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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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  • A Look at the Private Option in Arkansas

    Issue Brief

    Based on stakeholder interviews and early data on coverage, reduced uncompensated care costs, and other topics, this issue brief provides an initial look at implementation of Arkansas' Section 1115 Medicaid expansion demonstration waiver to require most adults newly eligible for Medicaid through the Affordable Care Act's Medicaid expansion to enroll in Marketplace plans.

  • Data Note: Abbreviated January 2016 Health Tracking Poll Topline

    Feature

    This is an abbreviated topline for the upcoming January 2016 Kaiser Health Tracking Poll.  It contains the survey questions addressed in Drew Altman's column, "Candidate Policy Plans Resonate More With Democrats. Here’s Why," for The Wall Street Journal's Think Tank.

  • Uninsured Tutorial

    Interactive

    This tutorial was produced for kaiserEDU.org, a Kaiser Family Foundation website that ceased production in September 2013. The kaiserEDU.org tutorials are no longer being updated but have been made available on kff.org due to demand by professors who are using the tutorials in class assignments. You may search for other tutorials to view on kff.org.

  • Kaiser Health Policy Tracking Poll: December 2014

    Feature

    With many of the Affordable Care Act’s (ACA) major provisions taking effect this past year, the December Kaiser Health Tracking Poll finds that many Americans are aware of the main parts of the law and, with the exception of the individual mandate, at least 6 in 10 feel favorably towards them. The poll finds the vast majority of the uninsured don’t know the deadline to enroll, most expect to get health insurance in the next few months, and nearly two-thirds say they don’t think they’ll have to pay a fine, or don’t know if they will, for not having coverage this year.

  • Web Briefing: Early Impacts of the Medicaid Expansion for the Homeless Population

    Event Date:
    Event

    The Affordable Care Act’s Medicaid expansion provides a significant opportunity to increase health coverage and improve access to care for individuals experiencing homelessness, who historically have had high uninsured rates and often have multiple, complex physical and mental health needs.

  • Kaiser Health Tracking Poll: December 2015

    Feature

    The ACA’s third open enrollment will come to a close at the end of January and the December Kaiser Health Tracking Poll finds that only 7 percent of the uninsured correctly identify this as the deadline to enroll in coverage. With Democratic presidential candidates debating the idea of Medicare-for-all, which involves creating a national health plan in which all Americans would get their insurance through an expanded version of the Medicare program, most Democrats like the idea, but very few say the issue will drive their votes in the 2016 elections. As the U.S. Senate voted to repeal the Affordable Care Act (ACA) earlier this month, more of the public views the health care law unfavorably than favorably (46 percent vs. 40 percent). In addition, the public remains divided over what Congress should do next with the law, with 35 percent supporting repeal, 14 percent supporting scaling back the law, 18 percent who say they would like to see it implemented as is, and 22 percent who say they want the law expanded.