- You did not pay someone to prepare the return so leave the last boxes empty. - Congratulations! You have completed your taxes. - According to the table below, what was Tasha's marginal tax rate? Your average tax rate is the proportion of total taxable income eamed into your tax liability. (Taxable income can be found on line 6 and your tax liability can be found on line 10.) What was Tasha's average tax rate? - You did not pay someone to prepare the return so leave the last boxes empty. - Congratulations! You have completed your taxes. - According to the table below, what was Tasha's marginal tax rate? Your average tax rate is the proportion of total taxable income eamed into your tax liability. (Taxable income can be found on line 6 and your tax liability can be found on line 10.) What was Tasha's average tax rate