Medicare Part D Late Enrollment Penalty Calculator
Skipping drug coverage can be costly. Calculate what a delay in Part D enrollment is costing you each month.
How This Tool Works
If you didn't enroll in a Medicare Part D prescription drug plan when you were first eligible — and you went 63 or more consecutive days without other creditable drug coverage — Medicare charges a late enrollment penalty. This penalty is added to your monthly Part D premium and stays with you for as long as you have Part D coverage.
Enter Your Gap
Provide the date you first became eligible for Part D and when you actually enrolled in creditable drug coverage.
Calculate the Penalty
The tool calculates your penalty based on the number of uncovered months multiplied by 1% of the national base beneficiary premium.
Understand Your Options
See your estimated penalty amount and learn how to avoid making the gap any larger.
Key Facts About the Part D Penalty
- The penalty is 1% of the national base beneficiary premium × the number of uncovered months
- It is rounded to the nearest $0.10 and added to your monthly Part D plan premium
- The penalty amount adjusts each year as the national base beneficiary premium changes
- It applies as long as you remain enrolled in a Medicare drug plan — it does not expire
- Creditable coverage includes most employer plans, VA drug benefits, and TRICARE — your plan must confirm coverage is creditable in writing each year
Don't let the gap grow. Even if you already have a penalty, enrolling during the next available enrollment period stops it from getting larger. Our agents can help you enroll in a plan that minimizes your ongoing costs while meeting your prescription needs.
Ready to Get the Right Drug Coverage?
Our agents compare every Part D plan available in your area, matching your prescriptions to the plan that costs you least — penalty or not. Let's find the right coverage together.
Or call us directly: (863) 225-2875