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The ACA Marketplace

2025 KFF Marketplace Enrollees Survey

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, according to a KFF survey conducted in 2025.

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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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  • Ten Changes to Watch in Open Enrollment 2022

    Issue Brief

    Even as the ninth annual Open Enrollment period gets underway, the Affordable Care Act (ACA) Marketplaces continue to evolve and important changes are expected. This issue brief discusses what changes to watch out for in the coming enrollment period.

  • 2021 Health Insurance Marketplace Calculator

    Interactive

    The Health Insurance Marketplace Calculator, updated with 2021 premium data and to reflect subsidies in the American Rescue Plan Act of 2021, provides estimates of health insurance premiums and subsidies for people purchasing insurance on their own in health insurance exchanges (or “Marketplaces”) created by the Affordable Care Act (ACA). With this calculator, you can enter your income, age, and family size to estimate your eligibility for subsidies and how much you could spend on…

  • More Than 6 in 10 of the Remaining 27.4 Million Uninsured People in the U.S. are Eligible for Subsidized ACA Marketplace Coverage, Medicaid or the Children’s Health Insurance Program

    News Release

    Recent policy attention has focused on efforts to reduce the number of uninsured people in the U.S. by expanding eligibility for coverage assistance, including enhanced premium subsidies in the Affordable Care Act (ACA) Marketplace and filling the Medicaid “coverage gap.” A new KFF analysis shows that a majority of the 27.4 million people who remained uninsured in 2020 already are eligible for financial assistance for coverage through Medicaid/CHIP or the Marketplace, suggesting that policies in…

  • Declines in Uncompensated Care Costs for The Uninsured under the ACA and Implications of Recent Growth in the Uninsured Rate

    Issue Brief

    The increase in the uninsured rate in recent years, as well as loss of coverage during the pandemic, has led to attention on the consequences of being uninsured. The need for medical care to test, treat, or prevent COVID-19 has also highlighted the potential consequences of uncompensated care for uninsured people. Uncompensated care costs occur because, although people who are uninsured use less care than people with coverage, most who are uninsured have limited income…

  • Sources of Payment for Uncompensated Care for the Uninsured

    Issue Brief

    This brief estimates the level of public funding that was paid to help offset providers’ uncompensated care costs for the uninsured in 2017. To conduct the analysis, we rely on several secondary data sources including government budget appropriations and expenditure data for major public programs that provided funds to cover the cost of care for the uninsured, as well as analyses of secondary data sources completed by others.

  • Analysis Estimates 5.1 Million People Fall into the Affordable Care Act’s “Family Glitch”

    News Release

    A new KFF analysis estimates 5.1 million people nationally fall into the Affordable Care Act’s “family glitch” that occurs when a worker receives an offer of affordable employer coverage for themselves but not for their dependents, making them ineligible for financial assistance for marketplace coverage. The so-called glitch occurs because the ACA prohibits people with an offer of affordable employer coverage from purchasing subsidized coverage through the ACA marketplace. Under current rules, the affordability of…

  • Health Spending for 60-64 Year Olds Would Be Lower Under Medicare Than Under Large Employer Plans

    Issue Brief

    During the presidential campaign, President Biden proposed to lower the age of Medicare eligibility from 65 to 60. This analysis uses claims data for covered medical services from both large employer plans and traditional Medicare to illustrate the potential spending effects of using Medicare payment rates in lieu of higher rates paid by employer plans for people 60-64 who shift from large employer plans to Medicare.

  • Filling the Coverage Gap: Policy Options and Considerations

    Issue Brief

    This issue brief examines some of the other options policymakers may consider to extend coverage to people in the gap, including increased fiscal incentives for states, a narrower public option, and making people with incomes below the poverty level eligible for enhanced ACA premium subsidies.

  • Lowering the Age of Medicare Eligibility Would Likely Reduce Health Spending for Employers, But Raise Costs for the Federal Government by Covering More People in Medicare

    News Release

    Two new KFF analyses find that lowering the age of Medicare eligibility from 65 to 60 could significantly reduce health spending for employers, who could potentially pass savings to employees in the form of lower premiums or higher wages. Additionally, per person health spending for older adults who move from employer coverage on to Medicare would likely be lower, though such moves would shift costs to taxpayers and increase Medicare program expenditures overall. President Biden…