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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  • 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.…

  • An Overview of New CMS Data on the Number of Adults Enrolled in the ACA Medicaid Expansion

    Issue Brief

    New preliminary data from the Medicaid Budget and Expenditure System (MBES) released by CMS details for the first time the number of adults enrolled in Medicaid under the new Affordable Care Act (ACA) Medicaid expansion category. This issue brief provides an overview of the new data as well as how it differs from the Performance Indicator data.

  • Trends in Medicaid Spending Leading up to ACA Implementation

    Issue Brief

    This paper presents data on Medicaid spending during the years leading up to the implementation of the Affordable Care Act (ACA). It uses administrative data to first examine overall spending trends and trends by service type. We then draw on additional data to analyze per enrollee spending growth during this period, both by service type and by eligibility group, to understand what drove Medicaid spending.

  • Are Uninsured Adults Who Could Gain Medicaid Coverage Working?

    Fact Sheet

    As additional states consider whether to implement the ACA Medicaid expansion, some have raised pursuing waiver authority to tie Medicaid eligibility for adults under the expansion to work requirements. This fact sheet profiles uninsured adults who could gain Medicaid coverage under the ACA by their relationship to the workforce and job-based coverage.

  • Consumer Assets and Patient Cost Sharing

    Issue Brief

    Higher cost sharing in private insurance has been credited with helping to slow the growth of health care costs in recent years. For families with low incomes or moderate incomes, however, high deductibles, out-of-pocket limits and other cost sharing can be a potential barrier to care and may lead these families to significant financial difficulties. This issue brief uses information from the Federal Reserve Board's 2013 Survey of Consumer Finances to look at how household…

  • In Employer Health Insurance Costs, Stability Is the New Normal

    From Drew Altman

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman looks at the sharply slower growth in premiums for employer health benefits and what it might mean for the future of employer-sponsored coverage.

  • An Overview of Medicaid Incentives for the Prevention of Chronic Diseases (MIPCD) Grants

    Issue Brief

    This brief provides an overview of the Medicaid Incentives for the Prevention of Chronic Diseases (MIPCD) grants and highlights key findings from the interim evaluation of the program. The brief also places these grants in context of pre-Affordable Care Act (ACA) Medicaid beneficiary incentive programs and proposed programs of states that are incorporating healthy behavior incentives into Medicaid expansion waivers.

  • Implementing the ACA: Medicaid Spending & Enrollment Growth for FY 2014 and FY 2015

    Issue Brief

    This report provides an overview of Medicaid financing and Medicaid spending and enrollment growth with a focus on state fiscal years 2014 and 2015 (FY 2014 and FY 2015.) Findings are based on interviews and data provided by state Medicaid directors as part of the 14th annual survey of Medicaid directors in all 50 states and the District of Columbia conducted by the Kaiser Commission on Medicaid and the Uninsured (KCMU) survey with Health Management…

  • Infographic: How Does Where You Work Affect Your Contraceptive Coverage?

    News Release

    The Affordable Care Act’s requirement that most private health insurance plans provide contraceptive coverage has been the focus of ongoing litigation in the federal courts. In response to recent Supreme Court actions in the Hobby Lobby and College of Wheaton cases, the U.S. Department of Health and Human Services issued an interim final rule and a proposed rule on August 22, 2014 addressing how some employers with religious objections to birth control can comply with…