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La progressivité de l'imposition du revenu : une comparaison Québec-Ontario

Author

Listed:
  • Luc Godbout
  • Suzie St-Cerny

Abstract

This study compares the progressivity of the income tax of Quebec and Ontario. After observing the predominance of income taxation in Quebec and Ontario, by way of international and interprovincial comparisons and illustrating the presence of progressivity in both provinces, progressivity indicators are described. Using these indicators, we measured the progressivity of the Quebec and Ontario tax systems for four different family situations and six levels of income. The results show that in certain situations, Quebec's tax system is more progressive while in others, the reverse is true. More specifically, Quebec's tax system is more progressive for changes in income at the lower end of the income scale while in general Ontario's system is more progressive for higher incomes. These results confirm the greater concentration of Ontario's income tax on high-income taxpayers that we have previously illustrated in the study. L'étude compare la progressivité des impôts sur le revenu du Québec et de l'Ontario. Après avoir constaté l'importance de l'imposition du revenu au Québec et en Ontario, par des comparaisons internationales et interprovinciales, et avoir illustré la présence de progressivité dans les deux cas, nous présentons des indicateurs de progressivité. À l'aide de ces indicateurs, nous avons mesuré la progressivité des régimes d'imposition québécois et ontarien pour quatre situations familiales différentes et pour six niveaux de revenus. Les résultats montrent que, dans certaines situations, la progressivité est plus grande au Québec alors que, dans d'autres cas, la progressivité est supérieure en Ontario. Plus précisément, la progressivité est plus grande au Québec pour les variations de revenus au bas de l'échelle des revenus tandis qu'elle est en général plus élevée en Ontario pour les revenus supérieurs. Ces résultats confirment la plus grande concentration de l'impôt ontarien sur le revenu auprès des contribuables à revenu élevé que nous avions précédemment illustrée dans l'étude.

Suggested Citation

  • Luc Godbout & Suzie St-Cerny, 2005. "La progressivité de l'imposition du revenu : une comparaison Québec-Ontario," CIRANO Working Papers 2005s-17, CIRANO.
  • Handle: RePEc:cir:cirwor:2005s-17
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    File URL: https://cirano.qc.ca/files/publications/2005s-17.pdf
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