The 2010 cap is the same as in 2009, $106,800.00, at which point the Social Security amount withheld would be $6,621.60 (6.2%).

There is no cap on the Medicare insurance contribution, so the 1.45% amount will continue to be withheld on all earnings, and will be matched by your employer at the 1.45% rate for a total 3.90% for the year.

For more information, click on the Related Link, below.