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What Do We Know About Evolution of Top Wealth Shares in the United States?

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  • Kopczuk, Wojciech

Abstract

I discuss available evidence about the evolution of top wealth shares in the United States over the last one hundred years. The three main approaches ? Survey of Consumer Finances, estate tax multiplier techniques and capitalization method ? generate generally consistent findings until mid-1980s but diverge since then, with capitalization method showing a dramatic increase in wealth concentration and the other two methods showing at best a small increase. I discuss strengths and weaknesses of different approaches. The increase in capitalization estimates since 2000 is driven by a dramatic and surprising increase in fixed income assets. There is evidence that estate tax estimates may not be sufficiently accounting for mortality improvements over time. The non-response and coverage issues in the SCF are a concern. I conclude that changing nature of top incomes and the increased importance of self-made wealth may explain difficulties in implementing each of the methods and account for why the results diverge.

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  • Kopczuk, Wojciech, 2015. "What Do We Know About Evolution of Top Wealth Shares in the United States?," CEPR Discussion Papers 10368, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:10368
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    Keywords

    Wealth inequality;

    JEL classification:

    • D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution

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