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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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  • At Tax Time, No Public Backlash Over Obamacare’s Individual Mandate

    News Release

    As tax season closes, Drew Altman looks at why the ACA’s individual mandate and tax credit reconciliation process “passed their first major hurdles this tax season with no significant public backlash,” in his latest column for The Wall Street Journal's Think Tank.

  • Evolving Picture of Nine Safety-Net Hospitals: Implications of the ACA and Other Strategies

    Issue Brief

    Safety-net hospitals are an integral part of the U.S. health care landscape, providing care to some of the nation’s most medically vulnerable populations, including Medicaid enrollees and the uninsured. With the implementation of the Affordable Care Act (ACA), the U.S. health care system is rapidly changing, and safety-net hospitals need to make major adjustments to survive in the post-reform environment. This brief draws on interviews with executives at nine safety-net hospital systems and examines how their hospitals have fared since major coverage provisions of the ACA came into effect in January 2014. The brief also examines new and ongoing strategies that the hospitals are adopting in the face of a quickly changing health care environment. While acknowledging the importance of the ACA, executives at each system in the study noted that other non-ACA related factors have also shaped how their hospitals fared over the last year. The hospitals in the study were: Cook County Health and Hospital System (CCHHS); Denver Health (Denver Health); Harris Health System (Harris Health); New York City Health and Hospitals Corporation (HHC); Parkland Health and Hospital System (Parkland); Santa Clara Valley Health and Hospital System (SCVHHS); San Francisco General Hospital (SFGH); University Medical Center of Southern Nevada (UMC), and Virginia Commonwealth University Health System (VCU). These hospitals participated in two earlier related studies that examined how the systems were preparing for health care reform.

  • How Are Hospitals Faring Under the Affordable Care Act? Early Experiences from Ascension Health

    Issue Brief

    Expanded health insurance coverage through the Affordable Care Act (ACA) is having a major impact on many of the nation’s hospitals through increases in the demand for care, increased patient revenues, and lower uncompensated care costs for the uninsured. This report examines the early experiences with the ACA by Ascension Health, the delivery subsidiary of the nation’s largest not-for-profit health system, Ascension. It finds that, overall, Ascension hospitals in Medicaid expansion states saw increased Medicaid discharges, increased Medicaid revenue, and decreased cost of care for the poor, while hospitals in non-expansion states saw a very small increase in Medicaid discharges, a decline in Medicaid revenue, and growth in cost of care to the poor.

  • Minimum Contraceptive Coverage Requirements Clarified by HHS Guidance

    Issue Brief

    New HHS clarification on ACA contraceptive coverage requirement specifies that insurance plans must cover at no cost to women all of the 18 contraceptive methods approved by the FDA.  If a provider recommends a specific option or product, plans must cover it at no cost as well.

  • Medicaid Enrollment: An Overview of the CMS April 2014 Update

    Fact Sheet

    CMS recently released its latest update on Medicaid and CHIP enrollment data, covering the period through April 2014. This fact sheet provides a brief overview of the latest data and what it suggests about the impact of the ACA on Medicaid and CHIP enrollment, providing historical trends for context

  • Potential Supreme Court Decision: Who Will Bear the Coverage “Burdens?”

    Issue Brief

    The Supreme Court is expected to reach a decision by the end of June, 2014 on the cases brought forth by Hobby Lobby and Conestoga Wood Specialties, two for profit corporations challenging the ACA’s contraceptive coverage requirement. The plaintiffs contend that the requirement that they include coverage for certain contraceptive services (emergency contraceptive pills and intrauterine devices) in the insurance plans “substantially burdens” both the corporation’s and the owners’ religious rights. During the arguments, several of the justices discussed the extent to which the corporations did or not did not have a choice in offering coverage to their workers. In this brief, we explore some of the factors influencing coverage decisions and possible consequences for women and employers given possible Supreme Court decision options: either upholding the contraceptive coverage requirement, or in favor of Hobby Lobby.

  • Advancing Opportunities, Assessing Challenges: Key Themes from a Roundtable Discussion of Health Care and Health Equity in the South

    Issue Brief

    This brief summarizes the primary themes expressed by participants of a roundtable discussion of current and future opportunities and challenges for advancing health care and health equity in the South organized by Kaiser Family Foundation’s Commission on Medicaid and the Uninsured and the Satcher Health Leadership Institute at Morehouse School of Medicine in Atlanta, Georgia.

  • Does the Affordable Care Act Cover the Uninsured?

    From Drew Altman

    Drew Altman, in The Wall Street Journal's Think Tank, discusses what a new Foundation survey finds about one of the biggest questions about the Affordable Care Act: whether it covers the uninsured.