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The ACA Marketplace

2025 KFF Marketplace Enrollees Survey

In 2025, about one in three ACA enrollees said they would be “very likely” to look for a lower-premium Marketplace plan If their premium payments doubled.

Cost Concerns and Coverage Changes: A Follow-Up Survey of ACA Marketplace Enrollees

Following the expiration of the enhanced premium tax credits for people with Affordable Care Act (ACA) Marketplace plans, a new KFF follow-up survey of the same Marketplace enrollees KFF surveyed in 2025 finds half (51%) of returning enrollees say their health care costs are “a lot higher” this year compared to last year, including four in 10 who specifically say their premiums are “a lot higher.”

new and noteworthy
POLLING

Tracking the Public’s Views on the ACA

While overall opinion of the Affordable Care Act has been more favorable than unfavorable since 2017, there remain deep partisan divides. See how public opinion on the ACA has changed from the inception of the law to the present. This interactive tool highlights key moments when views shifted and trends based on party identification, income, age, gender, and race/ethnicity.
DATA

Marketplace Enrollment is Down in 2026—But All of the Data Isn’t in Yet

ANALYSIS

Higher Premium Payments or Higher Deductibles: The ACA's Tradeoffs

QUIZ

Test Your Knowledge of the Affordable Care Act

ANALYSIS

Competition Increased in Individual Market But Fell in Fully Insured Group Markets

Timely insights and analysis from KFF staff

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  • Wisconsin’s BadgerCare Program and the ACA

    Fact Sheet

    This fact sheet provides an overview of changes to BadgerCare, Wisconsin's 1115 waiver demonstration project, and how it relates to the Affordable Care Act's Medicaid expansion.

  • Measuring Changes in Insurance Coverage Under the Affordable Care Act

    Issue Brief

    This data note discusses the details and timing of some of the private and federal surveys that will be used to look at how coverage has changed due to the Affordable Care Act. Different surveys offer different information and insight into coverage under the ACA, and we discuss the contributions and challenges in each type of effort.

  • Visualizing Health Policy: Preventive Services for Women and the ACA

    Other Post

    This month’s Visualizing Health Policy infographic takes a look at preventive health services for women, including missed opportunities for preventive counseling on risk factors (such as smoking or alcohol) and sexual health issues (such as contraception, sexually transmitted infections, and domestic violence), the effects of lack of insurance on rates of mammograms and other screening…

  • Medicare Advantage: Take Another Look

    Perspective

    This Policy Insight explores possible explanations for the continued rise in Medicare Advantage enrollment between 2010 and 2013 in spite of a projected decrease following payment changes in the Affordable Care Act (ACA).

  • The Health-Cost Problem Is Coming Back

    From Drew Altman

    Drew Altman, in The Wall Street Journal’s Think Tank, discusses how the conversation will soon shift back to health-care costs from health coverage, because they are rising more sharply again. And as the discussion turns back, he says that because there is no national agreement on a strategy to address increasing costs, current efforts in the public and private sector, however fragmented and uncoordinated, will need to step up their game.

  • Visualizing Health Policy: Preventive Services for Women and the Affordable Care Act

    News Release

    This month’s Visualizing Health Policy infographic takes a look at preventive health services for women, including missed opportunities for preventive counseling on risk factors (such as smoking or alcohol) and sexual health issues (such as contraception, sexually transmitted infections, and domestic violence), the effects of lack of insurance on rates of mammograms and other screening…

  • Health Coverage and Care for Youth in the Juvenile Justice System: The Role of Medicaid and CHIP

    Issue Brief

    This brief provides an overview of the health and mental health needs of girls and boys in the juvenile justice system and the role of Medicaid and CHIP in addressing those needs. It focuses on the circumstances of youth who are placed in juvenile justice residential facilities, the discontinuity of Medicaid coverage for those youth, and the options for improving coverage, continuity of care and access to needed services post-discharge, including new opportunities provided by the Affordable Care Act (ACA).

  • Medicaid Enrollment Snapshot: December 2013

    Issue Brief

    This report focuses on changes in monthly Medicaid enrollment between December 2012 and December 2013. This is a long standing report series that collects monthly Medicaid enrollment data for December (and June, not reported here) going back to 2000. While the most recent data included in this report predate preliminary data released by CMS that show the early effects of full implementation of the ACA, this report series is an important source of historical trend data that provides the necessary context to understand these new sources of Medicaid enrollment data. In addition to providing historical trends, these data also provide more detail about enrollment, such as the distribution of the enrollment among children, adults,or the elderly and people with disabilities, as well as Medicaid enrollment trends for each of these groups.

  • New Analysis Provides Early Look At Increase in Individual Market Enrollees 

    News Release

    A new Kaiser Family Foundation analysis of health insurer reports to state regulators provides a first glimpse of enrollment in the individual, or non-group, insurance market under the Affordable Care Act.  These initial filings reflect enrollment both through the new state insurance marketplaces created under the Affordable Care Act as well as through off-exchange plans.