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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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  • Data Note: 5 Misconceptions Surrounding the ACA

    Feature

    On the seventh anniversary of the passing of the Affordable Care Act, this Data Note highlights five of the most common misconceptions surrounding the 2010 health care law.

  • Restructuring Medicaid in the American Health Care Act: Five Key Considerations

    Issue Brief

    On March 9, the House Ways and Means Committee and Energy and Commerce Committee passed the American Health Care Act, the Republican leadership’s plan to repeal and replace the ACA. The Congressional Budget Office estimates that the House bill would reduce federal Medicaid spending by $880 billion over ten years by capping federal Medicaid spending and ending enhanced federal funding for Medicaid expansion adults. By 2026, federal Medicaid spending would be 25% lower than expected under current law, and 14 million fewer people would be covered by Medicaid than expected under current law. This brief considers five key Medicaid implications of the House bill.

  • Kaiser Health Tracking Poll: ACA, Replacement Plans, Women’s Health

    Feature

    The latest Kaiser Health Tracking Poll examines the public’s early attitudes towards the House Republican plan to repeal and replace the Affordable Care Act and finds that more expect the new plan will make things worse rather than better when it comes to the number of people with coverage and costs for those buying insurance on their own. The survey also measures public support for continuing current federal Medicaid funding to Planned Parenthood, gauges the importance of various ACA provisions for women’s and children’s health, and revisits the public's knowledge on key provisions included in the health care law.

  • Views of Governors and Insurance Commissioners on ACA Repeal and Changes to Medicaid: Responses to a Congressional Request for State Input on Health Reform

    Issue Brief

    This brief summarizes responses from governors and insurance commissioners in 35 states, including DC, to a request from members in the House of Representatives for state input on health care reforms. These responses provide insight into state leaders’ views on repeal and replacement of the ACA and the changes Congress is considering making to the financing and structure of Medicaid. It finds that respondents have mixed views on the ACA and potential repeal and replacement of the ACA; most respondents expressed cautions or concerns about repeal, which are shared among both Republicans and Democrats and those who oppose and support appeal; more respondents expressed concerns about capped Medicaid financing than indicated support, and those that expressed support included significant caveats; less than half of respondents, mostly Republican, cited interest in increased state Medicaid flexibility; over half of respondents supported returning authority to states to regulate insurance markets; and few respondents expressed interest in allowing the sale of insurance across state lines, HSAs, or high risk pools.

  • Data Note: Variation in Per Enrollee Medicaid Spending Across States

    Issue Brief

    Proposals to transition Medicaid a block grant or per capita cap would reduce federal spending. To understand per capita cap proposals, it is helpful to understand variation in per enrollee spending and per enrollee spending growth across states and enrollment groups. A per capita cap policy could lock in historic variation. This data note uses interactive maps and tables to show variation in per enrollee spending and spending growth by state and eligibility group.

  • Kaiser Health Tracking Poll: Future Directions for the ACA and Medicaid

    Feature

    This month’s Kaiser Health Tracking Poll explores the public’s views on the changing landscape of the U.S. health care system including proposals to repeal and replace the Affordable Care Act (ACA) and to change Medicaid financing to a system of block grants or per capita allotments. The survey also examines which sources, including news media and other sources, the public trusts for information on the proposed changes to the country’s health care system.

  • Kaiser Health Tracking Poll: August 2016

    Feature

    In advance of the 2016 presidential election, the August Kaiser Health Tracking Poll examines what health care issues voters would most like to hear the presidential candidates talk about during their campaigns and which candidate voters trust to do a better job of dealing with certain health care issues. In addition, the August Tracking Poll continues KFF’s analysis on attitudes related to the Zika virus outbreak as well as provides an update on attitudes towards electronic health records.

  • JAMA Forum: The Partisan Divide on Health Care

    Perspective

    In this post for JAMA, the Kaiser Family Foundation's Larry Levitt outlines the health care platforms of the Republican and Democratic parties, noting their fundamentally different aims and differing ideas about, among other things, the Affordable Care Act (also known as Obamacare) and Medicare.

  • Kaiser Health Tracking Poll: December 2015

    Feature

    The ACA’s third open enrollment will come to a close at the end of January and the December Kaiser Health Tracking Poll finds that only 7 percent of the uninsured correctly identify this as the deadline to enroll in coverage. With Democratic presidential candidates debating the idea of Medicare-for-all, which involves creating a national health plan in which all Americans would get their insurance through an expanded version of the Medicare program, most Democrats like the idea, but very few say the issue will drive their votes in the 2016 elections. As the U.S. Senate voted to repeal the Affordable Care Act (ACA) earlier this month, more of the public views the health care law unfavorably than favorably (46 percent vs. 40 percent). In addition, the public remains divided over what Congress should do next with the law, with 35 percent supporting repeal, 14 percent supporting scaling back the law, 18 percent who say they would like to see it implemented as is, and 22 percent who say they want the law expanded.