Thank you for your reply and the form example you sent me. This is very helpful. The example you sent is exactly how Turbo tax shows the Form 8959 completed and the $217 additional medicare tax (that the employer already withheld on my sister's Form W-2) carried to Form 1040. She is filing single and no additional income other than her W2 wages. We will have to run the calculator on the numbers on page 2 of the 1040 to more fully understand that the $217 additional medicare tax is not being added to her tax liability.
