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Tax Data For Wealth Concentration Analysis: An Application To Spanish Wealth Tax


  • José M-super-a Durán-Cabré
  • Alejandro Esteller-Moré


As recent studies in different countries show, tax data offer the opportunity to estimate income or wealth shares for the upper income groups. However, several critical points must be considered in order to avoid misleading conclusions: the interpolation technique used, legal amendments, and tax fraud. In this note we take Spanish wealth tax as a case study to assess the importance of these factors, and compare our results with those obtained by Alvaredo and Saez (2009 ). Although the results of the two analyses are very similar, our approach complements theirs by offering a more precise treatment of the correction of fiscal underassessment and tax fraud in real estate, which is the main asset in Spaniards' portfolios. Copyright 2010 The Authors. Review of Income and Wealth 2010 International Association for Research in Income and Wealth.

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  • José M-super-a Durán-Cabré & Alejandro Esteller-Moré, 2010. "Tax Data For Wealth Concentration Analysis: An Application To Spanish Wealth Tax," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 56(3), pages 620-631, September.
  • Handle: RePEc:bla:revinw:v:56:y:2010:i:3:p:620-631

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    References listed on IDEAS

    1. Ohlsson, Henry & Roine, Jesper & Waldenstrom, Daniel, 2006. "Long-Run Changes in the Concentration of Wealth: An Overview of Recent Findings," WIDER Working Paper Series 103, World Institute for Development Economic Research (UNU-WIDER).
    2. Facundo Alvaredo & Emmanuel Saez, 2009. "Income and Wealth Concentration in Spain from a Historical and Fiscal Perspective," Journal of the European Economic Association, MIT Press, vol. 7(5), pages 1140-1167, September.
    3. Gastwirth, Joseph L, 1972. "The Estimation of the Lorenz Curve and Gini Index," The Review of Economics and Statistics, MIT Press, vol. 54(3), pages 306-316, August.
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