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Affordable Care Act

The ACA MarketplaceS

How Has Marketplace Enrollment Changed Across States in 2026?

Following several years of rapid enrollment growth in the ACA Marketplaces that corresponded with temporary enhanced premium tax credits, enrollment fell for the first time in seven years in 2026, when those tax credits expired. Every state except for New Mexico saw a drop in Marketplace enrollment from 2025 to 2026. State-based Marketplaces that run their own enrollment platforms, including those that partially offset the enhanced tax credits, generally saw lower drops in enrollment.

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 Insurance Explained: The YouToons Have it Covered

    Video

    In this five-minute animated video, the YouToons help consumers understand their health insurance through fun, easy-to-understand explanations and scenarios. This cartoon serves as a tutorial for consumers and organizations. The YouToons previously appeared in the 2010 animated movie, "Health Reform Hits Main Street" and the 2013, "The YouToons Get Ready for Obamacare: Health Insurance Changes Coming Your Way Under the Affordable Care Act."

  • Medicaid Family Planning Programs: Case Studies of Six States After ACA Implementation

    Report

    In light of the coverage trends and other ACA-related changes, this paper describes the impact on women and their partners, as well as family planning providers, of the impact of family planning expansion programs under Medicaid. It is based largely on interviews with state officials, providers and consumer advocates in Alabama, California, Connecticut, Illinois, Missouri and Virginia – a cross-section of states in terms of geography, Medicaid expansion status, and implementation of a Medicaid family…

  • Analysis of Insurer Participation in 2016 Marketplaces

    Issue Brief

    As Marketplace enrollees begin to shop for coverage starting in 2016, the number of insurance choices available to them is changing in some parts of the country.  In early 2015, an average of 6.1 insurer groups offered coverage in each state, up from an average of 5.0 in 2014.  Since then, some insurers have announced their exit or been required to withdraw from the Marketplaces, most notably a number of nonprofit Consumer Operated and Oriented…

  • The Health Reform Law’s Medicaid Expansion: A Guide to the Supreme Court Arguments

    Issue Brief

    One significant element of the pending U.S. Supreme Court case challenging the Affordable Care Act is the constitutionality of the law's Medicaid expansion. This provision of the law requires states that choose to participate in the Medicaid program to cover nearly all adults under age 65 with household incomes at or below 133% of the federal poverty level as of January 2014. A ruling on the Medicaid expansion could have far-reaching impacts on the present…

  • Income-Relating Medicare Part B and Part D Premiums: How Many Medicare Beneficiaries Will Be Affected?

    Issue Brief

    Income-Relating Medicare Part B and Part D Premiums: How Many Medicare Beneficiaries Will Be Affected? New in February 2012: Brief Examines Proposals to Further Expand Medicare's Income-Related Premiums This new analysis from the Kaiser Family Foundation examines the number of Medicare beneficiaries who will pay higher Part B or Part D premiums as a result of newly enacted provisions included the 2010 health reform law. Part B Premiums. The health reform law modifies a requirement…