Is that 17.4 percent for those that actually pay taxes. Since almost half the population does not pay any income tax, maybe that is an average or a median which really doubles the tax rate on those who do pay. Then there is Social Security Tax, Medicare tax,sales tax, property tax, not to mention lecense fees, document fees, and any number of othr taxes. Are these included? As my Dad used to say, " Figures lie and liars figure".