The 60-day window, exactly as the Marketplace defines it
You can come to the Marketplace up to 60 days before you lose job-based coverage, or within 60 days after. If you enroll by the last day of the month you lose coverage, new coverage can start the first day of the next month.
- 60 days before the loss, or 60 days after -- a 120-day total window
- Coverage can start the 1st of the month after you enroll
- Documentation of the coverage loss may be required
- Voluntarily stopping COBRA payments does not qualify
This rule is federal and does not vary by state
The 60-day Special Enrollment Period rule for losing job-based coverage comes from federal Marketplace rules and applies the same way in every state, including states that run their own exchange. What can vary by state is which exchange you apply through.