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Affordable Care Act

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 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.

  • Share of Americans With An Unfavorable View of the Affordable Care Act Rises in July; Majority Continues To Want Congress To Improve, Not Repeal, The Law

    News Release

    A Quarter Incorrectly Believes Newly Insured Under ACA Were Enrolled in a Single Government Plan Majority of the Public Believes the Hobby Lobby Decision Will Trigger New Efforts to Deny Health Coverage On Religious Grounds After remaining steady for several months, the share of Americans expressing an unfavorable view of the Affordable Care Act rose to 53 percent in July, up eight percentage points from June, according to the latest Kaiser Health Tracking Poll. The…

  • A Closer Look at the Courts’ Impact on Health Policy

    From Drew Altman

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman maps what the combined impact of the Supreme Court decision on the Affordable Care Act’s Medicaid expansion and a plaintiff’s win in Halbig would look like and discusses the impact of court decisions on health policy.

  • One Year into Duals Demo Enrollment: Early Expectations Meet Reality

    Perspective

    One year into initial enrollment in the Medicare-Medicaid financial alignment demonstrations for dual eligible beneficiaries, some initial insights are beginning to emerge. This policy insight highlights key challenges and trends emerging in states’ demonstrations.

  • How Obamacare Is Doing Better But Feeling Worse

    From Drew Altman

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman explains why even as there are recent positive indicators of the Affordable Care Act’s performance and impact, public opinion about the law has not changed since passage of the law.

  • The Politics of Obamacare: How the Affordable Care Act is Playing in the Midterm Elections

    Event Date:
    Event

    In 2010, many political analysts and journalists cited the debate over, and enactment of, the Affordable Care Act (often called "Obamacare") as one factor that helped spark the conservative Tea Party movement and the Republican takeover of the House in that year's Midterm Elections. Four years later, the law's major coverage provisions have taken effect, resulting in new health coverage for millions of Americans, but public opinion on the law remains deeply divided along partisan…

  • Sen. Mark Pryor Spotlights the Health Law’s Rx for Pre-Existing Illnesses

    From Drew Altman

    In a column for The Wall Street Journal’s Think Tank, Drew Altman explains why Senator Mark Pryor’s new campaign ad features the Affordable Care Act’s protections for people with pre-existing medical conditions, the somewhat forgotten “mega provision” of the law.

  • Health Reform and Medicare: Overview of Key Provisions Tutorial

    Interactive

    This tutorial was produced for kaiserEDU.org, a Kaiser Family Foundation website that ceased production in September 2013. The kaiserEDU.org tutorials are no longer being updated but have been made available on kff.org due to demand by professors who are using the tutorials in class assignments. You may search for other tutorials to view on kff.org. To download this or other tutorials, visit the tutorials archive page.  Slides are available for download using the "Download Slides" link within the…

  • Health Reform: How Will Medicaid Change? Tutorial

    Interactive

    This tutorial was produced for kaiserEDU.org, a Kaiser Family Foundation website that ceased production in September 2013. The kaiserEDU.org tutorials are no longer being updated but have been made available on kff.org due to demand by professors who are using the tutorials in class assignments. You may search for other tutorials to view on kff.org. To download this or other tutorials, visit the tutorials archive page.  Slides are available for download using the "Download Slides" link within the…