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Taxation optimale de la consommation et biens informels

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  • Jean-François Gautier

    (DIAL, Université Paris IX)

Abstract

This paper analyses whether it is worth taxing the black market. A theoretical optimal tax model provides a first analytical discussion. An empirical version allows us to estimate an optimal tax system for Madagascar. For reasonable inequality aversion parameters, the taxation’s rate of the informal good is always quite below the formal good’s one. Nevertheless, tax rates on informal goods are above the actual rates. Informal goods could be optimally subsidised for higher inequality aversion parameters. _________________________________ La question posée par ce papier est la suivante : dans quelle mesure est-il souhaitable de taxer le secteur informel ? Un modèle théorique de taxation optimale permet d’abord de fournir une réponse analytique à cette question. Une version empirique du modèle permet ensuite d’estimer les taux de taxation optimaux à Madagascar. On montre ainsi que la taxation optimale des biens informels est toujours très inférieure à celle des biens formels. Néanmoins, pour des degrés de progressivité « raisonnables », le taux de taxation optimal moyen du secteur informel est nettement plus important que le taux effectif actuel. Toutefois, la solution optimale peut être de subventionner le secteur informel pour des degrés élevés de progressivité.

Suggested Citation

  • Jean-François Gautier, 2001. "Taxation optimale de la consommation et biens informels," Working Papers DT/2001/15, DIAL (Développement, Institutions et Mondialisation).
  • Handle: RePEc:dia:wpaper:dt200115
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