HAL.
    8. repec:hal:journl:hal-04020073 is not listed on IDEAS
    9. Youssef Benzarti & Dorian Carloni & Jarkko Harju & Tuomas Kosonen, 2020. "What Goes Up May Not Come Down: Asymmetric Incidence of Value-Added Taxes," Journal of Political Economy, University of Chicago Press, vol. 128(12), pages 4438-4474.
    10. E. Gautier. & A. Lalliard., 2013. "How do VAT changes affect inflation in France?," Quarterly selection of articles - Bulletin de la Banque de France, Banque de France, issue 32, pages 5-27, Winter.
    11. Youssef Benzarti & Dorian Carloni, 2019. "Who Really Benefits from Consumption Tax Cuts? Evidence from a Large VAT Reform in France," American Economic Journal: Economic Policy, American Economic Association, vol. 11(1), pages 38-63, February.
    12. repec:osf:osfxxx:5emgn_v1 is not listed on IDEAS
    13. Franz W. Wagner & Stefan Weber, 2016. "Wird die Umsatzsteuer überwälzt? [Do Firms Pass on VAT?]," Schmalenbach Journal of Business Research, Springer, vol. 68(4), pages 401-421, December.
    14. Pascal Belan & Clément Carbonnier & Martine Carré, 2021. "Fiscal Devaluation with Endogenous Markups: Productivity and Welfare," Scandinavian Journal of Economics, Wiley Blackwell, vol. 123(4), pages 1159-1189, October.
    15. Clément Carbonnier, 2011. "Shifting on prices of per unit and ad valorem consumption taxes," Working Papers halshs-00872477, HAL.
    16. Rivas, Aldair & Chávez, Emmanuel & Rojas, Irvin & Zaragoza, Aaron, 2025. "The legal and real incidence of VAT Reforms in Mexico: Distributional effects and impacts on poverty," Economics Letters, Elsevier, vol. 248(C).
    17. Dissemin, uploaded via & Nauleau, Marie-Laure & Giraudet, Louis-Gaëtan & Quirion, Philippe, 2018. "Energy efficiency subsidies with price-quality discrimination," OSF Preprints 5emgn, Center for Open Science.
    18. Carbonnier, Clément, 2014. "The incidence of non-linear price-dependent consumption taxes," Journal of Public Economics, Elsevier, vol. 118(C), pages 111-119.
    19. Emmanuel Chávez & Cristóbal Domínguez, 2025. "Who pays for a VAT hike at an international border?," Fiscal Studies, John Wiley & Sons, vol. 46(2), pages 185-210, June.
    20. Alisa Frey & Justus Haucap, 2024. "VAT pass-through: the case of a large and permanent reduction in the market for menstrual hygiene products," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 31(1), pages 160-202, February.
    21. repec:hal:cepnwp:hal-05000473 is not listed on IDEAS
    22. Miguel Gómez-Antonio & Ignacio del Moral Arce & Miriam Hortas-Rico, 2022. "Are vat reforms an effective tool for promoting the consumption of culture? Evidence from a quasiexperiment in Spain," Working Papers. Collection A: Public economics, governance and decentralization 2203, Universidade de Vigo, GEN - Governance and Economics research Network.
    23. Clément Carbonnier, 2011. "Shifting on prices of per unit and ad valorem consumption taxes, estimation on prices of alcoholic beverages in France," Thema Working Papers 2011-20, THEMA (Théorie Economique, Modélisation et Applications), CY Cergy-Paris University, ESSEC and CNRS.

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