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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  • Health Insurance Marketplace Calculator

    Feature

    The Health Insurance Marketplace Calculator, updated with 2025 premium data, 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).

  • Map shows the percentage point increase in the uninsured population due to the budget reconciliation package based on CBO estimates, by state. An Additional 10M People Nationwide Could be Uninsured in 2034 Due to the Budget Reconciliation Law

    How Will the 2025 Reconciliation Law Affect the Uninsured Rate in Each State?

    Issue Brief

    This analysis apportions the increase in the number of uninsured across the 50 states and DC. CBO estimates that the reconciliation law will increase the number of uninsured by 10M in 2034 and rise to over 14M if enhanced premium tax credits for ACA Marketplace enrollees expire later this year.

  • Affordability in the ACA Marketplace Under a Proposal Like Joe Biden’s Health Plan

    Issue Brief

    This KFF analysis finds that expanding Affordable Care Act (ACA) premium subsidies like Democratic presidential nominee Joe Biden has proposed would lower the cost of Marketplace coverage for nearly all potential enrollees, including the uninsured and others currently priced out of the Marketplace. Biden's plan would, however, increase federal spending, which we do not attempt to estimate here.

  • Loss of the Affordable Care Act Would Widen Racial Disparities in Health Coverage

    Policy Watch

    In November, the Supreme Court is scheduled to hear arguments on a legal challenge that seeks to overturn the Affordable Care Act (ACA). This analysis shows that new coverage options under the ACA have contributed to large gains in coverage, particularly among people of color, helping to narrow longstanding racial disparities in health coverage.

  • Health Policy 101 Introduction

    Feature

    Health Policy 101 is a comprehensive guide covering fundamental aspects of U.S. health policy and programs, including Medicare, Medicaid, the Affordable Care Act, employer-sponsored insurance, the uninsured population, health care costs and affordability, women's health issues, and health care politics. It includes overviews of private health insurance regulation, racial and ethnic disparities, public health, international comparison of health systems, U.S. global health policy, and the federal role in health policy. The chapters can be downloaded…

  • Affordable Care Act Marketplace and Medicaid Expansion Enrollment Reached a Combined 44 Million in 2024  

    News Release

    A new KFF analysis finds that there were 44 million people enrolled in health coverage through the Affordable Care Act’s Marketplaces and its expansion of the Medicaid program in 2024. That represents about 1 in every 6 people under age 65, or 16.4%.   There was significant variation in ACA enrollment across states, ranging from about 1 in 4 nonelderly people in Louisiana, Oregon, Florida, and New York to fewer than 1 in 10 in…

  • What’s Next for the Affordable Care Act?

    Event Date:
    Event

    Health coverage enrollment through the ACA marketplaces now exceeds 24 million people, a dramatic increase in recent years fueled largely by enhanced premium aid. With the subsidies set to expire at the end of this year, Congress and the Trump Administration will be faced with a choice of whether and how to extend the subsidies, alongside broader discussion about the budget. On February 10, KFF’s Larry Levitt moderated a 45-minute virtual discussion with an expert…

  • Calculadora del Mercado de Seguros Médicos

    Feature

    Esta calculadora ilustra las primas (el costo mensual de su seguro) y subsidios para las personas que compran seguro médico por su propia cuenta en el mercado de seguros de salud (o de intercambio) creado por la Ley de Cuidado de Salud a Bajo Precio (Affordable Care Act, ACA, en inglés). Con esta calculadora, usted puede introducir diferentes niveles de ingresos, edades, y el tamaño de su familia para obtener un estimado de su elegibilidad…