Mike will earn $2,400,000 for the year. Social security withholds 6.2% which equals $148,800, though Social security has a maximum base amount of $118,500. So the total amount withheld for Social Security will be $118,500. Medicare withholds 1.45% which equals $34,800. So the total amount withheld for Medicare will be $34,800. The total withheld from both Social Security and Medicare would be $153,300.