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Affordable Care Act

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.”

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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

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  • Key Findings from the Field: Early Experience with ACA Enrollment in Maryland and Nevada

    Issue Brief

    To learn more about the early ACA enrollment experience in two states, the Kaiser Commission on Medicaid and the Uninsured and PerryUndem Research and Communication conducted focus groups in Baltimore, Maryland and Reno, Nevada in November 2013 with low- and moderate-income individuals who recently applied for health insurance and consumer assisters trained to help individuals enroll. This study builds on previous work that examined preparations for open enrollment in several states, including Maryland and Nevada, which are both moving forward with the ACA’s Medicaid expansion to low-income adults and have established their own State-based Marketplace (SBM). The focus group discussions included adults who had successfully applied as well as consumer assisters.This brief provides key findings about the early ACA enrollment experience in Baltimore, Maryland and Reno, Nevada based on focus group discussions with these recent applicants and enrollment assisters.

  • Coverage for Abortion Services and the ACA

    Issue Brief

    This issue brief, Coverage of Abortion Services and the Affordable Care Act (ACA), summarizes the major coverage provisions of the ACA that are relevant for women of reproductive age, reviews current federal and state policies on Medicaid and insurance coverage of abortion services as they relate to the ACA, and presents national and state estimates on the availability of abortion coverage for women who are newly eligible for Medicaid or private coverage through the Marketplaces as a result of the ACA.

  • Medicaid Enrollment: June 2013 Data Snapshot

    Issue Brief

    This Data Snapshot provides 50-state data on Medicaid monthly enrollment trends, adding June 2013 data. Overall, Medicaid enrollment growth continued to slow to the lowest rate since the start of the Great Recession as the economic conditions continued to slowly improve. While enrollment growth rates have been trending downward as economic conditions continue to slowly improve, enrollment growth is expected to increase significantly as states implement the ACA. Regardless of whether states decide to implement the Medicaid expansion or not, enrollment is anticipated to grow on average across all states due to new streamlined eligibility and enrollment processes as well as outreach for new coverage. This report provides baseline data for understanding the impact of the ACA eligibility and enrollment policies on enrollment growth across states.

  • 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.

  • Are More Americans Benefiting From Obamacare Than Realize It?

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman discusses why many people may not know whether or not they are benefiting from the Affordable Care Act. All previous columns by Drew Altman are available online.

  • State-by-State Effects of a Ruling for the Challengers in King v. Burwell

    Interactive

    A map and table showing the number of people now receiving premium subsidies who would lose them if the Court finds for the challengers; the total amount of federal subsidy dollars; the average subsidy (or average premium tax credit) that subsidized enrollees have qualified for; and the average increase in premiums that subsidized enrollees would face if the subsidies are disallowed.

  • How Have Insurers Fared Under the Affordable Care Act?

    Perspective

    This analysis tracks the financial performance of insurers in the individual market by evaluating trends in the medical loss ratio (MLR) in the pre-ACA landscape from 2010 to 2013 and estimates the MLR for the first full year of Affordable Care Act implementation in 2014. Findings suggest that although performance varied among insurers, insurers overall had roughly comparable financial performance in 2014 as in recent prior years.