Say you make 20萬,AMT deduction is 7萬, so you pay tax on 13萬。assuming you don't have family, no exemptions, don't save for 401k, your tax rate is 26% (fed) + 10% (state) = 36% on 13萬 你的 effective tax is 23%, that's maximum。如果你有家庭減1萬,存了401K減1萬,自住房貸款減1萬,你your tax rate is 26% (fed) + 10% (state) = 36% on 10萬 你的 effective tax only 18%, 這沒有算上其他 itemized deductions. 所以jjjj is right, if your effective tax rate is that high, you must be a millionare.