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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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  • Claims Denials and Appeals in ACA Marketplace Plans in 2021

    Issue Brief

    This analysis of HealthCare.gov Marketplace insurers' transparency data finds that 17% of in-network claims were denied in 2021, with denial rates varying widely across insurers. Consumers appealed less than two-tenths of 1% of denied in-network claims.

  • Poll: Public Views “Big Beautiful Bill” Unfavorably by Nearly a 2-1 Margin; Democrats, Independents and Non-MAGA Republicans Oppose It, While MAGA Supporters Favor It

    News Release

    Medicaid Work Requirements Are Generally Popular, But Arguments Can Shift Views Nearly two-thirds (64%) of the public holds unfavorable views of the “One Big Beautiful Bill” passed last month by the House, nearly twice the share who view the bill favorably (35%), a new KFF Health Tracking Poll finds. The budget reconciliation bill that includes tax and budget cuts – much of which affect health care – is viewed unfavorably by large majorities of Democrats…

  • ACA Marketplace Survey Feature Image - Website

    KFF Follow-Up Survey of Marketplace Enrollees: Following End of Enhanced Credits, Half of Marketplace Enrollees Now Say Costs Are a Lot Higher, Most Expect to Cut Back on Basic Household Expenses to Afford Coverage

    News Release

    Following the expiration of the enhanced premium tax credits for people with Affordable Care Act (ACA) Marketplace plans, a new KFF follow-up survey of the same Marketplace enrollees KFF surveyed in 2025 finds half (51%) of returning enrollees say their health care costs are “a lot higher” this year compared to last year, including four in ten who specifically say their premiums are “a lot higher.”

  • A Note on How the War in Iran May Affect Health Care in the Midterms

    From Drew Altman

    In a new column, Dr. Drew Altman, KFF’s President and CEO, discusses the impact of the war in Iran and rising gas prices on voter concerns about health care costs. He writes: “Recently, we saw health care costs rise to the top of the public’s list of economic worries, ahead of food, housing, utility costs and the cost of gas….Expect gas prices to rise and health care costs to fall on the list of affordability…

  • Costs, Coverage, and Enrollment Changes: Exploring Current Public Opinion and Policy on the ACA Marketplaces

    Event Date:
    Event

    Following the expiration of the enhanced premium tax credits at the end of 2025, many Americans enrolled in the ACA Marketplaces have faced higher health care costs and reconsidered their coverage options given affordability concerns. To learn more, join KFF public opinion and policy experts for a virtual event focused on the key issues facing ACA Marketplace enrollees and policy considerations, particularly as health care cost and coverage issues rise to the top of voters’…

  • Children and Health Care Reform: Assuring Coverage That Meets Their Health Care Needs

    Issue Brief

    This issue brief examines the health care needs and health costs of children and analyzes the specific health care needs of two children in particular, including one with serious health challenges. The findings have implications for the health reform debate as policymakers consider minimum standards for coverage, required cost sharing amounts and limits on covered benefits in health plans. Issue Brief (.pdf)

  • What’s in There? An Ask-the-Experts Overview of the Health Reform Law

    Event Date:
    Event

    The Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act of 2010 are now law. But many people have questions about the new reforms. To answer questions about the major provisions of these two laws, the Alliance for Health Reform and The Commonwealth Fund sponsored an April 16 briefing. For more information, please visit Alliance's event page. Full Video   Speakers for this session: The panel is co-moderated by Karen…

  • Pathways to Payment Innovation in a Post-Health Reform Era

    Event Date:
    Event

    The new health reform law contains a number of changes in the way health care is paid for, particularly in public programs such as Medicare and Medicaid. The Alliance for Health Reform and The Commonwealth Fund sponsored a May 10 briefing which explored topics such as how some health care providers will be paid differently under reform, what effect this might have on payments across the health care system, and how providers are reacting. For…

  • Summary of Key Changes to Medicare in 2010 Health Reform Law   

    Issue Brief

    Summary of Key Changes to Medicare in 2010 Health Reform Law . This brief provides a detailed look at the improvements in Medicare benefits, changes to payments for providers and Medicare Advantage plans, various demonstration projects and other Medicare provisions in the law. It includes a timeline of key dates for implementing the Medicare-related provisions in the law.