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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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  • Children’s Health Coverage: Medicaid, CHIP and the ACA

    Issue Brief

    This brief provides an overview of children’s coverage leading up to the implementation of the Affordable Care Act (ACA), a review of changes for children included in the ACA, and a look at issues leading up to the reauthorization of the CHIP program.

  • Majorities Across Party Lines Support Investing More Money in Zika Research and Preventing the Virus’ Spread

    News Release

    Democrats More Favorable to ACA in June, Leading to 44% Unfavorable, 42% Favorable Overall Split Majorities of the public say the United States should invest more money in Zika research and in preventing its spread in this country, the latest Kaiser Health Tracking Poll finds. More than seven in 10 people, including majorities of Democrats, Republicans, and independents, say they support investing in Zika research and to prevent its spread. About two thirds of the…

  • The Wisconsin Health Care Landscape

    Fact Sheet

    Wisconsin has long been a leader among states in expanding coverage to its low-income residents since even before the major coverage provisions of the Affordable Care Act (ACA) took effect on January 1, 2014. While Governor Scott Walker decided not to adopt the Medicaid expansion, thousands of previously uninsured Wisconsinites have enrolled in health coverage through the state’s broad BadgerCare Medicaid waiver, which increases coverage to low-income populations, and through the new Health Insurance Marketplace.…

  • Insurance Markets in a Post-King World

    Perspective

    This perspective addresses how insurance markets might respond if the US Supreme Court sides with the plaintiffs in the King v. Burwell case. The case challenges the legality of premium and cost-sharing subsidies for low- and middle-income people buying insurance in states where the federal government rather than the state is operating the marketplace under the Affordable Care Act (ACA).

  • How is the ACA Impacting Medicaid Enrollment?

    Issue Brief

    This issue brief provides an overview of new Medicaid enrollment data released by Centers for Medicare and Medicaid Services and its interpretation to assess the influence of the ACA on Medicaid enrollment.

  • Survey of Non-Group Health Insurance Enrollees

    Report

    Executive Summary January 1, 2014 marked the beginning of several provisions of the Affordable Care Act (ACA) making significant changes to the non-group insurance market, including new rules for insurers regarding who they must cover and what they can charge, along with the opening of new Health Insurance Marketplaces (also known as “Exchanges”) and the availability of premium and cost-sharing subsidies for individuals with low to moderate incomes. Data from the Department of Health and…

  • Health Care Costs: A Primer

    Issue Brief

    This primer on health care spending in the United States reviews the growth in health care spending since 1970 and the impact of health care costs on families and employers.