I am already collecting Social Security and I turn 65 in December. I understand that I will be automatically enrolled in Medicare, with coverage starting in Dec. When will my part B premium start being deducted from my monthly social security check? will this start in Dec? or earlier?

Hi,

Assuming that you weren't born on December 1st, your Part B Medicare premiums will be withheld from your benefit payments starting in December. The Social Security payment that you receive in December is actually for the month of November, but Medicare premiums are withheld in the month that the premium covers.

Your Medicare coverage will begin on the 1st day of December, regardless of what day in December you were born. However, if you were born on December 1st, your Medicare coverage would begin November 1st and your premiums would be withheld starting with the benefit payment you receive in November.

Best, Jerry