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Affordable Care Act

The ACA MarketplaceS

Tracking Insurer Changes in the ACA Marketplaces in 2027

As of June 22, six carriers have announced that they will exit the Marketplaces in plan year 2027, either in some or all states that they are currently offering plans; four carriers have announced they will enter new Marketplaces.

An image of text is an excerpt from Cynthia Cox's quick take which reads, "While the Trump administration attributes this drop in enrollment to their attempts to address fraud, this coverage loss happened at the same time millions of people faced steep increases in their premium payments — often in the double or even triple digits — with the expiration of enhanced tax credits."

ACA Marketplace Enrollment Is Down By 3 Million After Big Jump in Premium Payments

Enrollment dropped 13% following the expiration of enhanced premium tax credits at the beginning of this year. Enrollment fell from a high of 22.1 million people in 2025 to 19.2 million people in February 2026. While the Trump administration attributes this drop in enrollment to their attempts to address fraud, this coverage loss happened at the same time millions of people faced steep increases in their premium payments – often in the double or even triple digits – with the expiration of enhanced tax credits.

POLLING on the ACA

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.

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  • “What is CMMI?” and 11 other FAQs about the CMS Innovation Center

    Fact Sheet

    The Center for Medicare and Medicaid Innovation (CMMI), also known as the "Innovation Center," was authorized under the Affordable Care Act with the goals of designing, implementing, and testing new payment and delivery system reform models to address concerns about rising costs, quality of care, and inefficient spending. These FAQs provide an overview of the Innovation Center, as well as details on model performance, beneficiary involvement, and more.

  • New Chart Collection Examines the Public’s Malleable Views Around a National Health Plan and Expanding Access to Medicare

    News Release

    For many years, the Kaiser Family Foundation has been tracking public opinion on the idea of national health plan. Since the 2016 Democratic presidential primary and Sen. Bernie Sanders’ rallying cry for “Medicare-for-all,” our polls have shown a modest increase in support for the idea of a national health plan, and broad support for proposals that expand Medicare. At the same time, our polls also show that support can quickly erode when people hear further…

  • The Numbers Behind “Young Invincibles” and the Affordable Care Act

    Perspective

    As enrollment statistics in the new health insurance marketplaces start to become available, there is a growing focus on whether the enrollment of so-called “young invincibles” will be sufficient to keep insurance markets stable. Enrollment of young adults is important, but not as important as conventional wisdom suggests since premiums are still permitted to vary substantially by age. Because of this, a premium “death spiral” is highly unlikely. Why does the age distribution of enrollees…

  • April Kaiser Health Tracking Poll: Core Views on ACA Remain Stable After Oral Arguments

    Perspective

    The increased public attention to the Affordable Care Act (ACA) generated by the Supreme Court’s consideration of the law did not meaningfully change the public’s opinion of the law overall or of the specific provision at the heart of the legal case against it, the individual mandate. Forty-two percent say they have a favorable opinion of the law this month and 43 percent have an unfavorable one, a division virtually unchanged from March. Similarly, the…

  • Transparency and Complexity

    Perspective

    This fall a new rule takes effect requiring all private health plans to offer a uniform, simple to read, summary of benefits and coverage (SBC).  The SBC will provide consumers with standardized information about how plans cover essential health benefits and what coverage limits and cost sharing applies. The SBC is one of the most popular provisions of the ACA.  Consumers often find health insurance difficult to understand and would no doubt welcome a plainly written…

  • Health Insurance Transparency under the Affordable Care Act

    Perspective

    In February, a final rule was issued implementing the Affordable Care Act (ACA) requirement that all health plans provide a uniform summary of coverage for all enrollees and applicants. The idea of providing easy-to-understand summaries of coverage is, in fact, the most popular provision in the ACA, according to a recent Kaiser tracking poll. That finding suggests powerful consumer frustration over the complexity of health insurance and the difficulty people face evaluating health insurance choices and understanding…

  • March Kaiser Health Tracking Poll: The ACA at Two Years; The Individual Mandate and the Supreme Court

    Perspective

    As the Patient Protection and Affordable Care Act (ACA) nears its second birthday, the latest Kaiser Health Tracking Poll finds that public opinion on the law remains evenly split (41 percent favorable, 40 percent unfavorable) with sharp divisions along partisan lines, much as it has been since the law was passed. With the Supreme Court preparing to hear challenges to the law later this month, about half the public thinks the Court should strike down the…

  • Is a Death Spiral Inevitable If There is No Mandate?

    Perspective

    If the Supreme Court acts within the next couple of weeks to overturn the individual mandate in the Affordable Care Act (ACA) while leaving the rest of the law intact, expect to hear a lot about how the individual insurance market will be destined for a "death spiral." When compared with implementing the ACA in full as planned, there's a consensus that eliminating the mandate would increase premiums and mean that far fewer of the…

  • How the ACA Changes Pathways to Insurance Coverage for People with HIV

    Perspective

    There are multiple sources of insurance coverage and care for people with HIV in the United States.  These include public programs, such as Medicaid and Medicare, and the Ryan White HIV/AIDS program, as well as private coverage through an employer or in the individual market. Medicaid, the nation's principal safety-net health insurance program for low-income Americans, is estimated to cover the largest share of people with HIV. Fewer are covered by Medicare, the federal health…