I got involved in a discussion on Ed Brayton's blog earlier today, which referenced yesterday's Tea-bag 'protests'. As a result, I ended up doing some research on pre/post tax income from 1979 to 2006. Taxes in this case is defined as 'effective' tax rates according to Congressional Budget Office (CBO) guidelines, not some 'subset', or arbitrary, or marginal rates. These are the taxes actually paid, and the income actually retained. Based on the data presented by the CBO, with all dollars equalized to the 2006 value, the richest 1% of Americans saw their incomes after taxes increase by 256% since 1979. By comparison, the poorest 20% of Americans saw their income increase by only 11% after taxes over the same time period. Putting this another way - in 1979 the wealthiest 1% earned, on average, 22.6 times the poorest 20% ($337,100 -v- $14,900). By 2006, the wealthiest 1% had extended their lead to a staggering multiple of 72.75 times the poorest 20% ($1,200,300 -v- $16,500).