See attached Q&A question from IRS website that shows in the event your wages are below the threshold for being subject to the tax that you need to file Form 8959 to be given credit for your payment. ProSeries incorrectly limits the filing of this form unless your total Medicare wages are $200,000 or greater. ProSeries will therefore keep you from getting the extra tax payment you are entitled to when your employer, for whatever reason, has incorrectly deducted excess Medicare tax from your wages. And, as my clients found out, ExxonMobil will NOT change anything when you go back to them 10 months after the fact.