Thanks for the reply. I didn't include all the context in my posts. I applied for Medicare in Jan this year, so I knew my coverage was backdated for 6 months and knew I contributed more than the allowed amount for a half year of HDHP coverage. However, I think I figured out how to enter things correctly. On the TT page where it asks what type of HDHP coverage you had for 2025, you must answer "different plan types" if you were on Medicare at any point in 2025. I did not select this option at first because I had maintained my Family HDHP coverage all year and selected that option. Once "different plan types" is selected, more options appear on the next screen. On the next screen "Medicare or None" can be selected for the months that Medicare was active. Selecting the months I had medicare finally changed the totals.
