What is the Part B late enrollment penalty and how long does it last?
The short answer
The Part B late enrollment penalty is an extra charge added to your monthly Part B premium if you did not sign up when you were first eligible and did not have qualifying other coverage. It is permanent and grows the longer you wait.
The full explanation
If you were eligible for Part B and did not enroll during your Initial Enrollment Period, and you did not have other qualifying coverage like employer-sponsored health insurance through active employment, Medicare can add a penalty to your premium. The penalty is 10 percent of the standard Part B premium for every full 12-month period you went without coverage. So if you delayed two years, you would owe a 20 percent surcharge on top of the regular premium. What makes this penalty particularly significant is that it does not go away. You pay it every month for as long as you have Part B. Over time, that adds up to a meaningful amount of extra spending. The good news is that if you delayed because you had qualifying employer coverage, you are likely eligible for a Special Enrollment Period and can sign up without the penalty. The rules around what counts as qualifying coverage can be a little technical, and getting it wrong can be costly, so it is worth confirming your situation with a licensed agent or a free counselor before you assume you are either protected or penalized.
Related Medicare Resources
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Utah residents can get free help sorting through enrollment situations like this through the Aging and Disability Resource Centers (ADRC), which provides unbiased Medicare counseling at no cost.
What this means for you
For you, this means delaying Part B enrollment without qualifying coverage is one of the more expensive Medicare mistakes you can make, because the penalty follows you for life and increases the longer you wait.
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