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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

Timely insights and analysis from KFF staff

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  • Survey of Non-Group Health Insurance Enrollees, Wave 3

    Poll Finding

    The survey, conducted shortly after the close of the Affordable Care Act’s third open enrollment period, is the third in a series exploring the experiences of individuals who purchase their own health insurance in the nongroup market, including coverage purchased both inside and outside the ACA’s marketplaces. It examines enrollees’ satisfaction with their health plans’ premiums, deductibles, and provider networks, their views on affordability, shopping experiences, and problems encountered with their plans.

  • Kaiser Health Tracking Poll: Health Care Priorities for 2017

    Feature

    The most recent Kaiser Health Tracking Poll finds that health care is among the top issues, with the economy and jobs and immigration, Americans want President-elect Donald Trump and the next Congress to address in 2017. As Congressional lawmakers make plans for the future of the Affordable Care Act, the latest survey finds the public is divided on what they would like lawmakers to do when it comes to the 2010 health care law with…

  • Interactive Maps: Estimates of Enrollment in ACA Marketplaces and Medicaid Expansion

    Interactive

    As the 115th U.S. Congress deliberates the future of the Affordable Care Act, also known as Obamacare, an interactive map from the Kaiser Family Foundation provides estimates of the number of people in each congressional district who enrolled in a 2017 ACA marketplace health plan and the political party of each district’s representative as of October 2017. The analysis also includes maps charting the total number of people enrolled under the ACA Medicaid expansion in…

  • Comparison of Medicare Provisions in Recent Bills and Proposals to Repeal and Replace the Affordable Care Act

    Issue Brief

    Repealing and replacing the Affordable Care Act is a top priority of the Trump Administration and the Republican leadership, which could have implications for the Medicare program. This brief provides a side-by-side comparison of the Medicare-related provisions in six bills and proposals that would repeal the ACA, excluding proposals that would not directly affect Medicare.

  • Community Health Centers: Recent Growth and the Role of the ACA

    Issue Brief

    This brief draws on federal data and our 2016 survey of health centers to provide a 2015 profile of health centers, analyze recent changes in patient coverage and service capacity, and compare health centers in Medicaid expansion and non-expansion states. It also considers the implications of a repeal of the ACA for health centers and the low-income communities they serve.

  • Private Contracts Between Doctors and Their Medicare Patients:  Current Law, Proposed Changes and Implications for Beneficiaries

    News Release

    Under current law, physicians may choose to privately contract with their Medicare patients, though very few do.  Under such arrangements, doctors can charge their Medicare patients any amount they determine is appropriate for their services rather than be bound to Medicare’s set fees and balance billing limits, so long as the patients agree, and the contract complies with requirements in current law designed to protect consumers. Some Republicans in Congress have proposed to ease restrictions…

  • Current Flexibility in Medicaid: An Overview of Federal Standards and State Options

    Issue Brief

    The Trump Administration and new Congress have indicated that they will seek to cap Medicaid financing through a block grant or per capita cap, reduce federal funding for the program, and offer states increased flexibility to manage their programs within this more limited financing structure. The size of the federal reductions as well as which federal program standards would remain in place and what increased flexibility might be provided to states under such proposals would…

  • The Republican Health-care Plan the Country Isn’t Debating

    From Drew Altman

    In this Washington Post op-ed, Drew Altman discusses how Republicans' ideas to change Medicaid and Medicare and repeal the Affordable Care Act would fundamentally change the federal role in health, calling it: the biggest change in health we are NOT debating.