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In 2024, ACA enrollment (including Marketplace, Medicaid expansion, and BHP) reached 44 million, or 16.4% of the nonelderly U.S. population. From 2020-2024, enrollment in ACA coverage increased by over 60%.
This brief evaluates what is currently known about fraud and abuse in the Affordable Care Act (ACA) Marketplace, including how the final Marketplace Integrity and Affordability Rule and the recently enacted budget reconciliation law change existing Marketplace enrollment and eligibility standards.
The Congressional Budget Office’s (CBO) latest estimate shows that the One Big Beautiful Bill would reduce federal Medicaid spending by $793 and that the Medicaid provisions would increase the number of uninsured people by 7.8 million. Previous CBO estimates show that 10.3 million fewer people would be enrolled in Medicaid in 2034. Building on prior KFF analysis, this analysis allocates these estimated federal spending reductions and enrollment losses across the states.
This brief takes a closer look at the five largest publicly traded companies (also referred to as “parent” firms) operating Medicaid MCOs, which account for half of Medicaid MCO enrollment nationally. This analysis presents the latest enrollment and financial data (through the end of 2023) as well as key takeaways from the firms’ unwinding experience.
State Medicaid unwinding data show procedural disenrollment rates are high across most states. This policy watch provides insights for interpreting the data and describes steps the Centers for Medicare and Medicaid Services (CMS) and states are taking to reduce procedural disenrollments.
This analysis estimates Medicaid enrollment growth by state and eligibility group between February 2020, before the pandemic, and March 31, 2023, at the end of the continuous eligibility period. These estimates can help paint a picture of the overall number and composition of enrollees who may risk coverage loss after the continuous enrollment provision ends.
This analysis estimates that 48% of adults under age 65 with individual market coverage are either employed by a small business with fewer than 25 workers, self-employed entrepreneurs, or small business owners. Because the vast majority of this coverage is purchased through the Affordable Care Act (ACA) Marketplaces, changes to the ACA, including the expiration of the enhanced premium tax credits at the end of this year, would have significant implications for what small business owners and workers spend on their health care.
With President-elect Trump returning to the White House and Republicans controlling Congress, significant changes to the Medicaid expansion are expected. This data note provides key facts on the Medicaid expansion, highlighting the financial and coverage impacts of any changes across states that voted for President-elect Trump and those that voted for Vice President Harris.
This issue brief examines Medicaid expansion enrollment and Medicaid spending in expansion and non-expansion states and describes the characteristics of adults covered by the Medicaid expansion.
This brief considers how default enrollment into Medicare Advantage might work, potential challenges with this approach, and implications for beneficiaries, insurers, providers, agents and brokers, and the federal budget.
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