Compléter Federal payroll withholding Version en ligne Fill in the blanks to see if you are a master of the realm of federal payroll withholding taxes. par Debera Salam 1 $1million Medicare Security 2 Additional supplemental $1million Social Medicare 39 $200 A rate of 6 . 2% applies to tax , 1 . 45% to tax and 0 . 9% to tax . A rate of . 35% applies to wages in excess of , 000 . A rate of 25% applies to wages of less than and . 6% for wages in excess of .