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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.”

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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

Timely insights and analysis from KFF staff

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  • Analysis of 2015 Premium Changes in the Affordable Care Act’s Health Insurance Marketplaces

    Issue Brief

    This analysis provides an early look at premium changes for individuals in the health insurance marketplaces, created under the Affordable Care Act (ACA), in major cities across 15 states plus DC. Although premium changes vary across and within states, premium changes for 2015 in general are modest when looking at low-cost plans. On average, individuals will pay slightly less in premiums for the benchmark silver plan in 2015 than in 2014.

  • Voters In Competitive Senate States Report Seeing More ACA Ads, Especially Ads Opposed To The Law

    Kaiser Health Tracking Poll: August-September 2014

    Feature

    The latest Kaiser Health Tracking Poll includes a special look at registered voters’ views and what role, if any, the the Affordable Care Act might be playing in the upcoming midterm election. Partisan divisions on the law are as deep as ever, not only when it comes to overall opinion but also in the public’s perception of how the law has impacted their own families and the next steps they want Congress to take.

  • An Overview of Medicaid Incentives for the Prevention of Chronic Diseases (MIPCD) Grants

    Issue Brief

    This brief provides an overview of the Medicaid Incentives for the Prevention of Chronic Diseases (MIPCD) grants and highlights key findings from the interim evaluation of the program. The brief also places these grants in context of pre-Affordable Care Act (ACA) Medicaid beneficiary incentive programs and proposed programs of states that are incorporating healthy behavior incentives into Medicaid expansion waivers.

  • Connecting Consumers to Coverage: Lessons Learned from Assisters for Successful Outreach and Enrollment

    Issue Brief

    This brief highlights the experiences of Navigators and other Marketplace consumer assistance programs under the Affordable Care Act (Obamacare) in conducting outreach and providing enrollment assistance during the ACA's first open enrollment period. It provides insight into the outreach and enrollment strategies the assisters developed and identifies the keys to successfully overcoming the challenges of the first year. These insights are based on findings from focus groups with assisters in four cities: Miami, Florida; Houston, Texas; Raleigh, North Carolina; and Cleveland, Ohio.

  • Market Share of Largest Insurance Carrier in the Individual Insurance Market, 2010

    Feature

    Market Share of Largest Insurance Carrier in the Individual Insurance Market, 2010 Download Source Kaiser Family Foundation analysis of 2010 insurer filings to the National Association of Insurance Commissioners and the California Department of Managed Health Care using the Mark Farrah Associates Health Coverage Portal TM.