Free Tools
Part D Penalty Estimator
Going without creditable drug coverage after you're first eligible adds a permanent Part D penalty — roughly 1% of the national base premium for each month you went without. Like the Part B penalty, it lasts for life. We'll estimate yours and help you stay penalty-free.
Use the Part D penalty estimator below
Enter the number of months you went (or would go) without creditable drug coverage — the calculator uses the official 2026 national base premium ($38.99/mo) to show your exact monthly and annual penalty. Even one month matters: the penalty compounds and lasts for life.
Questions, answered
I don't take any drugs — do I still need Part D?
Often yes, to avoid a lifelong penalty later. A low-cost Part D plan now can be cheaper than the penalty you'd pay if you enroll later.
How is the Part D penalty calculated?
Roughly 1% of the national base beneficiary premium ($38.99/month in 2026) for every full month you went without Part D or other creditable drug coverage after first becoming eligible, rounded to the nearest $0.10 and added to your premium for as long as you have Part D.
What counts as creditable drug coverage that avoids the penalty?
Coverage expected to pay, on average, at least as much as Medicare's standard Part D coverage — common examples include employer or union drug plans, TRICARE, and VA prescription benefits. We can help confirm whether a specific plan you had counts as creditable.
Does the Part D penalty ever expire?
No — like the Part B penalty, it's permanent once assessed and applies for as long as you're enrolled in any Part D plan. It doesn't reset if you switch plans.
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