Des figures et des chiffres: Analyse de Pour une révolution fiscale, de Landais, Piketty et Saez (2011)

Yves Guiard ()
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Yves Guiard: LTCI - Laboratoire Traitement et Communication de l'Information - Télécom ParisTech - IMT - Institut Mines-Télécom [Paris] - CNRS - Centre National de la Recherche Scientifique

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Abstract: On the website of their recent book Pour une Revolution Fiscale, Landais, Piketty and Saez (2011) have provided the public with free access to all their quantitative data, inviting the readership to critically appraise and publicly discuss their work. Unfortunately, the book's graphical representations are technically inaccurate, offering a distorted view of the current French income taxation system. The authors' charts show that the income tax remains "slightly progressive up to middle-class layers", and then becomes "definitely regressive". In fact, judging directly from the authors' data, the regressivity in question, which concerns hardly 10% of highest incomes, takes the form of a brutal collapse of the contribution which neither the graphical representations nor the analyses of the book account for.

Keywords: Inequality; income taxation; Lorenz curve; level of measurement; fractiles; graphical representation; Inégalité; impôt sur le revenu; courbe de Lorenz; niveau de la mesure; représentation graphique (search for similar items in EconPapers)
Date: 2012-03-20
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