How COBRA and Medicare fit together.
When a former employee or family member is also eligible for Medicare, the order of events decides whether COBRA can end, how long it lasts and who pays first. The timing rules are specific.
What the rules say.
Entitled Is Not Eligible
A person becomes entitled to Medicare on the effective date of enrollment in Part A or Part B, whichever is earlier. Being eligible to enroll is not enough. A person who is only old enough to enroll, or who has not yet signed up, has not become entitled in this sense. Ask the individual for the actual Part A or Part B effective date. For a quick estimate, use our free Medicare Part B late enrollment penalty calculator.
Medicare Before The COBRA Election
If a person first becomes entitled to Medicare on or before the date COBRA is elected, that Medicare entitlement cannot be used to end the person’s COBRA coverage. In that case, the plan generally cannot use the Medicare date as a reason to end COBRA. Keep the dates in the file, and ask counsel if the facts are unclear or the person’s timeline is unusual. See also COBRA Premium Tax Treatment for the premium cap and tax rules.
Medicare After The COBRA Election
If a person first becomes entitled to Medicare after electing COBRA, the plan may end that person’s COBRA coverage on the date of Medicare entitlement. Coverage for other qualified beneficiaries continues. This is a plan option, not an automatic result, so it depends on what your plan document says. Check the document and, if you plan to end coverage, confirm the steps and notice with counsel first.
Employee Enrolls Before A Qualifying Event
The Department of Labor says COBRA is still available after a later qualifying event, even if the employee was already enrolled in Medicare. Dependents may get up to 36 months from the date the employee became entitled to Medicare, or 18 months from the loss of coverage, whichever is later.
What plan sponsors can do.
Record Medicare Dates
Ask for the Medicare effective date when a qualified beneficiary reports enrolling, and keep it with the COBRA file. A simple note with the date, the source of the information, and who recorded it makes later questions much easier to answer. Do it at the time the person reports, not months later.
Check The Plan Terms
The plan may end COBRA at Medicare entitlement only as the plan document and the rules allow. Confirm your document says so. If the document is silent or unclear, ask your benefits counsel or administrator before acting. Plan terms, and not general practice, usually decide what the plan may do for your group.
Do Not Treat It As A Second Event Automatically
The IRS has said an employee’s Medicare entitlement is not a second qualifying event unless it would have caused a loss of coverage under the plan. Apply that test. Because this is a legal test that depends on the plan’s terms and the facts, document how you applied it. If a case is not clear, ask benefits counsel to review the situation.
Point People To Neutral Help
Medicare timing can affect Part B enrollment and penalties. State health insurance assistance programs offer free counseling. Employers should not give personal advice on whether someone should enroll in Medicare or when. Pointing people to neutral counseling helps them make an informed choice with their own situation in mind.
Three questions to settle.
When Did Medicare Start
The effective date of Part A or Part B controls the analysis. Ask the person for a copy of their Medicare card or confirmation letter if they are willing to share it. The date printed there is often clearer than a verbal answer about when coverage began.
When Was COBRA Elected
Compare the election date to the Medicare date. Your COBRA file should show when the election was made, not only when the notice was sent. If the order of the dates is unclear, resolve that before any decision about ending coverage.
Who Pays First
Medicare is generally primary once a person is enrolled in both, and COBRA pays second. Confirm with the plan. Which plan pays first can depend on the circumstances, such as the type of Medicare entitlement. Ask the COBRA administrator or counsel to confirm coordination before telling the person what to expect.
Common Questions About COBRA And Medicare
Can we end COBRA when someone turns 65?
Not by age alone. The rule turns on Medicare entitlement and when it occurs compared with the COBRA election.
Does Medicare entitlement end COBRA for the whole family?
No. It affects the person who becomes entitled. Other qualified beneficiaries can continue.
Is employee Medicare entitlement a second qualifying event?
Only when it would have resulted in a loss of coverage for the qualified beneficiary under the plan. The IRS has issued a ruling on this.
Which pays first, COBRA or Medicare?
The CMS COBRA job aid says Medicare generally pays first and COBRA pays second for someone enrolled in both.
Why does this matter for the former employee?
Choices about COBRA, Part B and Medigap can affect each other and can lead to penalties. Neutral counseling is available.
Is this legal advice?
No. For a specific situation, involve your counsel or COBRA administrator. We can help you organize the facts and questions.
Send us your renewal.
We’ll tell you whether it looks competitive, where we see opportunity, and the five questions we’d put to your carrier. No cost, and no obligation to move anything.
The renewal letter
Your current plan summary
Contribution split by tier
Enrolled counts by tier
Four documents — two more if your group is 50 or more. Nothing else; every extra one is a reason to postpone.
Laws and rules referenced
29 U.S.C. § 1163 — COBRA qualifying events, such as termination, reduced hours, death, divorce or Medicare entitlement.
42 U.S.C. § 1395y(b)(1) and 42 C.F.R. § 411.172 — Medicare pays second to a group health plan for working aged employees of employers with 20 or more employees.
42 U.S.C. § 1395p — Medicare Part B enrollment periods.
42 C.F.R. § 408.22 — Part B premium increase of 10% for each full 12 months of delayed enrollment.
This page is general information, not legal or tax advice. Rules change and facts matter, so confirm your situation with counsel or a qualified advisor.
An independent employee benefits consulting firm. We look at the entire benefits program: cost, plan performance, risk and administration.
Switch to CFH. Unhappy with your broker? Your employees won’t notice. You will. →
Cookies on This Site
We use cookies to keep the site working properly and to understand how it is used. You can decline anything that is not essential. See our Privacy Policy for the detail.
- Essential: needed for the site to load and for you to move around it. These cannot be switched off.
- Analytics: tell us which pages get read, so we know what is worth writing more of.
- Advertising: set by third parties such as ad and social platforms to measure and target campaigns.