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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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  • Health Insurance Explained: The YouToons Have it Covered

    Video

    In this five-minute animated video, the YouToons help consumers understand their health insurance through fun, easy-to-understand explanations and scenarios. This cartoon serves as a tutorial for consumers and organizations. The YouToons previously appeared in the 2010 animated movie, "Health Reform Hits Main Street" and the 2013, "The YouToons Get Ready for Obamacare: Health Insurance Changes Coming Your Way Under the Affordable Care Act."

  • More Than Four in Ten Uninsured Don’t Know Basic Health Insurance Terms, Fewer Understand Complex Coverage Concepts

    News Release

    Kaiser Family Foundation Provides Consumer Resources to Fill Knowledge Gaps as the Second Open Enrollment Period Nears for the Affordable Care Act’s Marketplaces With open enrollment for the Affordable Care Act’s health insurance marketplaces days away, findings from a new Kaiser Family Foundation survey suggest that some people who stand to benefit from the law…

  • Mapping Marketplace Enrollment

    Interactive

    This interactive zip code tool and map displays enrollment in the Health Insurance Marketplaces as a share of the potential market in small geographic areas across the country.

  • Key Findings on Medicaid Managed Care: Highlights from the Medicaid Managed Care Market Tracker

    Report

    This report highlights 10 key findings on the Medicaid managed care market, based on analysis of data included in the Kaiser Family Foundation's Medicaid Managed Care Market Tracker. The findings provide a partial profile of the Medicaid MCO market nationally and by state. They also illuminate the involvement of large, multi-state health insurance companies in the Medicaid market and the participation of these firms in other markets as well, including the managed long-term services and supports market, the new ACA marketplaces, and the Medicare Advantage market. Finally, these selected highlights serve to illustrate the array of ways the Tracker can be used to understand more about the Medicaid managed care market and its place in the broader market.

  • Assessing the Performance of the U.S. Health System

    Issue Brief

    Health spending growth has consistently outpaced U.S. economic growth and is higher than medical spending in other wealthy countries. Despite spending more, the United States doesn't have better health outcome in terms of life expectancy, mortality rates and other measures. This brief provides an overview of trends in health costs and the performance of the U.S. health system, including comparisons to countries from the Organisation for Economic Co-operation and Development (OECD). The brief charts growth in the nation's per capita health spending along with the recent slowdown, touching on the roles of expanded Medicaid eligibility, increases in Medicare beneficiaries and the Affordable Care Act (ACA). Additionally, it discusses the health system's effectiveness and capacity to provide services, including the accessibility and affordability of care.

  • 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.