Health Insurance Marketplace Enrollment Dates to Know From HealthCare.gov
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Quick answer: Health insurance marketplace enrollment dates run from November 1 to January 15, according to HealthCare.gov. Enroll or change plans by December 15 and your coverage can start January 1. Enroll from December 16 through January 15 and coverage starts February 1. Miss that window and you generally need a Special Enrollment Period.
I checked the HealthCare.gov pages directly. Every date below comes from them, and nothing here is a guess.
Medical and financial note: This is general education, not insurance or legal advice. Check HealthCare.gov for your own deadlines.
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A desk or wall calendar, so you can mark the December 15 and January 15 dates. Optional; it does not enroll you in anything.
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What is Open Enrollment?
Open Enrollment is the yearly window when you can enroll in, renew or change a Marketplace health plan. HealthCare.gov says it starts November 1 for the coming year.
The site currently says you can enroll for 2027 now. Coverage can start as soon as January 1.
What are the key dates?
HealthCare.gov lists five dates. Here they are in order:
- November 1: Open Enrollment starts.
- December 15: Last day to enroll or change plans for coverage that starts January 1.
- January 1: Coverage starts if you enrolled by December 15 and paid your first premium.
- January 15: Open Enrollment ends.
- February 1: Coverage starts if you enrolled December 16 through January 15 and paid your first premium.
Which deadline matters most?
It depends on when you want coverage to begin. If you want it January 1, aim for December 15.
If you enroll later, you still have time. HealthCare.gov says you can enroll through January 15, but coverage then starts February 1.
Do you have to pay before coverage starts?
Yes. The page says coverage starts January 1 or February 1 only if you also pay your first premium. Enrolling alone is not enough.
So don't wait until the last hour. Leave time to finish your application, pick a plan and pay.
What if you miss Open Enrollment?
You may still have options. HealthCare.gov says you can get coverage between January 16 and October 31 if you qualify for a Special Enrollment Period.
The site says a life event can qualify you. Examples it gives are losing other coverage, getting married or having a baby. It also mentions estimated household income.
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An accordion file folder, to keep your application papers in one place. Optional; it does not replace any official document.
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Is Medicaid or CHIP on a different schedule?
Yes. HealthCare.gov says you can apply for free or low-cost coverage through Medicaid and the Children's Health Insurance Program (CHIP) any time, all year. If you qualify, you can enroll immediately.
The deadlines above do not apply to those programs.
What should you do next?
HealthCare.gov suggests three things: preview plans and prices, sign up for email reminders, and download its checklist of what to gather before you apply.
Costs matter too. For related guides, see prescription discount programs and physical exam cost without insurance.
Turning 65? Medicare is a different program. See our guide to Medicare Advantage vs Original Medicare.
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A pack of sticky notes, for tracking your enrollment steps. Optional; it does not guarantee coverage.
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Frequently asked questions
When does health insurance marketplace enrollment start?
HealthCare.gov says Open Enrollment starts November 1. That is the first day you can enroll in, renew or change a Marketplace plan for the coming year.
When does Open Enrollment end?
It ends January 15. After that, you can enroll or change plans only if you qualify for a Special Enrollment Period.
What is the deadline for coverage that starts January 1?
December 15. You must also pay your first premium for coverage to start.
Can I get coverage after January 15?
Possibly. HealthCare.gov says you may qualify for a Special Enrollment Period due to a life event. You can apply for Medicaid or CHIP any time.
Do these dates apply in every state?
This guide covers HealthCare.gov only. I did not check dates for state-run marketplaces, so look up your state's site if you use one.
Sources
- HealthCare.gov: When can you get health insurance? healthcare.gov/quick-guide/dates-and-deadlines
- HealthCare.gov: Get or change coverage outside of Open Enrollment. healthcare.gov/coverage-outside-open-enrollment/your-options
Reviewed against the linked pages on November 1, 2026. Dates can change, so confirm them on HealthCare.gov before you act. This article is an editorial summary and interpretation, not insurance or legal advice.
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