Federal income taxes as a proportion of income increase steadily from 2% at the 10th percentile (that is, a family ranked tenth from the bottom out of 100) to 14% at the 90th percentile, but then falls off slightly to 13% at the very top, reflecting the favorable treatment of capital gains and investment income under the Bush administration’s income-tax laws.
按收入比例征收的联邦收入税是从最底部开始稳步增加，从在第10百分位（即一个家庭排名从底部往上算排在最底层的10%的位置）的2 ％ ，到在90百分位的14 ％，但到了最高收入阶层的时候，略为减少到13 ％，这反映了布什政府的所得税法对资本收益和投资收入的优惠待遇。