Medicare Part B Late Enrollment Penalty Calculator
Find out exactly how much a delayed Part B enrollment could cost you — every month, for the rest of your life.
How This Tool Works
The Medicare Part B late enrollment penalty is a permanent surcharge added to your monthly Part B premium if you didn't enroll when you were first eligible and didn't have qualifying coverage from an employer. This calculator shows you exactly how much that penalty adds up to — and why acting during your enrollment window matters.
Enter Your Dates
Provide the date you first became eligible for Medicare Part B and the date you actually enrolled.
Calculate the Gap
The tool identifies each full 12-month period you went without Part B and without creditable coverage.
See Your Penalty
Your penalty is displayed as a monthly dollar amount added permanently to your Part B premium.
Key Facts About the Part B Penalty
- The penalty is 10% of the standard Part B premium for each full 12-month period you delayed
- It is added permanently to your monthly premium — it does not go away after a set number of years
- The penalty only applies if you did not have employer-sponsored or union coverage that qualifies as "creditable"
- If you had employer coverage and later lose it, you typically have an 8-month Special Enrollment Period to sign up penalty-free
- The penalty amount increases each year as the standard Part B premium rises
Not sure if your employer coverage qualifies? Many people are surprised to find out their employer plan did — or didn't — count as creditable coverage for Medicare purposes. Call us before you make any enrollment decisions to avoid a penalty you can't undo.
Worried About a Penalty? Let's Talk.
If you've delayed enrolling in Part B, or you're not sure whether your employer coverage qualifies, our agents can review your situation and help you enroll correctly — before a small delay becomes a permanent cost.
Or call us directly: (863) 225-2875