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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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  • Proposed Medicaid Section 1115 Waivers in Maine and Wisconsin

    Issue Brief

    While the future of legislation to repeal and replace the Affordable Care Act (ACA) and make fundamental changes to the structure and funding of the Medicaid program is uncertain, states and the Administration may achieve major changes to Medicaid through the use of Section 1115 Medicaid waivers. Wisconsin submitted a waiver amendment request to CMS in June 2017 and Maine submitted a waiver application to CMS in August 2017. Unlike previous waivers that encompass the…

  • State-by-State Estimates of Reductions in Federal Medicaid Funding Under Repeal of the ACA Medicaid Expansion

    Issue Brief

    Congressional debate around the Affordable Care Act (ACA) has recently included a proposal to repeal the ACA, including the provision allowing states to extend Medicaid to childless adults up to 138% FPL and providing enhanced federal funds for the Medicaid expansion. This brief provides estimates of changes in federal Medicaid funds and Medicaid coverage for adults covered through the ACA expansion if the expansion is eliminated starting in 2020. A repeal of the Medicaid expansion…

  • Senate Health Bill Proposes Big Changes to Medicaid Beyond Repealing and Replacing the ACA

    News Release

    The Better Care Reconciliation Act (BCRA) under consideration in Congress includes provisions that would fundamentally change Medicaid by phasing out extra federal funding for states’ Medicaid expansions and for the first time limiting federal spending on Medicaid through a per enrollee cap on financing or a block grant for certain adults. While those measures account for most of the bill’s $756 billion reduction in federal Medicaid spending over the next decade, there are other big…

  • How Single Payer Helps Republicans Change the Subject

    From Drew Altman

    In this Axios column, Drew Altman analyzes the political pros and cons of single payer for Democrats and whether it will shift the focus from the Republicans' failed effort to repeal and replace  the Affordable Care Act to the Democrats new sweeping plan.

  • The Impact of the Coverage Gap for Adults in States not Expanding Medicaid by Race and Ethnicity

    Issue Brief

    The Affordable Care Act (ACA) expansion of Medicaid to adults with incomes at or below 138% of the federal poverty level (FPL) effectively became a state option following the Supreme Court decision, creating a “coverage gap” for many poor uninsured adults in states that do not expand Medicaid. This brief examines the coverage gap by race and ethnicity.

  • How Will the Uninsured in Arizona Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Arizona, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Arizona are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Illinois Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Illinois, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Illinois are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in New Hampshire Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in New Hampshire, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in New Hampshire are eligible for Medicaid or financial…