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The ACA MarketplaceS

Change in February effectuated enrollment, by state, 2025-2026

How Has ACA Marketplace Enrollment Changed Across States in 2026?

ACA Marketplace enrollment fell this year in every state except New Mexico, which was the only state to fully replace the enhanced premium tax credits that expired last year with a state-funded subsidy, according to a new KFF analysis of effectuated enrollment data. The Marketplace enrollment decline—the first in seven years—follows several years of rapid enrollment growth and coincides with the end of the enhanced federal subsidies.

How Much and Why ACA Marketplace Premiums Are Going Up in 2027

ACA Marketplaces insurers are proposing a median premium increase of 15% in 2027, according to KFF’s updated analysis of 276 insurers with publicly available filings across all 50 states and the District of Columbia. This is the second consecutive year of double-digit premium hikes. Last year’s median nationwide proposed rate change was 18%, and the median finalized rate change was 20%. While this proposed rate change is lower than last year, it represents the second-highest requested rate change since 2018, as premium growth had been relatively flat in this market for several years.

About the ACA

Promotional image for KFF video How Affordable is the Affordable Care Act

Did the Affordable Care Act Make Health Care More Affordable?

The expiration of the ACA’s enhanced premium tax credits at the start of 2026, combined with rising insurer premiums, put a spotlight on health care affordability that extends beyond Marketplace enrollees. KFF’s Cynthia Cox examines the ACA’s record and the broader underlying question it raises: what’s a fair price for Americans people to pay for health care?

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  • The Health Reform Law’s Medicaid Expansion: A Guide to the Supreme Court Arguments

    Issue Brief

    One significant element of the pending U.S. Supreme Court case challenging the Affordable Care Act is the constitutionality of the law's Medicaid expansion. This provision of the law requires states that choose to participate in the Medicaid program to cover nearly all adults under age 65 with household incomes at or below 133% of the federal poverty level as of January 2014. A ruling on the Medicaid expansion could have far-reaching impacts on the present…

  • Firearms are the Leading Cause of Death for Children in the United States But Rank No Higher Than Fifth in Other Industrialized Nations

    News Release

    Firearms are now the number one cause of death for children in the United States, but rank no higher than fifth in 11 other large and wealthy countries, a new KFF analysis finds. Guns - including accidental deaths, suicides, and homicides - killed 4,357 children (ages 1-19 years old) in the United States in 2020, or roughly 5.6 per 100,000 children. In each of the peer countries, guns kill fewer children than motor vehicles, cancer,…

  • This chart shows how the prevalence of surprise bills varies by condition.

    Before New Ban, the Prevalence of Surprise Bills

    Feature

    Patients with certain conditions appear to be at higher risk for receiving surprise bills. They should be aware of new federal protections against surprise bills and know how to seek out help if they have improperly received one.

  • This chart shows that almost 1,300 hospitals have been penalized for high readmissions rates every year.

    10 Years of Hospital Readmissions Penalties

    Feature

    Over the 10-year lifetime of a Medicare program aimed at reducing hospital readmissions, 93% of eligible hospitals have been penalized at least once. Hospital readmissions have become less frequent, and most experts attribute that partly to the financial threat of the penalties, though other factors likely contributed to the improvements.

  • Report Provides Insights from Consumer Assisters on Improving Affordable Care Act’s Next Open Enrollment

    News Release

    A new report from the Kaiser Family Foundation and Robert Wood Johnson Foundation captures insights from those who helped consumers navigate the Affordable Care Act's first open enrollment period, including lessons for the second , which is set to start Nov. 15. “Taking Stock and Taking Steps: A Report from the Field after the First Year of Marketplace Consumer Assistance Under the ACA” draws on the experiences of 80 program leaders who participated in a…

  • Nine in Ten Uninsured Unaware that the Affordable Care Act’s Second Open Enrollment Period Starts in November

    News Release

    Most of Those Without Health Coverage Report Knowing Little or Nothing About the Insurance Marketplaces or About the Financial Assistance Available to Low- and Moderate-Income Families Broader Public Opinion on the Law Still Tilts Unfavorably, Though Gap Has Narrowed Since July and Returned to Pre-Rollout Levels With the second annual open enrollment period under the Affordable Care Act set to begin Nov. 15, the latest Kaiser Family Foundation tracking poll finds major gaps in the…

  • Medicaid: What to Watch in 2018 from the Administration, Congress, and the States

    Issue Brief

    Medicaid provides health insurance coverage for about one in five Americans and is the largest payer for long-term care services in the community and nursing homes. Efforts in 2017 to repeal and replace the Affordable Care Act (ACA) and cap federal financing for Medicaid were unsuccessful but help to set the stage for 2018. As 2018 begins, there is a focus on administrative actions using Medicaid Section 1115 demonstration waivers, state actions on Medicaid expansion,…

  • How Medicaid Section 1115 Waivers Are Evolving: Early Insights About What to Watch

    Issue Brief

    While efforts to pass major federal legislation to repeal and replace the Affordable Care Act (ACA) and restructure and reduce federal Medicaid financing may be on hold temporarily, the focus of the Centers for Medicare and Medicaid Services (CMS) and states is expected to turn to achieving significant Medicaid program changes through Section 1115 demonstration waivers. This issue brief presents three questions to help analyze the evolution of federal waiver policy as new waiver proposals…