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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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  • Health Coverage for the Black Population Today and Under the Affordable Care Act

    Fact Sheet

    The Affordable Care Act (ACA) could help many uninsured Blacks through the law’s expansion of Medicaid and the creation of new health insurance exchange marketplaces with tax credits to help moderate-income people purchase coverage. This brief provides an overview of the Black population in the U.S., their health coverage today and the potential impact of the ACA coverage expansions.

  • Medicaid Expansion through Premium Assistance: Key Issues for Beneficiaries in Arkansas’ Section 1115 Demonstration Waiver Proposal

    Issue Brief

    This issue brief provides background about Medicaid premium assistance in the individual health insurance market, summarizes major components of Arkansas’ Section 1115 demonstration waiver application to implement the Affordable Care Act’s Medicaid expansion through premium assistance, and considers key issues affecting beneficiaries.

  • The Cost of Not Expanding Medicaid

    Report

    As states wrap up legislative sessions and make decisions about whether to implement the Medicaid expansion included in the Affordable Care Act (ACA), this new analysis highlights the implications of these decisions for coverage, state budgets and providers. The decisions by as many as 27 states not to adopt the Medicaid expansion will leave a many more uninsured; these states would also forgo billions in federal funds.

  • Health Reform Implementation Timeline

    Interactive

    The health reform implementation timeline is an interactive tool designed to explain how and when the provisions of the Affordable Care Act will be implemented over the next several years.

  • Transitioning Beneficiaries with Complex Care Needs to Medicaid Managed Care: Insights from California

    Issue Brief

    This brief examines how health service providers, plan administrators, and community-based organizations in Contra Costa, Kern, and Los Angeles Counties experienced the transition of Medi-Cal-only seniors and persons with disabilities (SPDs) to managed care as part of the state’s “Bridge to Reform” Medicaid waiver. Findings presented may inform similar transitions of high-need beneficiaries in other states and coverage expansions in 2014 under the Affordable Care Act.

  • California’s Health Care Environment and Health Reform Efforts: June 2013 Update

    Issue Brief

    This brief provides and update of the health care and health policy environment in California, discussing the budgetary environment, implementation of the state's "Bridge to Reform" Medicaid waiver, and efforts to prepare for coverage expansions and new coverage options in 2014 under the Affordable Care Act.

  • Pre-X Redux

    From Drew Altman

    With the focus now mainly on exchanges, Medicaid expansions, and enrolling the uninsured in newly available coverage arrangements, there is less attention lately to the ACA insurance reforms which have always been the most popular parts of the law – changes which could affect every American’s insurance in some way and which go into effect regardless of the implementation decisions states make.  In this column, I draw on our recent tracking polls to review where…