Top Incomes in the Long Run of History

Abstract : A recent literature has constructed top income shares time series over the long run for more than twenty countries using income tax statistics. Top incomes represent a small share of the population but a very significant share of total income and total taxes paid. Hence, aggregate economic growth per capita and Gini inequality indexes are sensitive to excluding or including top incomes. We discuss the estimation methods and issues that arise when constructing top income share series, including income definition and comparability over time and across countries, tax avoidance, and tax evasion. We provide a summary of the key empirical findings. Most countries experience a dramatic drop in top income shares in the first part of the twentieth century in general due to shocks to top capital incomes during the wars and depression shocks. Top income shares do not recover in the immediate postwar decades. However, over the last thirty years, top income shares have increased substantially in English speaking countries and in India and China but not in continental European countries or Japan. This increase is due in part to an unprecedented surge in top wage incomes. As a result, wage income comprises a larger fraction of top incomes than in the past. Finally, we discuss the theoretical and empirical models that have been proposed to account for the facts and the main questions that remain open.
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Submitted on : Tuesday, November 20, 2012 - 9:54:25 AM
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Anthony Atkinson, Thomas Piketty, Emmanuel Saez. Top Incomes in the Long Run of History. Journal of Economic Literature, American Economic Association, 2011, 49 (1), pp.3-71. ⟨10.1257/jel.49.1.3⟩. ⟨halshs-00754557⟩

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