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Solidarité intergénérationnelle et dette publique

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  • Xavier Timbeau

    (Observatoire français des conjonctures économiques)

Abstract

Financer une dépense par la dette ou par l’impôt est-il équivalent ? Ricardo, formalisé et étendu par Barro, nous dit que la dette n’est qu’un impôt futur et que des agents conscients du futur ne doivent pas considérer le recours à la dette autrement que comme un paiement différé. Mais le cadre de Barro est si particulier que le résultat obtenu n’est pas vraisemblable. La dette publique suspend la question du financement. Comme les générations passent, les plus âgés échappent à la possibilité de la taxation alors que les plus jeunes s’y trouvent exposés. Mais l’analyse du choix de financement ne peut se limiter à qui paie. Elle doit également prendre en compte ce que le choix de dépense et de son financement implique comme modification de la trajectoire de l’économie. La dépense profitera, suivant sa nature, plus ou moins aux générations actuelles ou aux futures. Le mode de financement ne doit se choisir qu’en fonction de ce critère. Plus généralement, il est vain de chercher à n’avoir aucun impact sur les générations futures. Nos choix ont des conséquences futures, directement ou non. Nous sommes liés aux générations futures.

Suggested Citation

  • Xavier Timbeau, 2011. "Solidarité intergénérationnelle et dette publique," Sciences Po publications info:hdl:2441/5l6uh8ogmqi, Sciences Po.
  • Handle: RePEc:spo:wpmain:info:hdl:2441/5l6uh8ogmqildh09h61kh4poj
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    References listed on IDEAS

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    Cited by:

    1. Xavier Timbeau, 2012. "The fireman and the architect," Chapters,in: What’s Right with Macroeconomics?, chapter 1, pages 8-32 Edward Elgar Publishing.

    More about this item

    Keywords

    dette publique; générations futures; impôt; dépenses publiques; éducation;

    JEL classification:

    • I20 - Health, Education, and Welfare - - Education - - - General
    • H2 - Public Economics - - Taxation, Subsidies, and Revenue
    • H5 - Public Economics - - National Government Expenditures and Related Policies
    • H6 - Public Economics - - National Budget, Deficit, and Debt
    • D6 - Microeconomics - - Welfare Economics

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