Special Enrollment Period for Health Insurance: Qualifying Events and Deadlines

2026-09-30 • 8 min read

A special enrollment period lets you buy or change Marketplace health insurance outside open enrollment, usually within 60 days of a life event. Here are the events that qualify, the deadlines, and what to do if you miss them.

Quick Answer (as of 2026): A special enrollment period is a window outside open enrollment when you can buy or change Marketplace health insurance after a qualifying life event, such as losing job-based coverage, marriage, a birth or a move. For most events, HealthCare.gov gives you 60 days. Medicaid and CHIP loss gives 90 days.

Disclosure: This guide is general information, not legal or tax advice. Rules can differ in states that run their own Marketplace.

Open enrollment is not the only time you can get health insurance. A special enrollment period, or SEP, opens when your life changes in a way the rules recognize.

Miss the window and you usually wait for the next open enrollment. That makes the deadline the most important thing on this page.

When Is Open Enrollment for 2027, and What If I Miss It?

Open enrollment for 2027 coverage on HealthCare.gov runs November 1, 2026 through January 15, 2027, according to healthinsurance.org (August 2026). To have coverage start January 1, 2027, you must pick a plan by December 15, 2026.

A federal judge blocked a rule that would have shortened the window in June 2026. The government appealed, and oral arguments are set for late October 2026, per healthinsurance.org. The 2027 dates above still apply.

State-run Marketplaces set their own dates. Idaho ends December 15. California, the District of Columbia, New Jersey and New York end January 31. Massachusetts ends January 23. Rhode Island ends December 31 (healthinsurance.org, 2026).

If you miss open enrollment, you can still enroll, but only with a qualifying event. Employers planning their own enrollment season can read Summit's open enrollment guide for employers.

What Counts as a Qualifying Life Event for Special Enrollment?

A qualifying life event is a change in your household, home or coverage that HealthCare.gov recognizes. The main groups are below, per HealthCare.gov (2026).

Table: Common qualifying life events and how they work

Event	Examples	Coverage can start
Household change	Marriage, birth, adoption, foster placement, divorce with loss of coverage, death of a plan member	Marriage: first day of the next month. Birth or adoption: the day of the event
Move	New ZIP code or county, move to or from a U.S. territory or abroad, student or seasonal worker relocation	First of the month after you pick a plan, in most cases
Loss of coverage	Job-based plan or COBRA ends, plan discontinued, lose student plan eligibility, turn 26	First of the month after you pick a plan, in most cases
Employer offer	Offer of an individual coverage HRA or QSEHRA	Depends on the event date
Other	Citizenship, release from incarceration, natural disaster, tribal membership	Varies

Coverage start dates come from HealthCare.gov (2026) and healthinsurance.org (2026). In most cases, the earliest coverage can start is the first of the month after you finish enrolling.

How Long Do I Have to Enroll After a Qualifying Event?

Most events give you 60 days. The 60 days count from the date of the event, per HealthCare.gov (2026).

Loss of coverage works both ways. If you lose coverage involuntarily, you can enroll up to 60 days before the loss and up to 60 days after it (healthinsurance.org, 2026). Picking a plan before your old coverage ends can avoid a gap.

People who lose Medicaid or CHIP get 90 days, per HealthCare.gov (2026).

Write down the exact date of your event the day it happens. Then count 60 days forward on a calendar. That is your deadline.

Not sure your event qualifies, or when your 60 days end? A licensed professional can check your date and your county's plans in one short call. Check my enrollment window.

Does Losing Job-Based Health Insurance Qualify for a Special Enrollment Period?

Yes, if the loss is involuntary. Job-based coverage ending after a layoff, reduced hours or the end of a contract qualifies. Aging off a parent's plan at 26 also qualifies (HealthCare.gov, 2026).

Ending coverage yourself does not qualify. HealthCare.gov states that voluntarily dropping COBRA does not count, and neither does choosing to stop paying COBRA premiums.

You will need proof. HealthCare.gov says proof of the qualifying event is still required for a loss of coverage SEP, and you have 30 days after picking a plan to send documents (HealthCare.gov and healthinsurance.org, 2026). A letter from your employer showing the coverage end date is the usual proof.

If you are weighing COBRA against a Marketplace plan, Summit's COBRA alternatives guide compares the two, and the COBRA health insurance guide explains the election deadlines.

What Happens If I Move to a New State or County?

Moving to a new ZIP code or county that changes which plans you can buy qualifies you for an SEP, per HealthCare.gov (2026). Students who relocate to the school's location and seasonal workers who move for work also qualify.

Pick a plan by the last day of the month and coverage in most cases starts the first day of the next month. Plans, prices and networks change by county, so compare before you choose.

What Happens After I Pick a Plan?

Here is the usual order of steps.

Write down the date of your event and count 60 days (90 for Medicaid or CHIP loss).
Gather proof, such as a coverage end letter, marriage certificate or lease.
Apply on HealthCare.gov or your state Marketplace and choose your qualifying event.
Pick a plan. Note the coverage start date shown.
Upload documents within 30 days if the Marketplace asks for them.
Pay your first premium so coverage starts.

Skipping step 5 can delay your coverage, per HealthCare.gov (2026).

Who Can Help Me Choose a Plan Inside My Special Enrollment Window?

A licensed insurance professional can confirm your event qualifies, count your deadline and compare plans in your county. Summit Health Benefits connects you with a licensed professional to do this.

You get a real answer to three questions: does my event qualify, when does my window close, and which plans keep my doctors. Premium costs are also changing, so check current numbers in Summit's 2027 premium increase by state tracker.

Some readers prefer a different route. The individuals and families page shows a membership option that sits alongside insurance, not as a replacement. It is not insurance and does not count as ACA minimum essential coverage. You can see plan details on the individuals and families page.

Check Your Special Enrollment Deadline With a Licensed Professional

A licensed professional will confirm whether your life event qualifies, count your 60 days, and line up plans in your county before your window closes.

Check My Enrollment Window

Frequently Asked Questions

What is a special enrollment period for health insurance?

A special enrollment period is a window outside open enrollment when you can enroll in or change a Marketplace health plan after a qualifying life event. Most events give you 60 days, per HealthCare.gov (2026).

How many days do I have for a special enrollment period?

Most special enrollment periods last 60 days from the event. Loss of Medicaid or CHIP gives 90 days. For involuntary loss of coverage, you can also enroll up to 60 days before the loss, per HealthCare.gov and healthinsurance.org (2026).

When is open enrollment for health insurance 2027?

Open enrollment for 2027 on HealthCare.gov runs November 1, 2026 through January 15, 2027. Pick a plan by December 15, 2026 for coverage starting January 1, 2027, per healthinsurance.org (August 2026). Some state Marketplaces use different end dates.

What qualifies as a life event for a special enrollment period?

Qualifying events include marriage, birth, adoption, divorce with loss of coverage, a move to a new ZIP code or county, and involuntary loss of job-based coverage. Turning 26 and losing Medicaid or CHIP also qualify, per HealthCare.gov (2026).

Can I get a special enrollment period if I quit my job?

Quitting a job does not by itself create an SEP. Losing job-based coverage can qualify when the loss is involuntary. HealthCare.gov states that choosing to drop COBRA or stop paying COBRA premiums does not qualify.

Do I need proof to use a special enrollment period?

Often yes. HealthCare.gov says you have 30 days after picking a plan to send documents that confirm your qualifying event. Sending them quickly helps prevent a delay in your coverage start.

When does coverage start after a special enrollment period?

It depends on the event. For a birth or adoption, coverage can start on the day of the event. For marriage, coverage can start the first day of the next month. In most other cases, the earliest start is the first of the month after you enroll, per HealthCare.gov and healthinsurance.org (2026).

Sources

HealthCare.gov, Getting health coverage outside Open Enrollment (2026); HealthCare.gov, Send documents to confirm why you are eligible for a Special Enrollment Period (2026); healthinsurance.org, Special Enrollment Period 2026 Guide (May 2026); healthinsurance.org, What are the deadlines for the ACA's open enrollment period (August 2026).