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The ACA MarketplaceS

How Has Marketplace Enrollment Changed Across States in 2026?

Following several years of rapid enrollment growth in the ACA Marketplaces that corresponded with temporary enhanced premium tax credits, enrollment fell for the first time in seven years in 2026, when those tax credits expired. Every state except for New Mexico saw a drop in Marketplace enrollment from 2025 to 2026. State-based Marketplaces that run their own enrollment platforms, including those that partially offset the enhanced tax credits, generally saw lower drops in enrollment.

About the ACA

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Did the Affordable Care Act Make Health Care More Affordable?

The expiration of the ACA’s enhanced premium tax credits at the start of 2026, combined with rising insurer premiums, put a spotlight on health care affordability that extends beyond Marketplace enrollees. KFF’s Cynthia Cox examines the ACA’s record and the broader underlying question it raises: what’s a fair price for Americans people to pay for health care?

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  • Health Reform and State Workforce Challenges: An Early Look at Five States

    Report

    This report provides an early look at state efforts to prepare for health reform, examining the experiences to date in five states (Connecticut, Michigan, Massachusetts, North Carolina and Washington). The report finds that the state political environment and expected leadership transitions create uncertainties and are already factoring into state strategies on health reform implementation. State leaders dealing with an aging workforce, hiring constraints, and the toll from the recession also see a need for additional…

  • State Medicaid Agencies Prepare for Health Care Reform While Continuing to Face Challenges from the Recession

    Issue Brief

    This report, based on discussions with leading state Medicaid directors in May 2010, examines how Medicaid agencies are preparing for a lead role in implementing health reform while continuing to deal with the impact of the recession. The report augments the most recent annual Medicaid budget survey report, released in September 2009, and a mid-year update report released in February 2010. NOTE: Updated report on fiscal years 2010 and 2011 now available. Report (.pdf)

  • Kaiser Health Tracking Poll: March 2013

    Feature

    Three years after the passage of the Affordable Care Act, the March 2013 Kaiser Health Tracking Poll finds that a majority of Americans are unsure how the law will impact them, and few are paying attention to the details of state-level decisions about implementation.

  • Kaiser Health Tracking Poll: June 2013

    Feature

    As the country gears up for implementation of the major provisions of the Affordable Care Act (ACA), June's Kaiser Health Tracking Poll takes a step back and examines views on health insurance more broadly among some key subgroups, including young adults, the uninsured, and those with pre-existing conditions. The poll finds that the large majority of Americans want and value health insurance.

  • Kaiser Health Tracking Poll — October 2011

    Feature

    The October health tracking poll finds a more negative overall public mood about the health reform law, driven largely by changes in support for the law among Democrats. The poll also asked the public’s impressions of the Massachusetts health reform law enacted under then- Gov. Mitt Romney, who is now a candidate for the Republican presidential nomination. Findings from the poll include: After remaining roughly evenly split for most of the last year and a…

  • Kaiser Health Tracking Poll — August 2011

    Feature

    The August tracking poll examines the views of Americans without health insurance, with a particular focus on how they think the health reform law will affect them. Findings from the poll include: Although estimates are that 32 million uninsured Americans will gain coverage under the ACA, only about half of non-elderly Americans currently without coverage say they are familiar with the chief components in the law designed to achieve this goal. Perhaps because awareness of…

  • Kaiser Health Tracking Poll — February 2012

    Feature

    In the midst of continuing debate on the future of the Medicare program, the February Kaiser Family Foundation Tracking Poll finds most Americans and most seniors favor the status quo, though arguments about the program’s solvency have the potential to sway opinion toward new proposals. The survey also gauges public opinion about the ongoing contraceptive coverage debate, views of the Affordable Care Act, and trust in the presidential candidates on health care issues. The February…

  • Kaiser Health Tracking Poll — February 2011

    Feature

    In the wake of the health reform repeal vote in the U.S. House and the ongoing legal challenges over the individual mandate, nearly half the country either believes that the Patient Protection and Affordable Care Act (ACA) has been repealed and is no longer law (22 percent) or doesn’t know enough to say whether it is still law (26 percent). Roughly half of Americans (52 percent) accurately report that the ACA is still the law…

  • Kaiser Health Tracking Poll — February 2010

    Feature

    The February Kaiser Health Tracking Poll finds the public still split on health care reform legislation, with 43 percent in favor and 43 percent opposed. However, the poll also finds that majorities of Americans of all political leanings support several provisions in the health reform proposals in Congress and most attribute delays in passing the legislation to political gamesmanship rather than policy disagreements. The poll finds that at least six of every 10 Republicans, Democrats…

  • Medicaid Financing: An Overview of the Federal Medicaid Matching Rate (FMAP)

    Issue Brief

    Since its enactment in 1965, the Medicaid program has used the Federal Medical Assistance Percentage (FMAP) to determine the federal government's share of the cost of covered services in state Medicaid programs. On average, the federal share has been 57 percent. Beginning in 2014, the Affordable Care Act (ACA) establishes highly enhanced FMAPs for the cost of services to low-income adults with incomes up to 138% of the Federal Poverty Level (FPL) who are not…