How often does Medicare increase premiums?

Medicare calculates new premiums each year, meaning the amount payable increases depending on a range of factors, explains Senior Corps. These factors include the current costs of medical care and the total household adjusted amount of income.

Medicare Part A, B or D recipients receive notification of new prices by the end of December, and they pay new rates starting on January of the following year, according to Senior Corps. Private insurance companies determine the premiums of Medicare Part C. Most people with Medicare Part A do not pay a premium, while recipients of Medicare Part B and D pay a premium each month.