One missed deadline can follow you for as long as you're on Medicare.

The Part B penalty goes all the way back to the day you turned 65, and it’s monthly, for life. This isn’t a one-time fee. It’s added to your premium for as long as you’re on Medicare.

I had a gentleman who came in, he was around 80. His Part A started when he was 65, so he carried a 15-year penalty. What you don’t know will hurt you, not for today, but for the rest of your Medicare life.

Let’s look at the rules before they turn into a bill you can’t undo.

One missed deadline can follow you for as long as you're on Medicare.

The Part B penalty goes all the way back to the day you turned 65, and it’s monthly, for life. This isn’t a one-time fee. It’s added to your premium for as long as you’re on Medicare.

I had a gentleman who came in, he was around 80. His Part A started when he was 65, so he carried a 15-year penalty. What you don’t know will hurt you, not for today, but for the rest of your Medicare life.

Let’s look at the rules before they turn into a bill you can’t undo.

The Part B Penalty:
Permanent and Monthly.

The Part B late enrollment penalty is added to your premium and stays there for as long as you have Medicare. The longer you wait past your enrollment window, the larger it grows. Wait fifteen years and that penalty rides your premium every single month.

The Part D Penalty people don't see coming.

Just because you’re getting your Medicare card does not mean you’re signed up with a prescription drug plan. If you go without creditable drug coverage and enroll later, a Part D penalty gets added to your premium too. It’s smaller than the Part B penalty, but it’s still permanent.

How Employer and COBRA mistakes create penalties.

Many penalties trace back to a misunderstanding about employer coverage or COBRA. Someone assumes they’re protected, delays enrolling, and later discovers the coverage didn’t count. Understanding the enrollment periods and what qualifies as creditable coverage is how you avoid this.

Ask Toni

Frequently Asked Questions

How long does the Part B penalty last?

For as long as you’re on Medicare. It’s added to your monthly premium permanently, and it grows the longer you delayed enrolling.

Yes. If you go without creditable prescription drug coverage and enroll later, a penalty can be added to your Part D premium, permanently.

Not all coverage counts as creditable for Medicare, and COBRA in particular does not protect you from the Part B penalty. This is one of the most common reasons people end up penalized.

Know more

Read the related articles:

Your next step:

There are no do-overs on a Penalty.

Once a penalty is on your premium, it’s very hard to undo. The best protection is understanding the rules before a deadline passes. The Medicare 2026 Roadmap lays out the enrollment periods and penalty rules in plain English.

Your next step:

There are no do-overs on a Penalty.

Once a penalty is on your premium, it’s very hard to undo. The best protection is understanding the rules before a deadline passes. The Medicare 2026 Roadmap lays out the enrollment periods and penalty rules in plain English.