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Affordable Care Act

The ACA Marketplace

2025 KFF Marketplace Enrollees Survey

In 2025, about one in three ACA enrollees said they would be “very likely” to look for a lower-premium Marketplace plan If their premium payments doubled.

Cost Concerns and Coverage Changes: A Follow-Up Survey of ACA Marketplace Enrollees

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 10 who specifically say their premiums are “a lot higher.”

new and noteworthy
POLLING

Tracking the Public’s Views on the ACA

While overall opinion of the Affordable Care Act has been more favorable than unfavorable since 2017, there remain deep partisan divides. See how public opinion on the ACA has changed from the inception of the law to the present. This interactive tool highlights key moments when views shifted and trends based on party identification, income, age, gender, and race/ethnicity.
DATA

Marketplace Enrollment is Down in 2026—But All of the Data Isn’t in Yet

ANALYSIS

Higher Premium Payments or Higher Deductibles: The ACA's Tradeoffs

QUIZ

Test Your Knowledge of the Affordable Care Act

ANALYSIS

Competition Increased in Individual Market But Fell in Fully Insured Group Markets

Timely insights and analysis from KFF staff

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  • Medicaid and Children’s Health Insurance Program Provisions in the New Health Reform Law

    Issue Brief

    This brief compares the Medicaid and Children's Health Insurance Program provisions in the new health reform law with pre-reform law governing those programs. The analysis focuses on Medicaid coverage and financing changes; how Medicaid and CHIP will interface with a new health insurance exchange and other Medicaid benefits and access changes.

  • Health Reform: Implications for Women’s Access to Coverage and Care

    Issue Brief

    This issue brief, Health Reform: Implications for Women's Access to Coverage and Care, reviews how the Affordable Care Act is expected to affect access to care and affordability of health coverage for women. It also explains the provisions in the health reform law related to preventive screening services, reproductive health, maternity care and women on Medicare. The brief includes national and state-level estimates of the percentage of uninsured women ages 18-64 who are likely to qualify for federal help under the law and a summary of key coverage and benefits provisions in the health reform law that affect women.

  • Liking the Pieces, Not the Package: Contradictions in Public Opinion During Health Reform

    Poll Finding

    Public opinion played a prominent role during the recent health care reform debate. In a published Health Affairs article, Kaiser researchers examine past and present polling and show that opinion tracked with historic patterns and was relatively stable, even if the contentious public debate suggested a volatile public mood in 2009 and 2010.

  • Small Area Variations and the ACA’s Coverage Expansions

    From Drew Altman

    A new Kaiser analysis sheds light on how the country might react to the Affordable Care Act (ACA) when it is implemented.  It looks at how the benefits of the ACA's coverage expansions will vary around the country by census areas (technically, Public Use Microdata Areas, or PUMAs).

  • Kaiser Health Tracking Poll – June 2009

    Poll Finding

    The June Kaiser Health Tracking Poll finds remarkable stability in public opinion on health reform as Congressional committees begin to hone in on the details of their health reform bills and debate intensifies.