Table A7

Comparison of Piketty and Saez's results with Sommeiller and Price's U.S. results

From Table 1. Income growth from 1979 to 2007, overall and for the top 1% and bottom 99%, U.S. and by state and region
Average real income growth Share of total growth (or loss) captured by top 1%
Source Overall Top 1% Bottom 99%
Sommeiller and Price 36.9% 200.5% 18.9% 53.9%
Piketty and Saez 37.3% 224.0% 16.6% 59.8%
From Table 2. Top 1% share of all income, U.S. and by state and region, 1928, 1979, 2007
Change in income share of the top 1% (percentage points)
 Source 1928 1979 2007 1928–1979 1979–2007
Sommeiller and Price 23.4 9.9 21.8 -13.4 11.8
Piketty and Saez 23.9 9.0 19.6 -15.0 10.7
From Table 3. Income growth from 2009 to 2011, overall and for the top 1% and bottom 99%, U.S. and by state and region
Average real income growth Share of total growth (or loss) captured by top 1%
 Source Overall Top 1% Bottom 99%
Sommeiller and Price 1.5% 11.5% -0.7% 140.9%
Piketty and Saez 1.3% 9.9% -0.6% 135.6%
From Table 4. Ratio of top 1% income to bottom 99% income, U.S. and by state and region, 2011
Source Average income of the bottom 99% Average income of the top 1% Top-to-bottom ratio
Sommeiller and Price $42,694 $1,040,506 24.4
Piketty and Saez $42,766 $1,035,217 24.2
From Table 5. Income threshold of top 1% and top .01%, and average income of top .01%, U.S. and by state and region, 2011
Source Income threshold of top 1% Income threshold of top .01% Average income of top .01%
Sommeiller and Price $348,498 $7,508,585 $23,381,212
Piketty and Saez $361,034 $7,956,076 $22,772,975

Note: Data are for tax units.

Source: Authors' analysis of state-level tax data from Sommeiller (2006) extended to 2011 using state-level data from the Internal Revenue Service SOI Tax Stats (various years), and Piketty and Saez (2012)

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