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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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  • Fast Track to Coverage: Facilitating Enrollment of Eligible People into the Medicaid Expansion

    Issue Brief

    To help states launch the Affordable Care Act (ACA) Medicaid expansion and efficiently enroll eligible individuals, CMS has offered states a series of facilitated enrollment options. These options include strategies, referred to as “fast track enrollment” in this issue brief, that allow states to enroll eligible individuals into coverage using data already available from their Supplemental Nutrition Assistance programs (SNAP) and/or their Medicaid or Children’s Health Insurance Program (CHIP) programs for children. This issue brief provides an overview of the new “fast track” enrollment options, including how they have been implemented, their impacts, and key lessons learned. It is based on a series of interviews with state officials in Arkansas, Illinois, Oregon and West Virginia conducted by Manatt Health Solutions and the Kaiser Commission on Medicaid and the Uninsured in October 2013.

  • Data Note: Attempting to Measure Early Impact of the ACA through National Public Opinion Polls- A Note of Caution and What to Watch For

    Feature

    After the October start of open enrollment, under the Affordable Care Act, many journalists, policymakers, and the public at large are eager for early data indicating how the law is working from the perspective of potential enrollees. In particular, given the problems with Healthcare.Gov and some of the state exchange websites, many people want quantitative data about people’s experiences attempting to purchase or enroll in some sort of health insurance coverage using these mechanisms.
    This Data Note raises a note of caution about the possible pitfalls of using standard national public opinion polls to make judgments about Americans’ early experiences with health plan enrollment under the ACA.

  • A Profile of Community Health Center Patients: Implications for Policy

    Issue Brief

    Community health centers are a key source of primary care in underserved areas. Their role will grow as coverage expands under the ACA. To sharpen understanding of the health center patient population, this brief compares them to the low-income population overall, using the Health Center Patient Survey and National Health Interview Survey. The pre-ACA profile of health center patients that emerges sets the stage for measuring change and highlights important implications of states’ Medicaid expansion decisions.

  • Sizing Up Exchange Market Competition

    Issue Brief

    This issue brief offers an early look into how competitive the health insurance exchanges (also called marketplaces) are under the Affordable Care Act in selected states. Through analysis of enrollment data released by seven states (California, Connecticut, Minnesota, New York, Nevada, Rhode Island, and Washington) this brief finds that exchange markets in California and New York are shaping up to be more competitive than their individual markets were in 2012 while those of Connecticut and Washington show less competition (less even market share distribution). In several states, market concentration of individual insurers have shifted significantly compared to the individual market prior to the ACA, pointing to the potential for greater price competition in the future and the influence of new entrants to the market.

  • Kaiser Health Tracking Poll: March 2014

    Feature

    The March Kaiser Health Tracking Poll finds that the gap between unfavorable and favorable opinions of the ACA narrowed this month among the public and the uninsured, and more want Congress to improve the law than replace it. The survey also finds that six in ten of the uninsured are unaware of the March 31 deadline to sign up for coverage, and half say they plan to remain uninsured.

  • Health Reform: How Will Medicaid Change? 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.

  • State Fiscal Conditions and Medicaid: 2014 Update

    Issue Brief

    This issue brief provides an overview of Medicaid financing, Medicaid’s role in state budgets, the relationship between Medicaid and the economy and how the ACA and the Medicaid expansion could affect state budgets.

  • How Will the Uninsured Fare Under the Affordable Care Act?

    Fact Sheet

    This report explains how the ACA expands coverage nationally, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people are eligible for Medicaid or financial assistance in the Marketplace. For states not expanding Medicaid, the report quantifies how many uninsured people fall into the “coverage gap,” meaning they will be ineligible for financial assistance in the Marketplace or for Medicaid in their state despite having an income below the federal poverty level.

  • State Marketplace Profiles: West Virginia

    Other Post

    Final update made on October 24, 2013 (no further updates will be made) Establishing the Marketplace On February 15, 2013, Governor Earl Ray Tomblin (D) submitted a blueprint to Secretary Sebelius for West Virginia to establish a Partnership Marketplace with plan management responsibilities.