The amount of social security and Medicare tax withheld from your pay appears in Boxes 4 and 6 of IRS Form W-2. There is a maximum amount of wages subject to social security tax.
2014
The maximum amount of wages subject to the social security tax (6.2 percent) for 2014 is $117,000. There is no limit on the amount of wages subject to the Medicare tax (1.45 percent).
2015
The maximum amount of wages subject to the social security tax (6.2 percent) for 2015 is $118,500. There is no limit on the amount of wages subject to the Medicare tax (1.45 percent).
2016
The maximum amount of wages subject to the social security tax (6.2 percent) for 2016 is $118,500. There is no limit on the amount of wages subject to the Medicare tax (1.45 percent).