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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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  • If the Affordable Care Act is Struck Down, Nearly All Americans Would Be Affected in Some Way

    News Release

    The Affordable Care Act’s changes to the nation’s health care system are so widespread that nearly all Americans would be affected in some way if a federal judge’s decision ruling the entire law unconstitutional is upheld, according to a new analysis from KFF (the Kaiser Family Foundation). While the changes to the individual insurance market – including protections for people with pre-existing conditions, creation of insurance marketplaces, and premium subsidies for low and modest income…

  • KFF Health Tracking Poll – January 2019: The Public On Next Steps For The ACA And Proposals To Expand Coverage

    Feature

    This month's KFF Health Tracking Poll finds that about four in ten are aware of the federal judge's ruling that the ACA is no longer valid but once made aware, most disapprove of the ruling. This poll also examines the public's favorability toward expanding the role of public health care programs, and majorities across partisan groups have a favorable opinion of programs such as Medicare buy-in and Medicaid buy-in, with a national Medicare-for-all being less…

  • The Affordable Care Act’s Impact on Medicaid Eligibility, Enrollment, and Benefits for People with Disabilities

    Issue Brief

    Medicaid is an important source of health insurance coverage for people with disabilities. This issue brief explains how Medicaid eligibility and benefits for people with disabilities are affected by the Affordable Care Act (ACA) rules as of 2014. Marketplace rules are discussed to the extent that they relate to Medicaid eligibility determinations for people with disabilities.

  • Retiree Health Benefits At the Crossroads

    Report

    This issue brief reviews recent trends and developments in employer-sponsored retiree health coverage and examines the impact of recent legislation, such as the Medicare drug benefit and the Affordable Care Act (ACA) on retiree health coverage. The report describes leading strategies employers have been pursuing or considering to limit costs for retiree health benefits. In addition, the report considers the potential implications of proposals aimed at reducing federal spending for retiree health coverage and costs.

  • Health Coverage and Care in the South in 2014 and Beyond

    Issue Brief

    This issue brief provides an overview of health coverage and care in the South today, with a focus on demographics, the impact of the ACA coverage expansions, and ongoing efforts to improve the delivery system and safety net in the South.

  • Health Coverage and Care in the South: A Chartbook

    Report

    The South has faced longstanding disparities in health and health care, although significant variation exists between southern states. As a group, compared to those in other regions, Southerners are more likely to be uninsured, less likely to have access to needed health services, and more likely to experience a number of chronic health conditions. This chartbook provides key data on the demographic and economic characteristics of the southern population as well as their health status,…

  • How is the ACA Impacting Medicaid Enrollment?

    Issue Brief

    This issue brief provides an overview of new Medicaid enrollment data released by Centers for Medicare and Medicaid Services and its interpretation to assess the influence of the ACA on Medicaid enrollment.

  • Measuring Changes in Insurance Coverage Under the Affordable Care Act

    Issue Brief

    This data note discusses the details and timing of some of the private and federal surveys that will be used to look at how coverage has changed due to the Affordable Care Act. Different surveys offer different information and insight into coverage under the ACA, and we discuss the contributions and challenges in each type of effort.

  • Kaiser Health Tracking Poll: April 2014

    Feature

    Despite the news that 8 million people have signed up for health insurance through the ACA’s new marketplaces, the April Kaiser Health Tracking Poll finds no change in overall opinion of the law since last month . The most common reason for remaining uninsured is not being able to find an affordable plan. Also, a majority of the public supports the ACA’s requirement that private health insurance plans cover the full cost of birth control…