Side-by-Side Comparison
| Feature | Open Enrollment | Special Enrollment Period |
|---|---|---|
When | Once per year (Nov 1 – Jan 15 for ACA marketplace) | Any time a qualifying life event occurs |
Who qualifies | Everyone | Only people who experience a qualifying life event |
Duration | ~2.5 months (marketplace) or 2–4 weeks (employer) | Typically 60 days from the qualifying event |
What you can do | Enroll, switch plans, drop coverage | Enroll or switch plans (varies by event type) |
Proof required | None | Documentation of qualifying life event (marriage cert, birth cert, termination letter, etc.) |
Plan options | All available plans | All available plans (same as OE) |
Coverage start | Jan 1 (if enrolled by Dec 15) or Feb 1 | Typically 1st of month following enrollment |
What Qualifies You for a Special Enrollment Period?
Coverage changes
Losing existing health coverage (job loss, COBRA expiration, aging off a parent's plan at 26, losing Medicaid/CHIP eligibility).
Family changes
Getting married or divorced, having or adopting a baby, placing a child for foster care, death of a covered family member.
Location changes
Moving to a new state or county, moving to/from the US, students moving for school.
Income changes
Income changes affecting subsidy eligibility, gaining or losing eligibility for Medicaid/CHIP,
Other
Gaining citizenship or lawful presence, leaving incarceration, AmeriCorps members, errors by the marketplace or plan.
Documentation
You'll need to verify your qualifying event. Common documents:
Termination letter or COBRA notice
Marriage/divorce certificate
Birth certificate or adoption papers
Lease or utility bill showing new address
Income documentation
The marketplace may verify automatically through data matching or request documents within 30 days.
Learn more: Special Enrollment Periods and Qualifying Life Events →
How ICHRA Gives You More Enrollment Flexibility
One of ICHRA's underappreciated advantages: it creates additional enrollment flexibility beyond the standard OE and SEP windows. When an employer offers ICHRA, being offered ICHRA itself can trigger a Special Enrollment Period for marketplace plans. New hires can enroll at any time — not just during open enrollment. Employees who already have individual coverage can start receiving ICHRA reimbursement without changing plans. With Thatch, the enrollment process is guided and automated regardless of when it happens — OE season or mid-year.
See how Thatch handles enrollment year-round
Open Enrollment vs Special Enrollment FAQ
Can I get health insurance outside of open enrollment?
Yes, if you experience a qualifying life event within the past 60 days. Common triggers include job loss, marriage, having a baby, or moving to a new state. If your employer offers ICHRA, being offered ICHRA may itself qualify you for a Special Enrollment Period.
How long does a Special Enrollment Period last?
Most SEPs last 60 days from the qualifying event. For Medicaid/CHIP loss, you get 90 days. Don't wait — enroll as soon as possible to avoid a gap in coverage.
Do I need proof of a qualifying life event?
Yes. The marketplace may verify your qualifying event through data matching or request documentation within 30 days. Have your supporting documents ready (termination letter, marriage certificate, etc.).
Is losing a job a qualifying life event?
Yes. Losing employer-sponsored health coverage due to job loss, reduction in hours, or employer plan termination qualifies you for a 60-day Special Enrollment Period. Voluntary resignation also counts — it's the loss of coverage that matters, not the reason.
Can my employer start ICHRA outside of open enrollment?
ICHRA can be offered starting on the first day of any month. When an employer newly offers ICHRA, eligible employees receive a Special Enrollment Period to enroll in marketplace coverage. Thatch coordinates the timing to ensure no coverage gaps.
