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The ACA MarketplaceS

How Has Marketplace Enrollment Changed Across States in 2026?

Following several years of rapid enrollment growth in the ACA Marketplaces that corresponded with temporary enhanced premium tax credits, enrollment fell for the first time in seven years in 2026, when those tax credits expired. Every state except for New Mexico saw a drop in Marketplace enrollment from 2025 to 2026. State-based Marketplaces that run their own enrollment platforms, including those that partially offset the enhanced tax credits, generally saw lower drops in enrollment.

About the ACA

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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 Potential Side Effects of Halbig

    Perspective

    The Halbig case, if it prevails, would have far-reaching side effects on the Affordable Care Act’s employer mandate and the functioning of the individual insurance market.

  • Drew Altman: Amid Tensions, Legal Immigrants Fear Signing Up for Obamacare

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman discusses new Kaiser Family Foundation survey findings about how fear of enforcement of immigration laws may be affecting Latino enrollment in the Affordable Care Act. All previous columns by Drew Altman are available online. 

  • Amid Tensions, Legal Immigrants Fear Signing Up for Obamacare

    From Drew Altman

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman discusses new Kaiser Family Foundation survey findings about how fear of enforcement of immigration laws may be affecting Latino enrollment in the Affordable Care Act.

  • Survey Finds Approximately 3.4 Million Previously Uninsured Adult Californians Obtained Coverage Since Start of the Affordable Care Act’s First Open Enrollment Period

    News Release

    Immigration Status and Fears Pose Challenges to Further Expanding Coverage Among Hispanics Affordability Key Obstacle to Enrollment for Those Who Remain Uninsured MENLO PARK, Calif. -- Nearly six in 10 (58%) previously uninsured Californians report getting health insurance since last summer, finds the second wave of the Kaiser Family Foundation's Longitudinal Panel Survey following the experiences of a randomly selected  panel of uninsured Californians under the Affordable Care Act (ACA). Based on official estimates of…

  • Where are California’s Uninsured Now? Wave 2 of the Kaiser Family Foundation California Longitudinal Panel Survey

    Report

    This second wave of the Kaiser Family Foundation's California uninsured survey assesses the impact of the Affordable Care Act to date on state residents who were uninsured prior to open enrollment. The results capture the share of previously uninsured Californians who gained coverage or remained uninsured, how they feel about and interact with their new coverage options and what barriers to getting insurance remain. The report examines breakouts by race, coverage type, and other demographic…

  • Web Briefing: What Worked, What’s Next? Strategies in Four States Leading ACA Enrollment Efforts

    Event Date:
    Event

    On Monday, July 28, the Kaiser Family Foundation held an interactive web briefing to examine the experiences and lessons of four states -- Colorado, Connecticut, Kentucky, and Washington -- that each established state-based Marketplaces, expanded their Medicaid programs, and successfully enrolled eligible individuals into Medicaid and Marketplace coverage under the ACA.  The briefing drew upon a new issue brief released today by the Foundation’s Kaiser Commission on Medicaid and the Uninsured (KCMU), What Worked and…

  • The Stakes Beyond the Halbig Lawsuit

    From Drew Altman

    In a column for The Wall Street Journal’s Think Tank, Drew Altman discusses if the legal court cases about whether the government can provide tax credits to people in the Affordable Care Act’s federal health exchanges will be perceived by the American people as a legitimate legal question or as more inside-Washington politics.

  • How Obamacare’s Progress Makes Expanding Coverage Harder

    From Drew Altman

    This was published as a Wall Street Journal Think Tank column on July 21, 2014. The Affordable Care Act’s success meeting its initial enrollment goals and the repair of HealthCare.gov seem to have calmed the political waters for Obamacare. But the job of enrolling the uninsured gets harder, not easier, because the remaining uninsured will generally be tougher to reach. Recent surveys show, roughly in line with expectations, that 8 million to 9.5 million fewer adults are uninsured compared with last year before…

  • The Impact of the Children’s Health Insurance Program (CHIP): What Does the Research Tell Us?

    Issue Brief

    The Children’s Health Insurance Program (CHIP) was established in 1997 to provide coverage for uninsured children who are low-income but above the threshold for Medicaid eligibility. In 2009, and again in the Affordable Care Act (ACA), Congress extended federal funding for CHIP, but funding will expire a little over a year from now. Decisions about CHIP’s future funding will be consequential as more than 8 million low-income children were covered by CHIP at some point…