Yes, in most cases you should sign up for Medicare when you turn 65 even if you have COBRA. COBRA isn't coverage based on current employment, so it doesn't let you delay Part B without risk. When COBRA ends, you don't get a Special Enrollment Period, and waiting can mean a coverage gap and a lifelong Part B penalty. Once you're eligible for Medicare, COBRA may only pay a small portion of your costs. Here is how the rules work and what to do if you're already on COBRA.
Does COBRA count as employer coverage for Medicare?
No. The Medicare & You 2027 handbook says COBRA isn't considered coverage based on current employment and doesn't count as current employer coverage for the Special Enrollment Period that lets working people delay Part B. Retiree health plans and VA coverage are treated the same way.
That matters because the rules for delaying Part B are built around active work. If you or your spouse are still working and covered by that employer's plan, you can usually wait. COBRA is continuation coverage after the job has ended, so the protection doesn't apply.
What happens if I wait until COBRA ends to get Medicare?
Medicare.gov lists COBRA ending as a situation that does not qualify for a Special Enrollment Period. If you skip your Initial Enrollment Period and rely on COBRA, you may have to wait for the General Enrollment Period, January 1 to March 31, with coverage starting the month after you sign up. You may also pay a Part B late enrollment penalty of 10% for each full 12-month period you could have had Part B but didn't, for as long as you have Part B.
There is a second risk. Once you're eligible for Medicare, Medicare generally pays first and COBRA pays second. If you don't have Part B, COBRA may refuse to pay the part Medicare would have paid, leaving you with large bills even though you thought you were covered.
When should I sign up if I'm on COBRA?
It depends on when your job-based coverage ended compared with your 65th birthday:
| Your situation | When to sign up for Part B |
|---|---|
| You left work and started COBRA before 65 | During your 7-month Initial Enrollment Period around your 65th birthday |
| You worked past 65 with employer coverage, then left and took COBRA | Within 8 months after the job or the employer coverage ends, whichever happens first, whether or not you take COBRA |
| You turn 65 while already on COBRA | During your Initial Enrollment Period; COBRA doesn't extend it |
| Your COBRA is ending and you never took Part B | General Enrollment Period, and a late penalty may apply |
The handbook is explicit that after coverage based on current employment ends, you have 8 months to sign up for Part B without a penalty, whether or not you choose COBRA. The 8 months start running when the job or the job-based coverage ends, not when COBRA ends.
If you are on COBRA right now and turning 65 soon, take these steps in order:
- Find the date your job, or your spouse's job, actually ended. That date controls the 8-month clock.
- Find your Initial Enrollment Period, which starts 3 months before the month you turn 65.
- Sign up for Part B through Social Security in whichever window closes first.
- Tell your COBRA administrator when Medicare starts so they coordinate as the second payer.
- Line up a Medicare Supplement or Medicare Advantage plan and Part D to start the same day as Part B.
If you have already missed both windows, sign up during the next General Enrollment Period rather than waiting longer, because the penalty grows with each full year you go without Part B.
Should I keep COBRA after I get Medicare?
Sometimes it makes sense to keep COBRA for a while alongside Medicare, especially if it covers things Medicare doesn't, such as dental or vision, or covers a spouse or dependents who aren't on Medicare yet. The handbook notes there may be reasons to take Part B instead of, or in addition to, COBRA. But once Medicare is your main coverage, compare the cost of COBRA with a Medicare Supplement or Medicare Advantage plan. For many people, Medicare plus a supplement or plan is less expensive and more complete.
Keep in mind that a spouse who isn't 65 yet may still need COBRA or another plan. Our page on Medicare and spouse coverage covers that situation.
What about drug coverage and Medigap with COBRA?
For drugs, check whether your COBRA drug coverage is creditable, meaning it is expected to pay at least as much as standard Medicare drug coverage. Your plan should send a notice that says so. If it isn't creditable, join a Part D plan when you're first eligible to avoid a Part D penalty.
For a Medicare Supplement, your 6-month Medigap Open Enrollment Period starts when you are 65 and enrolled in Part B, and it can't be restarted. Delaying Part B because of COBRA doesn't help you here. Once the window opens, use it. Our Medicare Supplement guide explains the plan options.
Is the rule different in North Carolina, South Carolina or Tennessee?
No. The COBRA and Part B rules are federal, so they are the same whether you retired from a Charlotte employer, a company in York County or a Nashville health system. Some states also have continuation rules for smaller employers. Those are treated the same way for Medicare, because they are still not coverage based on current employment. What differs by state is the set of Medicare Supplement and Medicare Advantage choices available once you enroll.
How The Jordan Insurance Agency can help
The COBRA decision is easy to get wrong because the COBRA paperwork rarely explains the Medicare rules. We'll look at your COBRA end date, your 65th birthday and any spouse on the plan, then map out exactly when to sign up for Part B and Part D and how to line up a Medicare Supplement or Medicare Advantage plan so there is no gap. Schedule Your Consultation to review your options.
Reviewed by Billy Jordan Jr., licensed insurance agent · Licensing & Credentials · Last reviewed November 12, 2026 · Sources are linked in the answer above.
Licensing: Billy Jordan Jr. is licensed in 23 states, including North Carolina, South Carolina and Tennessee. See Licensing & Credentials.
Office: North Carolina and South Carolina clients are served by the Charlotte office, 3540 Toringdon Way, Suite 200, Charlotte, NC 28277, (704) 926-7565. Tennessee clients are served by the Nashville office, 159 4th Ave N, Suite 100, Nashville, TN 37219, (615) 558-6082.
Medicare disclaimer: We do not offer every plan available in your area. Currently we represent 8 organizations which offer 91 products in North Carolina, 7 organizations which offer 70 products in South Carolina, and 7 organizations which offer 65 products in Tennessee. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options. Read the full Medicare disclaimer.
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