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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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  • The Uninsured And The Difference Health Insurance Makes

    Fact Sheet

    This fact sheet describes the characteristics of the uninsured and explains the recent increase in this population. It also examines the difference that health insurance can make and how health reform is expected to cover millions more people.

  • Pulling It Together: Perspectives on State Health Reform

    Perspective

    This Pulling It Together column is the fourth in my new series. All four so far have dealt with different dimensions of health reform. This time I write about one of my favorite topics, the states.

  • Uncompensated Care for the Uninsured in 2013: A Detailed Examination

    Report

    This report provides estimates of spending for uncompensated care, in 2013, just before implementation of health reform’s major coverage provisions. The report estimates the amount of uncompensated care provided, analyzes the site of care for uncompensated services, and details sources of funding for uncompensated care. These estimates provide an important baseline against which to measure major changes that are occurring under the ACA.

  • Avoiding the Wrong Lessons From the VA and HealthCare.gov Problems

    From Drew Altman

    This was published as a Wall Street Journal Think Tank column on May 27, 2014. Problems with the launch of HealthCare.gov and with veterans hospitals allegedly concealing long waits for care feed a narrative that government doesn’t work. But many government programs, including Medicare and Social Security, work well.

  • The Washington State Health Care Landscape

    Fact Sheet

    This fact sheet provides an overview of population health, health coverage, and health care delivery in Washington under the Affordable Care Act (ACA).

  • Strategies in 4 Safety-Net Hospitals to Adapt to the ACA

    Issue Brief

    This brief examines four safety-net hospitals to learn how they were preparing for the full implementation of the Affordable Care Act (ACA), in order to gain additional insight into the strategies being used and challenges being faced among safety-net hospitals across the country.

  • Medicaid Enrollment: An Overview of the CMS April 2014 Update

    Fact Sheet

    CMS recently released its latest update on Medicaid and CHIP enrollment data, covering the period through April 2014. This fact sheet provides a brief overview of the latest data and what it suggests about the impact of the ACA on Medicaid and CHIP enrollment, providing historical trends for context

  • Potential Supreme Court Decision: Who Will Bear the Coverage “Burdens?”

    Issue Brief

    The Supreme Court is expected to reach a decision by the end of June, 2014 on the cases brought forth by Hobby Lobby and Conestoga Wood Specialties, two for profit corporations challenging the ACA’s contraceptive coverage requirement. The plaintiffs contend that the requirement that they include coverage for certain contraceptive services (emergency contraceptive pills and intrauterine devices) in the insurance plans “substantially burdens” both the corporation’s and the owners’ religious rights. During the arguments, several of the justices discussed the extent to which the corporations did or not did not have a choice in offering coverage to their workers. In this brief, we explore some of the factors influencing coverage decisions and possible consequences for women and employers given possible Supreme Court decision options: either upholding the contraceptive coverage requirement, or in favor of Hobby Lobby.