What’s the deadline to get coverage during Obamacare’s open enrollment period?

Obamacare open enrollment deadlines

Obamacare open enrollment guide

Our updated Insider’s Guide to Obamacare’s Open Enrollment offers time-saving strategies for selecting coverage during open enrollment. (Click the image for the latest edition.)

Q. What is the deadline to enroll in health insurance coverage in the individual market?

A.  Open enrollment for 2018 coverage was much shorter than the enrollment window was in previous years, and the shorter enrollment window will continue to be used in future years, in nearly every state.

In most states, open enrollment began November 1, and ends December 15, with all plans effective January 1 of the coming year. There is no longer an option to switch to a different plan after the first of the year (state-run exchanges have some flexibility on enrollment schedules, and several are offering longer enrollment periods, described below).

Outside of open enrollment, plan changes and new enrollments are only possible for people who experience a qualifying event.


California has enacted legislation that permanently establishes different enrollment dates within the state, both on and off-exchange. From now on, open enrollment in California will begin on October 15, and end on January 15. So for 2019 coverage, California residents were able to enroll starting on October 15, 2018, and will have until January 15, 2019 to enroll. California residents who enroll after December 15 will have coverage effective February 1 instead of January 1.


Colorado’s Division of Insurance has also permanently extended open enrollment. State regulators published draft regulations in August 2018 calling for an annual special enrollment period, running from December 16 to January 15, that will be added to the end of open enrollment each year. The regulations were finalized in November 2018, so open enrollment in Colorado will effectively last 2.5 months for all future enrollment periods (November 1 to January 15). Enrollments completed between December 16 and January 15 will have coverage effective February 1.

Rhode Island

Health Source RI has confirmed that open enrollment for 2019 plans would run from November 1, 2018 to December 31, 2018. This two-month enrollment window is the same schedule that Rhode Island used for 2018 coverage. The only insurer in Rhode Island that sells off-exchange coverage is Blue Cross Blue Shield of Rhode Island, and they’ve aligned their off-exchange open enrollment period with the exchange’s dates.

In Rhode Island, consumers have until December 23 to select a plan with a January 1 effective date (in most states, even where the end of open enrollment has been extended, the deadline to get a plan with a January effective date is December 15, so Rhode Island gives people an extra week).


Minnesota’s health insurance exchange, MNsure, announced an enrollment extension for 2019 coverage. Open enrollment for 2019 plans will run from November 1, 2018 through January 13, 2019.

But people need to enroll by December 15 in order to have coverage effective in January. Enrollments completed between December 16 and January 15 will have coverage effective February 1, while enrollments completed in the second half of January won’t take effect until March.


Open enrollment for 2019 individual market plans in Massachusetts runs from November 1, 2018 to January 23, 2019. Plans selected between December 24 and January 23 will be effective February 1, as Massachusetts (like Rhode Island) always gives enrollees until the 23rd of the month to select a plan with coverage effective the first of the following month.

District of Columbia

The exchange board in DC voted unanimously to add a special enrollment period to the upcoming open enrollment period for 2019 coverage. So open enrollment in DC will begin November 1, 2018, and will continue until January 31, 2019. DC residents who enroll between December 16 and January 15 will have coverage effective February 1, while those who enroll in the second half of January will have coverage effective March 1

New York

New York State of Health announced in October that open enrollment for 2019 coverage would run from November 1, 2018 to January 31, 2019. This is the same extension schedule that New York used for 2018 coverage. The extension is also in keeping with the exchange’s “fast facts” sheet, which was updated in September 2018, and noted that open enrollment is “usually” November through January.

Enrollments have to be completed by December 15 for a January effective date. Enrollments completed between December 16 and January 15 will have coverage effective in February, while enrollments completed after January 15 will take effect in March.

Other state-run exchanges are following the Nov 1 – Dec 15 schedule

There are a total of 12 state-run exchanges that operate their own enrollment platforms. They are the only ones with the ability to extend open enrollment, and most of them have chosen to do so in past years. Seven of them have extended open enrollment for 2019 coverage (and in some cases, for future years as well), but what about the others?

The remaining five exchanges that use their own enrollment platforms are following the November 1 – December 15 schedule that HealthCare.gov is using:

  • Idaho already transitioned to the shorter enrollment period last year.
  • Vermont also already transitioned to the shorter enrollment period last year.
  • Connecticut: Open enrollment was extended by one week for 2018 coverage, but the exchange tweeted in September 2018 that open enrollment for 2019 coverage would be one week shorter than it had been the prior year, indicating that it will end on December 15 this year. And as of December 10, that was still the case — no extension had been announced, and enrollment was still scheduled to end on December 15.
  • Washington’s exchange tweeted in mid-September that open enrollment would run from November 1 to December 15. As of December 10, they were still following that schedule.
  • Maryland’s exchange website still says that open enrollment will end on December 15. But the one-week extension that was allowed at the end of open enrollment in December 2017 in Maryland was only announced two days before open enrollment had been scheduled to end.

Open enrollment schedules: A history

For 2014 coverage, when the bulk of the ACA’s provisions were first being implemented, open enrollment lasted six months (October 1, 2013 to March 31, 2014), in an effort to give everyone enough time to get used to the new system and enroll.

For 2015, 2016, and 2017 coverage, open enrollment lasted for three months. Open enrollment for 2018 coverage was scheduled to follow the same three-month time frame that the past two open enrollments used (November through January). But in April 2017, HHS finalized a market stabilization rule that included a variety of changes ostensibly aimed at protecting the stability of the individual health insurance market.

One of the changes made by the new rule was the open enrollment schedule for 2018 coverage. It was reduced to half of what was previously scheduled, although it’s worth noting that the November 1 — December 15 schedule was already slated to take effect in the fall of 2018 (for 2019 coverage). The market stabilization rule just moved it up a year. However, the Trump Administration also drastically reduced funding for outreach, marketing, and enrollment assistance for HealthCare.gov, which is the exchange used by the majority of the states. This was certainly not what the previous administration had in mind when they scheduled the transition to a shorter open enrollment period. If anything, the shorter enrollment period requires more funding, not less.

The open enrollment window applies in the exchanges, and it also applies to plans purchased outside the exchange—with the exception of Nevada. (In Nevada, off-exchange plans—with no subsidies—can be purchased year-round, but the carriers can impose a three-month waiting period before coverage takes effect.)

State-run exchanges have some flexibility on open enrollment schedule

The 2017 market stabilization rule noted that the November 1 — December 15 open enrollment period would apply in every state in the fall of 2017. However, they also noted that some state-based exchanges — there are 12 of them — might experience logistical difficulties in getting their systems ready for the new schedule on a fairly tight timeframe.

As such, the market stabilization rule clarified that state-based exchanges could use their own flexibility to “supplement the open enrollment period with a special enrollment period, as a transitional measure, to account for those operational difficulties.” Ten of the 12 state-based exchanges that use their own enrollment platform ultimately opted to extend open enrollment for 2018 (only Idaho and Vermont kept the December 15, 2017 end date).

As we can see from California’s decision to enact legislation on this issue, and the DC exchange board’s decision to extend the upcoming open enrollment through January 31, 2019, states with their own enrollment platforms still have flexibility going forward. HHS has defined open enrollment as the window from November 1 to December 15, and that applies in every state. But state-run exchanges have the option to offer special enrollment periods before or after that window, in order to effectively extend open enrollment (California’s legislation adds a special enrollment period before and after the federally-set open enrollment period; DC is adding a special enrollment period after the end of the regular open enrollment period).

Outside of the open enrollment window, enrollment is only available with a qualifying event

After open enrollment ends, people can only purchase coverage if they have a special enrollment period triggered by a 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 (this allows people to select a new plan in the first two months of the year if their insurer leaves the market at the end of the previous year; see details below).
  • 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 full list of qualifying events and their associated special enrollment periods.

Regardless of whether you purchase insurance through the exchange or off-exchange, the annual open enrollment window applies, and special enrollment periods are necessary in order to enroll at any other time of the year. Nevada is an exception – coverage is available there outside the exchange year-round, albeit without subsidies and with a 90-day waiting period before coverage becomes effective.

In 2016, HHS tightened up the rules regarding eligibility for special enrollment periods, and they further tightened the rules in 2017, as part of the market stabilization rule. As a result, the rules are being followed much more closely than they were in previous years, and in most states, anyone enrolling during a special enrollment period is required to provide proof of the qualifying event that they experienced

Native Americans and Alaska Natives can enroll year-round.  Applicants who are eligible for Medicaid can also enroll year-round.

Special rule for loss of coverage

If your health plan is terminated on December 31 for reasons other than non-payment of premium or fraud, you are eligible for a special enrollment period, as loss of coverage is a qualifying event. In order to take advantage of this provision, you’ll need to check the box on the application that says you’re enrolling because you lost coverage.

Here’s more about how the loss of coverage qualifying event works.

People who have on-exchange coverage with an insurer that leaves the market are mapped to plans with different insurers if they don’t return to the exchange to pick a new plan by December 15. But in most states, they’re still eligible for a special enrollment period (which continues for 60 days after the old plan ends) during which they can return to the exchange and pick a different plan.

People who have off-exchange coverage with an insurer that leaves the market are generally uninsured as of January 1 if they don’t pick a new plan for themselves by December 31, as there’s no entity available to automatically select a new plan for them. But the same special enrollment period applies to off-exchange enrollees — they have 60 days after the old plan ends to sign up for a new plan (albeit with a gap in coverage if they don’t sign up by December 31, as the earliest available effective date after that point is February 1).

In 2017 and 2018, numerous insurers exited the exchanges, leaving many people having to pick new plans. But for 2019, we’re seeing the opposite trend, with insurers joining the exchanges in many states (as of late June, insurers had filed plans to join the exchanges in Arizona, Florida, Iowa, Maine, Michigan, Missouri, New Mexico, North Carolina, Oklahoma, Tennessee, and Virginia). There are some shrinking coverage areas in some places — which will result in some people in the old coverage areas having to pick new plans — but even that is the exception to the rule for 2019. So there are likely to be significantly fewer people losing their coverage at the end of 2018.

Limited enrollment windows are normal and necessary when coverage doesn’t depend on your medical history

We frequently see people lamenting the fact that there’s a limited window in which to purchase coverage, but there are a couple points to keep in mind:

  • Limited open enrollment periods have long been the norm for employer-sponsored health insurance, which is where most non-elderly Americans get their coverage (you can’t just enroll in your employer’s plan anytime you like; you have to wait for open enrollment, unless you have a qualifying event).
  • Medicare also has limited annual open enrollment periods.
  • The individual health insurance market used to allow people to purchase coverage anytime they wanted. But the insurance company would ask a long list of medical history questions, and would decline applications from people with serious pre-existing conditions. That’s no longer the case, so the limited enrollment window is necessary to prevent people from waiting until they’re sick to enroll (which would be unsustainable, since insurance only works if there are enough healthy people paying premiums to offset the costs of the sick people).

Shorter open enrollment is controversial

The reason the Obama Administration had planned to shorten open enrollment (the Trump Administration moved this up a year, implementing it in the fall of 2017 instead of 2018) was to ensure that as many people as possible are enrolled in coverage for the full year. In the past, open enrollment continued throughout January (or even later, in the case of the initial open enrollment periods), which meant that people could sign up near the end of open enrollment and get a plan that took effect in March.

The idea behind the new schedule is that everyone has coverage that starts in January, making people more likely to pay for a full year of coverage. The new schedule also removes the ability for people to “game the system” by signing up in November for an expensive plan, utilizing it for a planned expense (a surgery, for example) in January, and then switching to a lower-cost plan with an effective date in February or March. It also eliminates the adverse selection that would otherwise occur when people don’t plan to enroll but then find out in late December or January that they’re in need of health care.

But on the other side of the coin, there has been considerable concern among consumer advocates, brokers, and other enrollment assisters who worry that six weeks just isn’t enough time to help everyone get enrolled. The new open enrollment period mostly overlaps with open enrollment for Medicare Advantage and Medicare Part D, and many of the brokers who help people enroll in individual market plans are also helping people enroll in Medicare during the same time, stretching their resources.

There have also been concerns that the shorter open enrollment period might mean that fewer young, healthy people will enroll in individual market coverage. Sick people tend to enroll as soon as open enrollment begins, so they’ll enroll regardless of the schedule. But young, healthy people — the people who are needed in order to keep the risk pools stable — are more likely to procrastinate and enroll at the last minute. The shorter open enrollment period might mean that they just don’t enroll at all, with total enrollment ending up lower than it would have been with the longer enrollment period.

But despite the shorter enrollment period and the funding cuts that the Trump Administration made for marketing and enrollment assistance, enrollment in plans for 2018 was only slightly lower than it had been the year before. Almost 11.8 million people enrolled in exchange plans for 2018, versus about 12.2 million for 2017.

That will likely drop considerably for 2019, however, when the individual mandate penalty is eliminated. People who are uninsured in 2018 are still subject to a penalty, which will be collected on 2018 tax returns. But that will not be the case for people who are uninsured in 2019, and the Congressional Budget Office projects that 3 million fewer people will obtain coverage in the individual market in 2019 as a result.

In addition, the Trump Administration has finalized rules that expand access to short-term health insurance plans and has also finalized a rule that expands access to association health plans. Both types of coverage will be more likely to appeal to healthy people, which could result in fewer people signing up for ACA-compliant health plans during open enrollment for 2019 coverage.

Louise Norris is an individual health insurance broker who has been writing about health insurance and health reform since 2006. She has written dozens of opinions and educational pieces about the Affordable Care Act for healthinsurance.org. Her state health exchange updates are regularly cited by media who cover health reform and by other health insurance experts.

Find affordable health plans

Since 2008, we’ve helped more than 16 million people.

(Step 1 of 2)

Related terms

open enrollment

Related articles