The IRS data, based on a large sample of tax returns, are for 'adjusted gross income, ' which is income after some deductions, such as for alimony and contributions to individual retirement accounts.

美国国税局的上述数据是在对退税数据进行抽样调查后得出的，是统计“调整后毛收入”的副产品。这一收入是指总收入减去赡养费和个人退休帐户缴款等无需纳税部分后的收入。

youdao

Here, for 2008 (as reported by the IRS and calculated by Forbes) are the average effective individual income tax rates, as a percentage of adjusted gross income, for various income groups.

FORBES: If Newt Had His Way, Mitt Would Pay Closer To 0% Tax

The gross tax gap 71% comes from individual income taxes.

FORBES: Live Blogging The President's Economic Recovery Advisory Board Meeting On Taxes

For individual investors holding these stocks (or those of companies issuing special dividends), reported gross income for 2012 will rise.

FORBES: Dividends' Unintended Consequences