How much is the Medicare late enrollment penalty?

  • For Part A, your monthly premium may go up 10%, and you have to pay a higher premium for twice the number of years you could have had Part A.


  • For Part B, you have to pay 10% increased premium as long as you have part B for each full 12 months you could have had Part B but didn’t sign up for it.


  • For Part D, the cost of the late enrollment penalty depends on how long you went without Part D or creditable prescription drug coverage. The penalty is calculated by multiplying 1% of the “national base beneficiary premium” ($33.19 in 2019) times the number of full, uncovered months you didn’t have Part D or creditable coverage. The monthly premium is rounded to the nearest $.10 and added to your monthly Part D premium. The national base beneficiary premium may increase each year, so your penalty amount may also increase each year.
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