Affordable Care Act

The ACA MarketplaceS

Individual Market Enrollment Declined by 18% Since June 2025

Individual Market Enrollment Fell 18%, Suggesting Continued ACA Marketplace Losses

Enrollment in the individual health insurance market fell by 18%—over 4.6 million people—from 25.2 million in June 2025 to 20.5 million in June 2026. Falling individual market enrollment suggests further decline in ACA Marketplace enrollment this year, since Marketplace enrollees represent the vast majority of individual market coverage.

About the ACA

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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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  • 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.

  • 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.

  • 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.

  • A Discussion with Leading Medicaid Directors: As FY 2013 Ends, Looking toward Health Care Reform Implementation in 2014

    Issue Brief

    The Kaiser Commission on Medicaid and the Uninsured convened a focus group discussion with Medicaid directors who serve on the Board of the National Association of Medicaid Directors (NAMD). The discussion focused on state progress and concerns about implementing the ACA including eligibility system changes and state action on the Medicaid expansion decision as well as activity around payment and delivery system reform, and other budget and enrollment trends. The discussion took place in May…

  • 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.

  • Data Note: Americans’ Views on the Personal Impact of the ACA and the Supreme Court’s Decision

    Poll Finding

    This Data Note draws from the March 2012 Kaiser Health Tracking Poll and examines people's impressions of how the law and the Court case will affect them, focusing primarily on those groups that are in the position to receive the greatest benefits. For the most part, those that stand to benefit most are not more likely than others to expect to be better off under the law, or to feel that the Supreme Court's decision…