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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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  • 2019 Premium Changes on ACA Exchanges

    Issue Brief

    This tracker monitors preliminary 2019 premiums in the Affordable Care Act’s marketplaces as insurers file rate information with state regulators. It shows preliminary premium information in a major city in each available state for the lowest-cost bronze plan and “benchmark” silver plan, which is used to determine the size of the premium tax credits available to low- and moderate-income enrollees. The tracker also shows how those premiums are changing from 2018 and what a 40-year-old…

  • Implications of “Medicare for All” and “Public Plan” Strategies: New Brief and Interactive Tool Summarize Legislative Proposals and Key Issues

    News Release

    The idea of expanding the role of government programs such as Medicare and Medicaid has received renewed attention on Capitol Hill and on the campaign trail this year as policymakers consider ways to expand health insurance coverage and moderate health care costs. Lawmakers have introduced eight such proposals in the current Congress. They range from bills that would create a new, all-encompassing national health insurance program (sometimes called “Medicare-for-All”) to less sweeping measures that would…

  • Medicare-for-All and Public Plan Buy-In Proposals: Overview and Key Issues

    Issue Brief

    This issue brief compares eight Medicare-for-All and public plan option bills that have been introduced in the 115th Congress. The brief describes the range of proposals on the table and raises key questions related to how these proposals could affect coverage, out-of-pocket costs, existing coverage, payments to providers, as well as overall costs and financing, and potential tradeoffs.

  • 2018 Elections: Key Medicaid Issues to Watch

    Issue Brief

    Medicaid provides health insurance coverage for more than 76 million Americans, supplies funding for safety-net providers, and is the largest source of federal revenues for states. At this time last year, Congress was debating repeal and replace of the Affordable Care Act (ACA) as well as more fundamental changes to Medicaid financing. While federal legislative changes to Medicaid did not pass in 2017, the outcomes of the 2018 elections will shape program changes at both…

  • Un año después de las tormentas: la recuperación y la atención de salud en Puerto Rico y las Islas Vírgenes de EE.UU. (Informe)

    Issue Brief

    Un año después que los huracanes Irma y María tocaran tierra, Puerto Rico y las Islas Vírgenes de EE.UU. (USVI) todavía sienten los efectos de las tormentas. Basándose en entrevistas con partes interesadas clave y en informes públicos, este reporte proporciona una visión general del estado de recuperación y los esfuerzos de preparación para la actual temporada de huracanes, un año después de las tormentas, enfocándose en los sistemas de atención de salud de los…

  • Kaiser Health Tracking Poll – Late Summer 2018: The Election, Pre-Existing Conditions, and Surprises on Medical Bills

    Feature

    The latest Kaiser Health Tracking Poll continues to find pre-existing conditions as a widespread concern with most Americans saying it is very important that the Affordable Care Act’s (ACA) protections for people with pre-existing conditions remain law. With health care costs continuing to be a major topic in the 2018 campaigns, the poll looks at the public’s experiences with unexpected medical bills and finds that this tops a list of possible problems people could face.…

  • Poll: The ACA’s Pre-Existing Condition Protections Remain Popular with the Public, including Republicans, As Legal Challenge Looms This Week

    News Release

    Public Not Confident in President Trump’s Calls on Drug Companies to Lower Prices As a federal court considers a challenge to the Affordable Care Act’s constitutionality, the public, including most Republicans, wants protections for people with pre-existing conditions preserved, the latest Kaiser Family Foundation tracking poll finds. Large majorities of Americans say it is “very important” to retain the ACA provisions that prevent insurance companies from denying coverage based on a person’s medical history (75%)…

  • 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…

  • New Analysis Maps Prevalence of Pre-Existing Conditions by Metro Area

    News Release

    A new Kaiser Family Foundation analysis maps rates of pre-existing conditions across 129 metropolitan and micropolitan areas in the U.S., finding that even within the same state, the prevalence of such conditions can vary substantially. For example, 34 percent of residents of Florence, South Carolina have a pre-existing condition, but further south in Charleston and Hilton Head, the rate is 24 percent. The share of non-elderly adults with a pre-existing condition ranges from 41 percent…