Table A7

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

From Table 1. Income growth from 2009 to 2012, 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 6.3% 36.8% -0.4% 105.5%
Piketty and Saez 6.0% 31.4% 0.4% 94.8%
From Table 2. Ratio of top 1% income to bottom 99% income, U.S. and by state and region, 2012
Source Average income of the bottom 99% Average income of the top 1% Top-to-bottom ratio
Sommeiller and Price $43,713 $1,303,198 29.8
Piketty and Saez $44,071 $1,264,065 28.7
From Table 3. Income threshold of top 1% and top .01%, and average income of top .01%, U.S. and by state and region, 2012
Source Income threshold of top 1% Income threshold of top .01% Average income of top .01%
Sommeiller and Price $385,195 $9,912,787 $34,739,488
Piketty and Saez $393,941 $10,256,235 $30,785,699
From Table 4. 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 5. 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

Note: Data are for tax units.

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

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