A: For most Americans, Part A of Medicare is premium-free by virtue of taxes paid during working years. If you (or your spouse) worked at least 40 quarters (10 years) and paid taxes during that time, you should not have a premium for Part A. If you did not work at least 40 quarters, there may be a premium. For example, if you worked less than 40 quarters but more than 30, your monthly premium would be $252. Less than 30 quarters and the monthly premium would be $458. If you have questions, call us!