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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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  • Insurance Markets in a Post-King World

    Perspective

    This perspective addresses how insurance markets might respond if the US Supreme Court sides with the plaintiffs in the King v. Burwell case. The case challenges the legality of premium and cost-sharing subsidies for low- and middle-income people buying insurance in states where the federal government rather than the state is operating the marketplace under the Affordable Care Act (ACA).

  • The Coverage Provisions in the Affordable Care Act: An Update

    Issue Brief

    This brief examines the coverage provisions of the Affordable Care Act , providing an update on how they have been implemented and assessing their impact five years after the law's enactment. It also discusses key issues for coverage going forward.

  • JAMA Forum: Why Health Insurance Literacy Matters

    Perspective

    Larry Levitt's November 2014 post looks at the challenges with people not understanding basic health insurance concepts as millions of them evaluate and choose health plans during open enrollment season for insurance in 2015.

  • Web Briefing for Journalists: How ACA’s Employer Requirements and Related Provisions Affect Businesses and Workers

    Event Date:
    Event

    A major piece of the Affordable Care Act will first take effect January 1 when larger employers will be required to offer coverage to their workers or face penalties. How do the penalties work and how are they being phased in? To help reporters understand and cover these issues, the Kaiser Family Foundation held a web briefing exclusively for journalists.

  • Health Insurance Coverage for People with HIV Under the Affordable Care Act: Experiences in Five States

    Issue Brief

    To provide greater insight into how Affordable Care Act (ACA) implementation has affected people with HIV during the first year of major insurance expansions, this issue brief examines the experiences of people with HIV based on focus groups conducted in five states: California, Florida, Georgia, New York, and Texas. It is a part of KFF's larger ACA sentinel sites project.

  • Kaiser Health Policy News Index: December 2014

    Feature

    Other than the big stories of Ferguson, Ebola and ISIS, the only other news which captured a majority of the public’s attention this month was President Obama’s executive order on immigration. Smaller, yet substantial, shares report closely following many health policy news stories this month. Over four in ten say they closely followed the lawsuit filed by House Republicans against President Obama over the implementation of the health care law and about a third say they followed a change in the official estimate for the number of people that enrolled in health insurance during the ACA’s first open enrollment period and the ACA’s second open enrollment period. The least closely followed health policy story of those asked about this month, was coverage of comments about the ACA made by MIT health economist, Jonathan Gruber

  • Medical Debt Among Insured Consumers: The Role of Cost Sharing, Transparency, and Consumer Assistance

    Perspective

    This policy insight examines medical debt among insured consumers, exploring how high cost sharing in health insurance plans can contribute, and explaining how greater transparency could help consumers avoid some financial pitfalls. It also provides an update on provisions of the Affordable Care Act meant to increase health plan transparency and bolster consumer assistance.

  • New Policy Insight Examines Medical Debt Among Insured Consumers

    News Release

    In this new policy insight, Kaiser Family Foundation Senior Fellow Karen Pollitz explores how high cost sharing in health insurance plans can contribute to an individual’s medical debt, and explains how greater transparency in plan details could help consumers avoid some financial pitfalls.

  • How is the ACA Impacting Medicaid Enrollment?

    Issue Brief

    This issue brief provides an overview of new Medicaid enrollment data released by Centers for Medicare and Medicaid Services and its interpretation to assess the influence of the ACA on Medicaid enrollment.

  • What People Don’t Realize About the Affordable Care Act

    From Drew Altman

    Drew Altman, in The Wall Street Journal’s Think Tank, discusses what people don’t realize about the ACA: it is engineered for variation and it is up to Congress and the states to learn from that variation.