Medicare question

Does COBRA Protect You from Part B and Part D Penalties?

If you recently left your job and chose to continue your employer’s health coverage through COBRA but skipped signing up for Medicare Parts B and D, you might be concerned about penalties. Here’s what you need to know.

Last updated: August 17, 2026

What is COBRA?

COBRA stands for Consolidated Omnibus Budget Reconciliation Act. It allows employees who leave their job to keep the same health insurance coverage they had through their employer for a limited time—usually up to 18 months. While this can be helpful in maintaining continuous coverage, it does not protect you from Medicare penalties if you delay enrolling.

What Are Medicare Part B and Part D Late-Enrollment Penalties?

Medicare has different parts that cover various aspects of healthcare:

Part A covers hospital stays.

Part B covers doctors' visits and outpatient care.

Part D covers prescription drugs.

If you miss the initial enrollment period for Parts B or D, which typically starts three months before your 65th birthday and ends three months after, you may face late-enrollment penalties. These penalties can be significant and last as long as you have Part B or Part D coverage.

How Does COBRA Coverage Affect Medicare Part B and Part D Late-Enrollment Penalties?

When you choose COBRA, it does not shield you from Medicare penalties for delaying enrollment in Parts B and D. If you are eligible for Medicare (usually at age 65) but delay signing up beyond the initial enrollment period because you have COBRA coverage, you may still incur penalties.

For Part B:

The penalty is a monthly premium increase of about 10% for every year you could have had Medicare but didn’t.

For Part D:

The penalty is a fixed amount added to your monthly premium for each month you delay enrollment beyond the initial period.

What Enrollment Timing Can Prevent Part B and Part D Late-Enrollment Penalties After COBRA?

To avoid these penalties, it’s important to sign up for Medicare Parts B and D during your Initial Enrollment Period (IEP). Here are some steps you can take:

1. Check Your Eligibility: You become eligible for Medicare when you turn 65 or if you have a disability. 2. Review Coverage Options: Make sure you understand what Part A, Part B, and Part D cover and how they complement your COBRA coverage. 3. Sign Up on Time: Don’t wait until the last minute to sign up for Medicare Parts B and D. Your IEP starts three months before the month of your 65th birthday and lasts through the third month after that date. 4. Consider Special Enrollment Periods (SEPs): If you lose COBRA coverage, you may qualify for a SEP to enroll in Medicare without penalties. However, this is not guaranteed and depends on specific circumstances.

Does COBRA Count as Coverage That Prevents Part B and Part D Penalties?

COBRA can be helpful in maintaining health insurance continuity when leaving employment, but it does not protect you from Medicare penalties if you delay enrolling in Parts B and D. To avoid these penalties, make sure to sign up for Medicare during your Initial Enrollment Period or take advantage of any Special Enrollment Periods that might apply to you.

Where should you look next?

What else do people ask about cOBRA?

• Medicare Late Enrollment Penalties: How to Avoid Them, What They Cost, and Whether You Can Appeal?
• What Is Creditable Coverage and How Does It Protect You from Part D Penalties?
• Can You Appeal a Medicare Penalty? What Counts as Equitable Relief?
• I Delayed Medicare Because My Employer Said It Was Fine. What Are My Options?
• How Is the Medicare Part D Late Enrollment Penalty Calculated?
• How Is the Medicare Part B Late Enrollment Penalty Calculated? And Does It Go Away?

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