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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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  • Which Path for Health-Care Politics in 2015?

    News Release

    In his first 2015 column for The Wall Street Journal's Think Tank, Drew Altman explains why this year, status quo for the Affordable Care Act is not an option and how the Supreme Court rules in King v. Burwell will determine its path. All previous columns by Drew Altman are available online.

  • Proposed Medicaid Expansion in Utah

    Fact Sheet

    This fact sheet provides a summary of the proposal to expand Medicaid in Utah. This has not been officially submitted to CMS and needs state legislative approval before it could be implemented.

  • Web Briefing: Modern Era Medicaid and CHIP – Findings from a 50-State Survey of Eligibility, Enrollment, Renewal, and Cost-Sharing Policies

    Event Date:
    Event

    The Kaiser Commission on Medicaid and the Uninsured (KCMU) hosts a web briefing to present findings from our 13th annual 50-state survey of Medicaid and CHIP eligibility, enrollment, renewal, and cost-sharing policies. The survey provides a profile of where states stand as of January 2015, one year into the implementation of the major Medicaid provisions of the Affordable Care Act (ACA).

  • Visualizing Health Policy: Premium Changes in the Affordable Care Act’s Insurance Marketplaces 2014-2015

    News Release

    This Visualizing Health Policy infographic illustrates the change in monthly premiums by county, and select cities, from 2014 to 2015 for a 40-year-old person covered by the second-lowest-cost silver “benchmark” plan in the Affordable Care Act’s insurance marketplaces. Premium changes were greatest in Summit County, Colo. (45% decrease) and southeastern Alaska (34% increase), before tax credits.

  • Adults who Remained Uninsured at the End of 2014

    Issue Brief

    This report, based on the 2014 Kaiser Survey of Low-Income Americans and the ACA, profiles the adult population that remained uninsured as of Fall 2014. It describes the characteristics of this population, examines why they lack insurance coverage and reasons for not enrolling in ACA coverage, and provides information on the coverage options available to the remaining uninsured and their plans for obtaining coverage in 2015.

  • Federal and State Standards for “Essential Community Providers” under the ACA and Implications for Women’s Health

    Issue Brief

    Safety net providers such as community health centers and family planning clinics have served a significant role in the provision of primary care and reproductive health care services to low-income and uninsured people, particularly women. The Affordable Care Act (ACA) has a provision aimed at assuring that newly-insured individuals, as well as those without coverage, can continue seeing their trusted safety net providers, also called Essential Community Providers (ECPs). This brief reviews the definition of ECPs, examines the federal and state rules that govern the extent to which plans must include these providers in their networks, identifies the variation from state to state, and discusses the particular importance of these rules and providers for women’s access to care.

  • Safety-Net Emergency Departments: A Look at Current Experiences and Challenges

    Issue Brief

    Safety-net hospital emergency departments (EDs) are an important part of our health care system, especially, but not only, for the uninsured and others with low income. With multiple major changes unfolding in our system today, including the development of new models of health care delivery, payment reforms, expanded insurance coverage, and increasing demand for primary care access, safety-net EDs are a sort of crucible in which these shifts and transitions can be seen playing out. To understand more about their current experiences and challenges as the Affordable Care Act (ACA) begins to takes hold, we conducted interviews with ED directors in a convenience sample of 15 safety-net hospitals around the country in June and July 2014.