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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.”

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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

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  • Health Affairs Issue Focuses on Health Reform

    Perspective

    The June 2010 issue of the journal Health Affairs is dedicated to health reform, and "begins to tackle the hundreds of implementation issues inherent in health reform and offers prescriptions for averting trouble," according to Editor-in-Chief Susan Dentzer.

  • Kaiser Health Tracking Poll — June 2010

    Feature

    The start of summer finds Americans remain divided on the health reform law, but favorable views of the new law increased seven percentage points over the past month to 48 percent, compared to 41 percent who have “generally unfavorable” views and 10 percent who have yet to make up their minds.

  • New Report Provides State-Level Data on Coverage Gains and Costs of the Medicaid Expansion in Health Reform

    News Release

    Analysis Projects Steep Decreases in Uninsured, With Federal Government Covering Vast Majority of CostsWASHINGTON -- The expansion of Medicaid under the new health reform law will significantly increase the number of people covered by the program and markedly reduce the uninsured in states across the country, with the federal government picking up the overwhelming majority…

  • Pulling it Together: REPOR(t)

    Perspective

    In today’s column I investigate a somewhat lighter topic than my last column on micro-simulation modeling: What was the impact of shows like Jon Stewart’s The Daily Show and Stephen Colbert’s The Colbert Report on the health reform debate?  Who among us has not wondered about the answer to this question?  Please don’t answer that.

  • How Will Health Reform Impact Young Adults?

    Issue Brief

    Adults ages 19 to 29 have the highest uninsured rate of any age group in the United States. The 13.7 million uninsured people in this age group comprise nearly a third of the overall uninsured population.