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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  • Key Facts about the Uninsured Population

    Issue Brief

    The number and share of people without insurance grew in 2024, increasing for the first time since 2019, according to KFF's analysis of data from the American Community Survey (ACS). This issue brief describes trends in health coverage in 2024, examines the characteristics of the uninsured population , and summarizes the access and financial implications of not having coverage.

  • CMS Requires More Restrictive Definition of Medical Frailty in New Medicaid Work Requirements Rule

    Quick Insights

    On June 1, 2026, the Centers for Medicare and Medicaid Services (CMS) issued an interim final rule on Medicaid work requirements that adopts a restrictive definition of medical frailty—differing from states’ early expectations. The more restrictive definition of medical frailty adopted by the Trump Administration will be challenging for states to implement and could lead to more people falling through the cracks and losing coverage.

  • Kaiser November Health Tracking Poll: Individual Elements of the ACA Popular with the Public

    Perspective

    After taking a negative turn in October, the public’s overall views on the Patient Protection and Affordable Care Act (ACA) returned to a more mixed status this month. Still, Americans remain somewhat more likely to have an unfavorable view of the law (44 percent) than a favorable one (37 percent). The Kaiser Family Foundation's November Health Tracking Poll also finds that individual elements of the law are viewed favorably by a majority of the public. The law’s…

  • Health Reform and Communities of Color: Implications for Racial and Ethnic Health Disparities

    Issue Brief

    This issue brief examines the key provisions of the 2010 health reform law that will expand health coverage and are likely to improve access to care for people of color, as well as some of the other provisions that will likely have either a direct or indirect impact on health disparities. Issue Brief (.pdf)) Previous Version: November 2009 (.pdf)

  • A Focus Group with Medicaid Directors: As FY 2012 Ends, Looking Toward FY 2013

    Report

    This report is based on a focus group discussion in May 2012 with the Executive Board of the National Association of Medicaid Directors (NAMD) and other leading Medicaid directors. The group of nine directors reflected perspectives from various regions of the country. The discussion focused on state fiscal conditions, Medicaid spending and enrollment trends, key Medicaid policy changes and federal health care reform implementation. At the time of the meeting, most states were wrapping up…

  • Building an Information Technology Foundation for Health Reform: A look at Recent Guidance and Funding Opportunities

    Issue Brief

    The major coverage provisions in the Affordable Care Act (ACA) go into effect in January 2014 with an expansion of Medicaid eligibility to nearly all individuals under 138% of poverty and new subsidies for individuals with incomes between 138% and 400% of poverty to purchase coverage in newly established Health Insurance Exchanges. The ACA envisions a streamlined and simplified application process with seamless transitions between coverage in the Exchange and Medicaid. Using a web portal,…

  • Inside Deficit Reduction: What Now?

    Event Date:
    Event

    The Budget Control Act of 2011 tasked members of a "Super Committee" to find at least $1.2 trillion in deficit reduction over the next decade. Members did not reach an agreement by the November 23 deadline and as a result automatic spending cuts to defense and entitlement programs are set to kick in beginning in January 2013. Panelists at this briefing discussed the impact the sequester will have on the health care sector and how…

  • Briefing, Survey Examine 2012 Data From 50-State Survey of Medicaid and CHIP Eligibility and Enrollment Policies

    Event Date:
    Event

    Despite continued tight state budgets, a requirement in the Affordable Care Act (ACA) that states maintain eligibility in Medicaid and Children’s Health Insurance Programs was central in preserving coverage during 2011. In addition, more than half of states (29) made improvements in their programs, often using technology to increase program efficiency and streamline enrollment. These and other findings appear in the Kaiser Commission on Medicaid and the Uninsured report, "Performing Under Pressure: Annual Findings of…

  • Quality Care for Less Money: Can Regional Successes Go National?

    Event Date:
    Event

    On February 15, the Kaiser Family Foundation hosted an event featuring a PBS documentary with former Washington Post correspondent T.R. Reid – U.S. Health Care: The Good News – which explores efforts to provide low-cost, quality health care in the U.S. The film looks at variations in health spending across the country and showcases efficient health care delivery systems, like Grand Junction in Colorado and Group Health in Seattle, suggesting that these communities demonstrate that…

  • Oral Health in the U.S.: Key Facts

    Fact Sheet

    This fact sheet provides data on oral health care coverage and access for children, nonelderly adults and Medicaid beneficiaries, including state-by-state data on measures such as the share of adults who have had a dental visit within the past year. Fact Sheet (.pdf)