If you are using the Free Edition, you cannot enter itemized deductions like Part D premiums. Those are an itemized deduction --- which will have no effect on your tax due or refund unless you are also itemizing mortgage interest, property tax, and a whole lot of other out of pocket medical expenses. And...just trying to enter Part D will trigger an upgrade to a paid version of the online software.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
