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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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  • Essential Health Benefits: Balancing Affordability and Adequacy

    Event Date:
    Event

    Under the Patient Protection and Affordable Care Act (PPACA), insurance plans offered through state insurance exchanges as well as non-grandfathered plans offered in the individual and small group markets - will be required to cover a set of health benefits and services called the "essential health benefits" package.

  • Coverage of Colonoscopies Under the Affordable Care Act’s Prevention Benefit

    Report

    The Affordable Care Act (ACA) requires private health insurers to cover recommended preventive services such as colonoscopies without any patient cost-sharing. This report finds that confusion over whether colon cancer screenings are preventive care or treatment means patients sometimes receive unexpected bills for the procedure. The report examines cost-sharing practices for colorectal screenings through interviews with experts and officials in the medical and insurance industries.

    This report was co-authored by The Kaiser Family Foundation, American Cancer Society, and National Colorectal Cancer Roundtable.

  • Prescription Drug Trends Fact Sheet – May 2010 Update

    Fact Sheet

    This updated fact sheet provides trend information about prescription drug expenditures and coverage, key factors that contribute to rising prescription spending, and efforts to contain rising drug costs. May 2010 Fact Sheet (.

  • Medicaid: A Primer – Key Information on the Nation’s Health Coverage Program for Low-Income People

    Issue Brief

    This Medicaid primer provides an overview of the nation's largest health coverage program, which covers more than 62 million low-income individuals, including children and families, people with disabilities and seniors who are also covered by Medicare. Medicaid also is the dominant source of the country’s long-term care financing. The program will expand significantly under the Affordable Care Act in 2014.

  • Pulling it Together: On Health Reform, Will All Roads Meet in the Middle?

    Perspective

    A few weeks ago a small group of upset single-payer advocates followed Senator Baucus into the parking garage of our D.C. building as he was arriving to do one of our health reform newsmaker breakfasts, cosponsored by Families USA and the National Federation of Independent Business.

  • Health Reform: Implications for Women’s Access to Coverage and Care

    Issue Brief

    This issue brief, Health Reform: Implications for Women's Access to Coverage and Care, reviews how the Affordable Care Act is expected to affect access to care and affordability of health coverage for women. It also explains the provisions in the health reform law related to preventive screening services, reproductive health, maternity care and women on Medicare. The brief includes national and state-level estimates of the percentage of uninsured women ages 18-64 who are likely to qualify for federal help under the law and a summary of key coverage and benefits provisions in the health reform law that affect women.

  • Small Area Variations and the ACA’s Coverage Expansions

    From Drew Altman

    A new Kaiser analysis sheds light on how the country might react to the Affordable Care Act (ACA) when it is implemented.  It looks at how the benefits of the ACA's coverage expansions will vary around the country by census areas (technically, Public Use Microdata Areas, or PUMAs).

  • Explaining Health Reform: Key Changes in the Medicare Advantage Program

    Issue Brief

    This brief examines the changes in the 2010 health reform law affecting the Medicare Advantage program, which gives beneficiaries the option of enrolling in private insurance plans for their Medicare benefits, instead of the traditional fee-for-service program.

  • Understanding The Medicaid And CHIP Maintenance of Eligibility Requirements

    Fact Sheet

    This fact sheet examines the provisions in the Patient Protection and Affordable Care Act (ACA) that require states to maintain eligibility and enrollment standards for Medicaid and the Children's Health Insurance Program. These maintenance of eligibility (MOE) provisions were designed to keep Medicaid and CHIP coverage stable until coverage expands under the health reform law.