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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  • The Affordable Care Act’s Enduring Resilience

    Perspective

    In this article in the Journal of Health Politics, Policy and Law, Larry Levitt examines the Affordable Care Act 10 years after it's enactment. The article notes that the law has taken numerous blows, yet due to its policy design and the political forces it has unleashed, the law has shown remarkable resilience.

  • KFF March Health Tracking Poll: One Year Later, Views on Health Reform Remain Divided

    Perspective

    Health reform is a year old and the latest Kaiser Health Tracking Poll finds a basic division that has changed little during the last 12 months. This month, 42 percent of Americans hold favorable views of the law while 46 percent view it unfavorably. In April 2010, the month after passage, 46 percent had favorable views and 40 percent unfavorable ones, but both figures have ticked up and down over the last year. Opinion of…

  • Proposed Models to Integrate Medicare and Medicaid Benefits for Dual Eligibles: A Look at the 15 State Design Contracts Funded By CMS

    Issue Brief

    This brief summarizes 15 states' preliminary proposals to better coordinate care for people who are in both the Medicare and Medicaid programs. The design contracts, funded by the federal Center for Medicare and Medicaid Innovation (CMMI), are an outgrowth of new efforts under the health reform law to develop service delivery and payment models that integrate care for the nation’s nearly 9 million "dual eligibles," whose medical needs and health care costs typically exceed those…

  • Firm Perspectives on the Medicare Advantage Market

    Issue Brief

    Based on interviews with senior executives at 14 large firms, the issue brief finds that insurers anticipate continuing to offer Medicare Advantage plans in 2012, in part because of a Medicare demonstration project that will award bonus payments to plans based on their quality standards. A companion issue brief examines trends in Medicare Advantage enrollment in 2011. The analysis was conducted by researchers at Mathematica Policy Research, Inc. and the Kaiser Family Foundation. Issue Brief…

  • The Affordable Care Act 101

    Feature

    This Health Policy 101 chapter provides an overview of the Affordable Care Act (ACA), a major reform of the U.S. health care system aimed at reducing high uninsured rates and alleviating issues like high out-of-pocket costs and coverage exclusions for preexisting conditions. The ACA significantly altered many aspects of the health system and the chapter explores its mechanisms, such as the Health Insurance Marketplaces, and the evolution of the law since its passage in 2010…

  • Costs, Coverage, and Enrollment Changes: Exploring Current Public Opinion and Policy on the ACA Marketplaces

    Event Date:
    Event

    Following the expiration of the enhanced premium tax credits at the end of 2025, many Americans enrolled in the ACA Marketplaces have faced higher health care costs and reconsidered their coverage options given affordability concerns. To learn more, join KFF public opinion and policy experts for a virtual event focused on the key issues facing ACA Marketplace enrollees and policy considerations, particularly as health care cost and coverage issues rise to the top of voters’…