I don't have any recent statistics, but according to the Congressional Budget Office "the average effective federal tax rate for households in the lowestquintile of income earners in 2005 was 4.3 percent, while the secondlowest quintile paid an average effective rate of 9.9 percent thatyear." I'm not sure if that figure includes payroll taxes, but I know it doesn't account for sales, utility, and property taxes paid by the average person.