Affordable Care Act

The ACA Marketplace

2025 KFF Marketplace Enrollees Survey

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, according to a KFF survey conducted in 2025.

New AND NOTEWORTHY

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.

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  • State Fiscal Conditions and Medicaid: 2014 Update

    Issue Brief

    This issue brief provides an overview of Medicaid financing, Medicaid’s role in state budgets, the relationship between Medicaid and the economy and how the ACA and the Medicaid expansion could affect state budgets.

  • 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.

  • 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.

  • 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.

  • Ten Changes to Watch in Open Enrollment 2022

    Issue Brief

    Even as the ninth annual Open Enrollment period gets underway, the Affordable Care Act (ACA) Marketplaces continue to evolve and important changes are expected. This issue brief discusses what changes to watch out for in the coming enrollment period.

  • 2021 Health Insurance Marketplace Calculator

    Interactive

    The Health Insurance Marketplace Calculator, updated with 2021 premium data and to reflect subsidies in the American Rescue Plan Act of 2021, provides estimates of health insurance premiums and subsidies for people purchasing insurance on their own in health insurance exchanges (or “Marketplaces”) created by the Affordable Care Act (ACA). With this calculator, you can enter your income, age, and family size to estimate your eligibility for subsidies and how much you could spend on…

  • More Than 6 in 10 of the Remaining 27.4 Million Uninsured People in the U.S. are Eligible for Subsidized ACA Marketplace Coverage, Medicaid or the Children’s Health Insurance Program

    News Release

    Recent policy attention has focused on efforts to reduce the number of uninsured people in the U.S. by expanding eligibility for coverage assistance, including enhanced premium subsidies in the Affordable Care Act (ACA) Marketplace and filling the Medicaid “coverage gap.” A new KFF analysis shows that a majority of the 27.4 million people who remained uninsured in 2020 already are eligible for financial assistance for coverage through Medicaid/CHIP or the Marketplace, suggesting that policies in…

  • Declines in Uncompensated Care Costs for The Uninsured under the ACA and Implications of Recent Growth in the Uninsured Rate

    Issue Brief

    The increase in the uninsured rate in recent years, as well as loss of coverage during the pandemic, has led to attention on the consequences of being uninsured. The need for medical care to test, treat, or prevent COVID-19 has also highlighted the potential consequences of uncompensated care for uninsured people. Uncompensated care costs occur because, although people who are uninsured use less care than people with coverage, most who are uninsured have limited income…