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Medicare question

How long is my Special Enrollment Period after losing employer coverage?

After losing employer health coverage, you generally have 8 months to sign up for Medicare Part B without a late penalty. This is called a Special Enrollment Period.

Last updated: August 17, 2026

Where this answer comes from, and what it can't tell you

Written from the published Medicare rules and the source material preserved for this question. It explains the topic in general terms. It is not a reading of your own coverage documents, not a prediction of how Medicare or a plan will decide a case, and not advice about a particular plan. Your current notice, policy, Evidence of Coverage, or formulary controls when it differs from a general explanation. Resting Sycamore is not Medicare.gov and is not endorsed by any government agency.

What determines the answer to “How long is my Special Enrollment Period after losing employer coverage”?

After losing employer health coverage, you generally have 8 months to sign up for Medicare Part B without a late penalty. This is called a Special Enrollment Period.

Which details can change the answer to “How long is my Special Enrollment Period after losing employer coverage”?

When Part B was delayed because of group health coverage based on current employment, the Special Enrollment Period ends 8 months after the employment or coverage ends, whichever happens first. COBRA and retiree coverage do not extend that period. Part B coverage generally begins the first month after you sign up, so waiting can create a gap. If the period is missed, the General Enrollment Period runs from January 1 through March 31, and coverage begins the month after enrollment. A late enrollment penalty may apply. Confirm the dates with Social Security because other coverage situations follow different rules.

For you, this means 8 months sounds like plenty of time, but acting sooner rather than later protects you from coverage gaps and a penalty that would follow you for as long as you have Medicare.

What should you verify before acting on “How long is my Special Enrollment Period after losing employer coverage”?

Confirm the effective date, notice deadline, and whether a Special Enrollment Period applies before changing coverage. The controlling notice or enrollment record matters more than a general example.

Where should you look next?

All Medicare questionsBrowse the current question library by topic.Interactive Medicare toolsWork through dates, costs, and coverage details with the available calculators.Medicare doctor recordsCheck the provider and prescribing records currently published on Resting Sycamore.

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