Affordable Care Act

The ACA MarketplaceS

Change in February effectuated enrollment, by state, 2025-2026

How Has ACA Marketplace Enrollment Changed Across States in 2026?

ACA Marketplace enrollment fell this year in every state except New Mexico, which was the only state to fully replace the enhanced premium tax credits that expired last year with a state-funded subsidy, according to a new KFF analysis of effectuated enrollment data. The Marketplace enrollment decline—the first in seven years—follows several years of rapid enrollment growth and coincides with the end of the enhanced federal subsidies.

How Much and Why ACA Marketplace Premiums Are Going Up in 2027

ACA Marketplaces insurers are proposing a median premium increase of 15% in 2027, according to KFF’s updated analysis of 276 insurers with publicly available filings across all 50 states and the District of Columbia. This is the second consecutive year of double-digit premium hikes. Last year’s median nationwide proposed rate change was 18%, and the median finalized rate change was 20%. While this proposed rate change is lower than last year, it represents the second-highest requested rate change since 2018, as premium growth had been relatively flat in this market for several years.

About the ACA

Promotional image for KFF video How Affordable is the Affordable Care Act

Did the Affordable Care Act Make Health Care More Affordable?

The expiration of the ACA’s enhanced premium tax credits at the start of 2026, combined with rising insurer premiums, put a spotlight on health care affordability that extends beyond Marketplace enrollees. KFF’s Cynthia Cox examines the ACA’s record and the broader underlying question it raises: what’s a fair price for Americans people to pay for health care?

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  • 8 Things to Watch for the 2026 ACA Open Enrollment Period

    8 Things to Watch for the 2026 ACA Open Enrollment Period

    Issue Brief

    The ACA Marketplace Open Enrollment season begins November 1, and with it comes looming changes to the enhanced premium tax credits, increases in out-of-pocket premium payments, new Marketplace eligibility rules, and more. Read our analysis of what these and other changes could mean for new and returning enrollees.

  • 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.

  • 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…