A TRUSTED INDEPENDENT HEALTH INSURANCE GUIDE SINCE 1999.
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A TRUSTED INDEPENDENT HEALTH INSURANCE GUIDE SINCE 1999.
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Do I have to repay excess premium tax credits?
If you received advance premium tax credits (APTC) for health insurance you purchased last year, and your income ended up increasing, you might have to pay back some of your APTC. Learn how to determine whether you will have to repay excess APTC when you file taxes.

What are the deadlines for the ACA’s open enrollment period?

Open enrollment has ended everywhere except DC, where it continues through February 4

ACA open enrollment 2026 deadlines by state


What was the deadline to enroll in 2026 ACA-compliant health insurance coverage in the individual market?

In most states, open enrollment for individual/family health coverage for 2026 ended on January 15, 2026, although it ended in December 2025 in Idaho, and there are several states where it continued until January 31, 2026. As of early February, open enrollment had ended everywhere except Washington DC, where it had been extended through February 4, 2026.1

And although open enrollment has ended in Connecticut, people who are eligible for Connecticut's new state-funded subsidies have a special enrollment period that began February 1, 2026.2


How is the open enrollment schedule changing for 2027 coverage?

Starting in the fall of 2026, open enrollment will be shorter and will end on December 15 in many states. And all plans selected during open enrollment will take effect on January 1, as there will no longer be an option for a February 1 start date without a special enrollment period. State-run exchanges will have the option to extend their enrollment period later than December 15, but not later than December 31.3

But for coverage effective in 2026, the open enrollment period followed the same schedule that had been used for the last few years, with most states running open enrollment from November 1 through January 15. Now that open enrollment has ended, a person will need to qualify for a special enrollment period to enroll in coverage with a 2026 effective date. This is true for both on-exchange and off-exchange individual market coverage. (Note that most special enrollment periods require that the person already had minimum essential coverage before the qualifying life event.)4

What states had a January 15 open enrollment deadline for 2026 health insurance?

In 40 states, the deadline to enroll in individual/family health coverage for 2026 was January 15, 2026. Most of these states use HealthCare.gov and thus do not have the discretion to set their enrollment dates. But 10 of the 21 state-run exchange platforms used the same enrollment schedule:

What states did not have a January 15 deadline to enroll in 2026 health insurance?

Fully state-run exchanges (there are 21 of them for the 2026 plan year) have some flexibility in terms of the enrollment deadlines they set. About half of these state-run exchanges used a November 1 - January 15 open enrollment schedule for 2026 coverage. However, 11 of the state-run exchanges had different enrollment windows. Here are the enrollment deadlines used by the rest of the state-run exchanges for 2026 coverage:


Who can enroll in ACA-compliant health plans year-round?

Year-round enrollment is available for some populations and for some types of health coverage, without a need for a specific qualifying life event. This includes:

  • Outside of ACA's open enrollment window, enrollment is only available with a special enrollment period

    After open enrollment ends, people can normally only purchase coverage if they have a special enrollment period (SEP). Most SEPs are triggered by a specific qualifying event such as:

    • Marriage (since 2017, this generally only applies if at least one spouse already had coverage before the wedding, although there are some exceptions),
    • Becoming a U.S. citizen,
    • Birth or adoption,
    • Involuntary loss of other health coverage.
    • A permanent move to an area where new health plans are available (since July 2016, this only applies in most cases if you already had coverage prior to your move).
    • Here’s a complete guide to qualifying events in the individual market, and their associated special enrollment periods. Note that in most cases, special enrollment periods can be used to obtain replacement coverage, but not to go from being uninsured to insured. But some qualifying life events, such as the birth of a baby, will allow a household to obtain new coverage even if they weren't previously insured.

    Regardless of whether you purchase insurance through the exchange or off-exchange, the annual open enrollment window applies, and special enrollment periods are necessary to enroll at any other time of the year.

    Open enrollment schedule has varied over time

    In the federally-run marketplaces, the following enrollment windows have been used (with some last-minute extensions, and with somewhat different schedules used by the state-run marketplaces):

    • 2014 coverage: October 1, 2013 through March 31, 2014
    • 2015 coverage: November 15, 2014 through February 15, 2015
    • 2016 coverage: November 1, 2015 through January 31, 2016
    • 2017 coverage: November 1, 2016 through January 31, 2017
    • 2018 coverage: November 1, 2017 through December 15, 2017
    • 2019 coverage: November 1, 2018 through December 15, 2018
    • 2020 coverage: November 1, 2019 through December 15, 2019
    • 2021 coverage: November 1, 2020 through December 15, 2020
    • 2022 coverage: November 1, 2021 through January 15, 2022
    • 2023 coverage: November 1, 2022 through January 15, 2023
    • 2024 coverage: November 1, 2023 through January 16, 2024 (one-day extension due to a federal holiday)
    • 2025 coverage: November 1, 2024 through January 15, 2025
    • 2026 coverage: November 1, 2025 through January 15, 2026
    • 2027 coverage: November 1, 2026 through December 15, 202618

    Louise Norris is an individual health insurance broker who has been writing about health insurance and health reform since 2006. She has written hundreds of opinions and educational pieces about the Affordable Care Act for healthinsurance.org.

    Footnotes

    1. "Open Enrollment & Payment Deadlines" DC Health Link. Accessed Feb. 2, 2026  
    2. "Access Health CT to Offer Special Enrollment Period for Eligible Customers to Enroll in Coverage with New State Subsidy" Access Health CT. Jan. 23, 2026  
    3. "Patient Protection and Affordable Care Act; Marketplace Integrity and Affordability" Federal Register, U.S. Department of Health & Human Services. June 25, 2025 
    4. "Title 45 § 155.420 Special enrollment periods" Code of Federal Regulations. Accessed Jan. 18, 2026 
    5. "Deadline to Enroll in Health and Dental Coverage Through Access Health CT Has Been Extended to Jan. 31" Accessed Health CT. Jan. 2, 2026 
    6. "How to Enroll" Your Health Idaho. Accessed Oct. 18, 2025 
    7. "Important Dates" Massachusetts Health Connector. Accessed Oct. 18, 2025 
    8. "Get Covered Illinois announcement" Jan. 12, 2026 
    9. "When Can I Buy Health Insurance?" Get Covered NJ. Accessed Oct. 18, 2025 
    10. "Open Enrollment and Renewals for the 2026 Plan Year" NY State of Health. Sep. 24, 2025 
    11. "Pennie social media post" Instagram. Jan. 3, 2026 
    12. "Open Enrollment" HealthSourceRI. Accessed Oct. 18, 2025 
    13. "Plan Year 2026 Updates" Virginia Health Insurance Marketplace. Accessed Oct. 18, 2025 
    14. "Eligibility Changes to the Medicaid Program Effective January 1, 2026" DC Department of Health Care Finance. Nov. 11, 2025 
    15. "Special Enrollment Period" Massachusetts Health Connector. Accessed Jan. 18, 2026 
    16. "Covered Connecticut Program" CT.gov. Accessed Jan. 18, 2026 
    17. "Medicaid and CHIP coverage" HealthCare.gov. Accessed Jan. 18, 2026 
    18. "Patient Protection and Affordable Care Act; Marketplace Integrity and Affordability" Federal Register, U.S. Department of Health & Human Services. June 25, 2025 

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