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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

Timely insights and analysis from KFF staff

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  • Employer Responsibility Under the Affordable Care Act

    Other Post

    The Affordable Care Act does not require businesses to provide health benefits to their workers, but applicable large employers may face penalties if they don’t make affordable coverage available. The employer shared responsibility provision of the Affordable Care Act penalizes employers who either do not offer coverage or do not offer coverage that meets minimum value and affordability standards. These penalties apply to firms with 50 or more full-time equivalent employees. This flowchart illustrates how those employer responsibilities work.

  • Health Reform Hits Main Street

    Video

    This short cartoon explains the problems with the current health care system, the health reform changes that are happening now, and the big changes coming in 2014 as part of the Affordable Care Act (ACA). You can view the video on our site and it is also available on YouTube.

  • Health Reform Implementation Timeline

    Interactive

    The health reform implementation timeline is an interactive tool designed to explain how and when the provisions of the Affordable Care Act will be implemented over the next several years.

  • Mapping the Effects of the ACA’s Health Insurance Coverage Expansions

    Interactive

    The Foundation originally released this interactive tool in February 2012.  More recent analysis of the Affordable Care Act's potential impact on each state's uninsured population can be accessed through this interactive tool and these individual state reports.

  • Ensuring the Health Care Needs of Women: A Checklist for Health Exchanges

    Issue Brief

    To inform the development of the state health insurance Exchanges under the Affordable Care Act, this checklist identifies key coverage, affordability and access issues that are important for women. Based on lessons learned from women’s health research and the Massachusetts experience, the checklist considers essential health benefits, implementation of no-cost preventive services including contraception, provider networks and affordability, outreach and enrollment efforts, and the importance of including gender and other demographic characteristics in data collection and reporting standards.

  • Women’s Health Quiz: Health Coverage and the Affordable Care Act

    Feature

    Health insurance coverage is a critical factor in making health care accessible to women—women with health coverage are more likely to obtain needed preventive, primary, and specialty care services. Test your knowledge of women’s health coverage and the effect of the Affordable Care Act on women with our ten-question quiz.

  • Testimony: Wellness Programs and Nondiscrimination Under Employer-Sponsored Group Health Plans

    Issue Brief

    This testimony by the Foundation's Karen Pollitz before the Equal Employment Opportunity Commission included background on wellness programs, wellness incentives and nondiscrimination since 1996, and questions and issues related to proposed regulations governing the design and application of wellness programs offered in conjunction with employer-sponsored group health plans.