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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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  • New Reports Find States Expecting 7.4 Percent Growth in Medicaid Spending In Fiscal Year 2011 As the Recession’s Lingering Effects Drive Up Enrollment

    News Release

    States Face New Budget and Workforce Challenges As Temporary Federal Aid Nears End And Health Reform Planning Heats Up WASHINGTON, D.C. – Due to the nation’s deep recession, states experienced rapid growth in their Medicaid enrollment and spending last year and expect additional growth, though at a slower pace, in fiscal year 2011, according to a survey of state Medicaid officials in all 50 states released today by the Kaiser Family Foundation’s Commission on Medicaid and…

  • Kaiser Family Foundation Launches Online Health Reform Source to Explain, Analyze, and Track the New Law’s Implementation

    News Release

    New Initial Features Include Animated Movie Explaining the Law, Policy and Public Opinion Monitoring, and State-Specific Data MENLO PARK, Calif. -- Nearly six months since the signing of the Patient Protection and Affordable Care Act and as some key provisions are due to be implemented, the Kaiser Family Foundation today launched an online gateway providing easy access to new and comprehensive resources on the health reform law.  Recognizing the transition from the debate about passage…

  • Americans Remain Split On Stalled Health Care Legislation, but Some Provisions Popular Among Majorities of Democrats, Independents and Republicans

    News Release

    Most See Delays As Driven By Politics Rather Than Policy MENLO PARK, CA – The latest Kaiser Tracking Poll finds the public still split on health care reform legislation, with 43 percent in favor and 43 percent opposed.  However, the poll also finds that majorities of Americans of all political leanings support several provisions in the health reform proposals in Congress and most attribute delays in passing the legislation to political gamesmanship rather than policy…

  • Mapping the Effects of the ACA’s Health Insurance Coverage Expansions

    Interactive

    The Foundation originally released this interactive tool in February 2012.  More recent analysis of the Affordable Care Act's potential impact on each state's uninsured population can be accessed through this interactive tool and these individual state reports. The Affordable Care Act includes several provisions that allow many individuals across the U.S. to be eligible for Medicaid or for federal tax credits to subsidize the cost of insurance. The analysis below and zip code tool estimate…

  • How Will Health Reform Impact Young Adults?

    Issue Brief

    Adults ages 19 to 29 have the highest uninsured rate of any age group in the United States. The 13.7 million uninsured people in this age group comprise nearly a third of the overall uninsured population.  Most provisions in health reform do not specifically target young adults, but because of their high uninsured rate they will be one of the groups that is most affected by the new law. This paper explains the key ways in…

  • Key Lessons from Medicaid and CHIP for Outreach and Enrollment Under the Affordable Care Act

    Issue Brief

    The Affordable Care Act (ACA) will significantly increase coverage options through an expansion of Medicaid and the creation of new health insurance exchange marketplaces. However, effective outreach and enrollment efforts will be key to ensuring that new coverage opportunities translate into increased coverage. Based on a review of existing research, this brief identifies five key lessons learned through previous Medicaid and CHIP experience to help inform outreach and enrollment under the ACA. The brief is…

  • Quality of Care in Community Health Centers and Factors Associated with Performance

    Issue Brief

    This study examines quality among health centers relative to Medicaid managed care organizations (MCOs). Chronic care quality among health centers is high; gaps in women’s preventive care are a concern. Lower-performing health centers have very high uninsured and homeless rates. The expansion of Medicaid and private insurance under the ACA may foster gains in health center quality performance.