BUT...if you don't have your W-2, you need to WAIT for it....do not use paystubs !
Possible issues.
1) EDIT your W-2 and make sure your box 4 value is correct....sometimes people miss a decimal point, or accidentally double-hit a key.
Excess still off?
2) Make sure you are not adding SS and Medicare taxes together...they are separate entries on the software W-2 form. SS in box 5, and Medicare in box 6.
3) If box 4 seems to be the correct 6.2% of box 3, and you are getting the error...just drop a couple cents from the box 4 value entered.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
