"And the rate of increase is even higher for the very richest of the rich: the top 400 income earners in the United States. The average income of the top 400 doubled during the first seven years of the Bush Administration. So by 2007, the top 400 averaged $344.8 million per person, up 31% from an average of $263.3 million just one year earlier.How are these huge gains possible for the top 400? It's due to cuts in the tax rates on capital gains and dividends, which were down to a mere 15% in 2007 thanks to the tax cuts proposed by the Bush Administration and passed by Congress in 2003. Since almost 75% of the income for the top 400 comes from capital gains and dividends, it's not hard to see why tax cuts on income sources available to only a tiny percent of Americans mattered greatly for the high-earning few.Overall, the effective tax rate on high incomes fell by 6% in the Bush era, so the top 400 had a tax rate of 20% or less in 2007, far lower than the marginal tax rate of 35% that the highest income earners (over $372,650) supposedly pay."
Considering 75% of their income is not "payroll", it isn't that hard to get around.