The 2013 Medicare Part B monthly premium was $104.90, while the 2013 Medicare Part A monthly premium was $441. Anyone who paid Medicare payroll taxes for at least 40 quarters or who was married to someone who paid them is exempt from Medicare Part A premiums.
As of 2015, most people still pay a monthly premium of $104.90 per month for Medicare Part B, but the premium is linked to income. Taxpayers filing singly who earn more than $214,000 and those married filing jointly who earn more than $428,000 pay the highest Medicare part B premiums -- $335.70 per month. People who purchase Medicare Part A pay $407 per month. Only 1 percent of Medicare Part A recipients must pay the premium.