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Affordable Care Act

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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  • Snapshots: Comparison of Expenditures in Nongroup and Employer-Sponsored Insurance: 2004-2007

    Issue Brief

    Data from the insurance industry and reviews of premiums offered through on-line sellers show that premiums for nongroup health insurance are lower than premiums reported on national surveys for employer-sponsored health insurance (ESI).  This paper uses pooled data from the 2004 through 2007 Medical Expenditure Panel Survey to compare the insurance payments for and out-of-pocket payments by people with nongroup health insurance and people with ESI.  While premiums for non-group coverage are lower than ESI…

  • Oral Histories: Report from a Dental Fair

    Video

    This video profiles patients attending a dental fair in rural Virginia and highlights the impact of lack of coverage for oral health services. Uninsured adults have vast oral care needs, and untreated dental problems can have serious health, employment and social consequences.

  • Kaiser Health Tracking Poll: Support for Health Reform Law Dips in October

    Perspective

    After remaining roughly evenly split for most of the last year and a half, this month’s tracking poll found a higher share of the public expressing negative views towards the health reform law. About half (51 percent) say they have an unfavorable view of the Patient Protection and Affordable Care Act (ACA), while 34 percent have a favorable view, a low point in Kaiser polls since the law was passed. While Democrats continue to be substantially…

  • KFF April Tracking Poll: Opinions of Reform Remain Steady

    Perspective

    This month, public opinion on the health reform law continues to be remarkably steady. The April Kaiser Health Tracking Poll finds that four in ten feel favorably about the law and an equal share say they feel unfavorably. In recent months there has been a slight decline in the share with an unfavorable view of the law, with a corresponding uptick in the share who offer no opinion on the law. The rise in those…

  • Explaining Health Reform: How will the Affordable Care Act affect Small Businesses and their Employees?

    Fact Sheet

    Several provisions of the Affordable Care Act (ACA) will likely have significant effects on small businesses, their employees, and families. Currently, smaller businesses are less likely to offer health insurance coverage to their employees than larger companies: 57% of small businesses with 50 or fewer workers offered health benefits to employees, compared to 92% of businesses with 51 to 100 workers, and 97% of businesses with 101 or more workers in 2011.1  This fact sheet explains…

  • What Do They Mean When They Talk About Pre-Existing Health Conditions?

    Perspective

    One health care issue about which the presidential candidates acknowledge they have differences is how the health care system should treat people with pre-existing health conditions. People who have a health condition (such as an illness or pregnancy) or who are at higher than average risk of needing health care are referred to as having a pre-existing health condition. The insurance reform provisions of the Affordable Care Act (ACA), when they take effect in 2014, will…

  • The Numbers Behind “Young Invincibles” and the Affordable Care Act

    Perspective

    As enrollment statistics in the new health insurance marketplaces start to become available, there is a growing focus on whether the enrollment of so-called “young invincibles” will be sufficient to keep insurance markets stable. Enrollment of young adults is important, but not as important as conventional wisdom suggests since premiums are still permitted to vary substantially by age. Because of this, a premium “death spiral” is highly unlikely. Why does the age distribution of enrollees…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Kentucky, 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 Kentucky are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Alaska, 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 Alaska are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Colorado, 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 Colorado are eligible for Medicaid or financial assistance in…