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How Much and Why ACA Marketplace Premiums Are Going Up in 2026

This analysis of initial rate filings from all 50 states and DC shows ACA Marketplace insurers are proposing a median premium increase of 18% for 2026, more than double last year’s 7% median proposed increase. The analysis includes proposed rate changes by state and insurer.

Data and analysis

The Uninsured Population and Health Coverage

This Health Policy 101 chapter examines the share of the United States population who are uninsured, highlighting their demographics and the challenges they face because of the lack of coverage.

How Many Uninsured Are in the Coverage Gap?

This analysis estimates that 1.4 million uninsured individuals in the 10 states without Medicaid expansion, including many working adults, people of color, and those with disabilities, remain in the “coverage gap,” ineligible for Medicaid or for tax credits that would make coverage ACA's Marketplaces affordable to them.

Key Facts about the Uninsured Population

The number of people ages 0-64 who were uninsured held steady at 25.3 million in 2023, although the number of uninsured children rose from 3.8 million to 4.0 million. Most uninsured people are in low-income families and have at least one worker in the family.

How the Unwinding Affected Enrollees

Over half who were disenrolled say they put off needed medical care while trying to renew Medicaid. Overall, 19% of adults who had Medicaid prior to the start of unwinding say they were disenrolled at some point in the past year. Of this group, a large majority (70%) were left at least temporarily uninsured.

The uninsured: How costs affect care and health, 2023

Latest Polling
8%

Percent of adults who reported not having health insurance
55%

Percent of uninsured adults who reported delaying or forgoing some form of health care due to cost
19%

Percent of uninsured adults who report that they or a family member had difficulty paying medical bills
38%

Percent of uninsured adults who reported not having a usual source of care (vs. 8% of insured adults)
Peterson-KFF Health System Tracker

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  • Data Note: 5 Misconceptions Surrounding the ACA

    Feature

    On the seventh anniversary of the passing of the Affordable Care Act, this Data Note highlights five of the most common misconceptions surrounding the 2010 health care law.

  • A Final Look: California’s Previously Uninsured after the ACA’s Third Open Enrollment Period

    Report

    The Kaiser Family Foundation California Longitudinal Panel Survey is a series of surveys that, over time, tracked the experiences and views of a representative, randomly selected sample of Californians who were uninsured prior to the major coverage expansions under the Affordable Care Act (ACA). The initial baseline survey was conducted with a representative sample of 2,001 nonelderly uninsured Californian adults in summer 2013, prior to the ACA’s initial open enrollment period. After each enrollment period concluded, a survey was conducted of the same group of previously uninsured Californians who participated in the baseline (a longitudinal panel survey). The fourth and final survey in the series, and the focus of this report, followed up with them after the third open enrollment period in spring 2016 to find out whether more have gained coverage, lost coverage, or remained uninsured, what barriers to coverage remain, how those who now have insurance view their coverage, and to assess the impacts that gaining health insurance may have had on financial security and access to care.

  • The Louisiana Health Care Landscape

    Fact Sheet

    This fact sheet provides an overview of resident socio-demographic characteristics, population health, health coverage, and the health care delivery system in Louisiana both pre-Hurricane Katrina and in the era of health reform.

  • Connecting the Justice-Involved Population to Medicaid Coverage and Care: Findings from Three States

    Issue Brief

    This brief provides an overview of initiatives to connect the justice-involved population to Medicaid coverage and care in the community in three states—Arizona, Connecticut, and Massachusetts—based on interviews with key stakeholders. These states are leading efforts in these areas and provide key lessons about how to coordinate across health care and corrections and the potential of such initiatives to better link individuals to the physical and behavioral services they need. Each of the case study states is connecting individuals to coverage at multiple points within the justice system. The study states also connect individuals to care in the community as they are released from jail or prison. Stakeholders and data indicate that these approaches have increased coverage, facilitated access to care, and contributed to administrative efficiencies and state savings. However, more data and time are needed to examine the effects on health and criminal justice outcomes, including recidivism rates.

  • Nearly 20 Million Children Live in Immigrant Families that Could Be Affected by Evolving Immigration Policies

    Issue Brief

    President Trump has intensified national debate about immigration by implementing policies to enhance immigration enforcement and restrict legal immigration. Recent findings show that the climate surrounding these policies has significantly increased fear and uncertainty among immigrant families, broadly affecting families across different immigration statuses and locations. The effects extend to lawfully present immigrants, including lawful permanent residents or “green card” holders, and children in immigrant families, who are predominantly U.S.-born citizens. In particular, findings point to both short- and long-term negative consequences on the health and well-being of children in immigrant families.
    Potential changes to public charge policies intended to reduce use of public programs by immigrant families, including their citizen children, could further increase strains on immigrant families and lead to losses in health coverage. To provide insight into the scope of potential impacts of continually evolving immigration policy on children, this data note provides nationwide and state-level estimates (Table 1) of citizen children living in immigrant families and the number currently covered by Medicaid/CHIP coverage.

  • Declines in Uncompensated Care Costs for The Uninsured under the ACA and Implications of Recent Growth in the Uninsured Rate

    Issue Brief

    The increase in the uninsured rate in recent years, as well as loss of coverage during the pandemic, has led to attention on the consequences of being uninsured. The need for medical care to test, treat, or prevent COVID-19 has also highlighted the potential consequences of uncompensated care for uninsured people. Uncompensated care costs occur because, although people who are uninsured use less care than people with coverage, most who are uninsured have limited income or resources and cannot afford the high cost of medical care, if and when they do need or use health care.