COBRA and Medicare
COBRA feels like your old coverage. Medicare doesn't treat it that way.
COBRA lets you keep your employer's group health plan for a while after your job ends. But for Medicare, COBRA isn't coverage based on current employment, and misunderstanding that is one of the most common causes of Part B penalties.
The timing trap
If you delayed Part B because of job-based coverage, you have 8 months after your employment ends to sign up without a penalty. That clock starts when the job ends, not when COBRA ends. If you stay on COBRA past those 8 months without Part B, you may face a penalty and have to wait for the General Enrollment Period.
If you already have Medicare when COBRA starts
Medicare generally pays first and COBRA second. COBRA may still be useful, for example to cover a younger spouse or for drug or dental coverage.
If you become eligible for Medicare while on COBRA
Your COBRA coverage may end when you enroll in Medicare, and Medicare usually pays first. Sign up for Part B during your Initial Enrollment Period.
A guaranteed Medigap right
When COBRA (or other employer coverage that pays after Medicare) ends, you may have a guaranteed issue right to buy certain Medigap policies. Apply within 63 days of the coverage ending.
Common questions
Not safely. COBRA doesn't protect you from the Part B late enrollment penalty, and it may pay only secondary to Medicare.
If it's creditable, it can protect you from the Part D penalty while you have it.
Want help with your own choices?
Every state runs a State Health Insurance Assistance Program (SHIP) with trained counselors who give free, unbiased Medicare help and do not sell plans. Find yours on our Medicare by state pages, or call Medicare at 1-800-MEDICARE (1-800-633-4227) (TTY 1-877-486-2048, 24 hours a day, 7 days a week).
Planning the rest of your coverage in retirement? We can help with life insurance later in life and final expense coverage.
Sources
- Working past 65, Medicare.gov. Checked September 29, 2026.
- When does Medicare coverage start?, Medicare.gov. Checked September 29, 2026.
- How Medicare Works with Other Insurance, Centers for Medicare & Medicaid Services. Checked September 29, 2026.
- Choosing a Medigap Policy (March 2026), Centers for Medicare & Medicaid Services. Checked September 29, 2026.
General information about the federal Medicare program, not advice about your situation. Figures are for 2026 unless stated and change every year; last reviewed September 29, 2026. Quote My Policy is a private company. Not connected with or endorsed by the United States government or the federal Medicare program.
Quote My Policy does not sell Medicare plans on this site. For plan-specific help, contact Medicare at 1-800-MEDICARE (1-800-633-4227) (TTY 1-877-486-2048, 24 hours a day, 7 days a week) or your State Health Insurance Assistance Program.