Health Insurance Open Enrollment 2027: Dates, Deadlines & What Changed

Posted on by Neal Shanske | Category: ACA Marketplace

Health insurance Open Enrollment for 2027 coverage begins November 1, 2026. For people who use HealthCare.gov, the current federal enrollment period runs through January 15, 2027.

There is an important earlier deadline, however: if you want Marketplace coverage to begin on January 1, you generally need to enroll or change plans by December 15, 2026. People who enroll from December 16 through January 15 will generally have coverage beginning February 1.

The dates deserve extra attention this year because earlier federal rules would have shortened the HealthCare.gov enrollment period to December 15. Current federal guidance instead lists January 15 as the final Open Enrollment deadline.

2027 Health Insurance Open Enrollment Dates

For states using the federal HealthCare.gov Marketplace, the key dates for 2027 coverage are:

Date What Happens
November 1, 2026 Open Enrollment begins for 2027 Marketplace coverage.
December 15, 2026 Last day to enroll in or change a plan for coverage beginning January 1, 2027.
January 1, 2027 Coverage begins for people who enrolled by December 15 and paid their first premium.
January 15, 2027 Open Enrollment ends on HealthCare.gov.
February 1, 2027 Coverage generally begins for people who enroll or change plans from December 16 through January 15.

You can confirm the latest federal dates directly on the HealthCare.gov enrollment calendar.

Is December 15 or January 15 the 2027 Deadline?

Both dates matter, but they mean different things.

December 15, 2026 is the deadline for January 1 coverage. If you want your new plan to be in effect at the beginning of 2027, do not wait until January.

January 15, 2027 is the end of Open Enrollment on HealthCare.gov. You can still enroll in or change a Marketplace plan between December 16 and January 15, but the new coverage will generally begin February 1.

This is particularly important because some older 2027 information online may still identify December 15 as the final federal enrollment deadline. HealthCare.gov currently states that Open Enrollment runs from November 1 through January 15.

Do All States Use the Same Open Enrollment Dates?

No. HealthCare.gov operates the Marketplace for many states, but a number of states run their own enrollment platforms. State-based Marketplaces may use different deadlines.

If your state sends you to its own Marketplace rather than HealthCare.gov, check that Marketplace directly before assuming January 15 is your final deadline. State enrollment periods have historically varied, and some states keep enrollment open later than the federal Marketplace.

Who Should Enroll During Open Enrollment?

Open Enrollment is primarily for people buying individual or family health insurance rather than receiving coverage through an employer, Medicare or another government program.

You should pay particular attention to Open Enrollment if you:

  • Are currently uninsured
  • Buy your own health insurance
  • Already have Marketplace coverage that you want to renew or replace
  • Expect your household income or family size to change in 2027
  • Recently became self-employed
  • Expect to lose employer-sponsored health insurance
  • Want to compare your current Marketplace plan with other 2027 choices

Even if you expect to keep the same plan, it is worth reviewing your options rather than relying blindly on automatic renewal. Premiums, provider networks, drug formularies, deductibles and subsidies can change from one year to the next.

What Changed for 2027 Marketplace Coverage?

Several changes make it especially important to review your eligibility and plan choices carefully for 2027.

The HealthCare.gov Deadline Is Currently January 15

A previously announced federal rule would have shortened the HealthCare.gov Open Enrollment period for 2027 so that it ended December 15. That change is not reflected in the current federal enrollment calendar. HealthCare.gov currently lists November 1 through January 15 as the 2027 Open Enrollment period.

The practical rule is simple: enroll by December 15 if you want January 1 coverage, but January 15 is currently the last day of federal Open Enrollment.

The Enhanced ACA Subsidies Have Expired

The temporary expansion of ACA premium tax credits that applied from 2021 through 2025 has ended under current law.

That means the older income cap has returned. In general, households with income above 400% of the federal poverty level are no longer eligible for the premium tax credit, while eligible households below that threshold may still receive substantial assistance.

This can produce very different premiums from what some households paid during the years of enhanced subsidies. Do not assume that your 2027 net premium will resemble what you paid in 2025.

The 150% of Poverty Year-Round Enrollment Opportunity Is Gone

In earlier years, some people with household income at or below 150% of the federal poverty level could qualify for a Special Enrollment Period throughout the year. That broad income-based enrollment opportunity is no longer available for 2027.

After Open Enrollment ends, most people will need a qualifying life event to enroll in or change Marketplace coverage.

How Do ACA Subsidies Work in 2027?

Marketplace premium tax credits are based largely on household income, household size, the cost of the benchmark plan in your area and whether you have access to other qualifying coverage.

For 2027, the IRS premium tax credit schedule generally applies to households with income from 100% through 400% of the federal poverty level, subject to the other eligibility requirements.

The amount you qualify for is based on your projected household income for the year. If your income changes during 2027, update your Marketplace application rather than waiting until tax time.

If the Marketplace pays too much advance premium tax credit on your behalf, you may have to reconcile that difference when you file your federal income tax return.

What If You Already Have Marketplace Insurance?

Do not assume automatic renewal means you should ignore Open Enrollment.

Before allowing an existing plan to renew, check:

  • Your 2027 monthly premium after subsidies
  • Your deductible and maximum out-of-pocket cost
  • Whether your doctors and hospitals remain in network
  • Whether prescription drugs you use remain covered
  • Copays and coinsurance for services you regularly use
  • Whether your income estimate and household information are still accurate

An insurer may change a plan substantially from one year to the next even if the plan name looks familiar.

What If Your Current Marketplace Plan Is Automatically Renewed?

HealthCare.gov may automatically re-enroll existing customers so they do not unexpectedly lose coverage at the end of the year.

Automatic renewal is a useful safety net, but it should not be treated as a recommendation that the same plan is still your best choice.

If you are automatically enrolled for January 1, you can still compare alternatives during Open Enrollment. HealthCare.gov currently allows plan changes through January 15, although a change made after December 15 will generally take effect February 1 rather than January 1.

What Information Should You Have Ready?

Before you begin a Marketplace application or renewal, gather the information you will need for everyone in your tax household.

That generally includes Social Security numbers or immigration documentation where applicable, expected 2027 household income, information about employer coverage available to household members, and details about your existing insurance.

Income deserves particular attention. Marketplace subsidies are generally based on your expected annual household income, not simply what you earned last month.

What If You Miss the January 15 Deadline?

After Open Enrollment ends, you generally cannot sign up for or freely change an ACA Marketplace plan until the next Open Enrollment period unless you qualify for a Special Enrollment Period.

Common qualifying events include losing other health coverage, getting married, having or adopting a child, and making certain permanent moves.

Most Special Enrollment Periods provide a limited window—often 60 days—so do not wait if you experience a qualifying event.

Medicaid and the Children’s Health Insurance Program are different. You can apply for Medicaid or CHIP throughout the year if you are eligible.

What If You Lose Employer Health Insurance During 2027?

Losing qualifying employer-sponsored coverage generally creates a Special Enrollment Period. You can often apply for Marketplace coverage before the employer plan actually ends, which can help prevent a gap in insurance.

If you are offered COBRA, compare it with Marketplace coverage before making a decision. COBRA lets you continue an employer plan, but the full premium can be expensive. Marketplace coverage may be less expensive if you qualify for a premium tax credit.

When Should You Actually Enroll?

If you know which plan you want, there is little advantage to waiting until the final hours of the enrollment period.

Enroll by December 15 if you want coverage beginning January 1. That avoids starting the year uninsured and gives you time to resolve application or payment problems before coverage is supposed to begin.

If you miss December 15, however, do not assume you have missed Open Enrollment entirely. Under the current HealthCare.gov schedule, you have through January 15, 2027 to enroll for coverage that generally starts February 1.

Before You Pick a 2027 Health Plan

The cheapest monthly premium is not necessarily the cheapest health insurance.

Compare the annual cost you could realistically face, including premiums, deductibles, copays, coinsurance and the maximum out-of-pocket limit. Check provider networks and prescription coverage before enrolling, especially if you have doctors, hospitals or medications you want to keep.

Finally, recalculate your subsidy using a realistic estimate of 2027 household income. The expiration of the enhanced premium tax credits means some households may see materially different financial assistance than they received in earlier years.

Bottom Line

For people enrolling through HealthCare.gov, Open Enrollment for 2027 coverage currently runs from November 1, 2026 through January 15, 2027.

The most important deadline is December 15 if you want coverage to begin January 1. If you enroll between December 16 and January 15, coverage generally begins February 1.

Do not rely on an old 2027 calendar that says federal Open Enrollment ends December 15. The current HealthCare.gov schedule gives consumers through January 15—but waiting until the last day still carries unnecessary risk.