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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

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  • Legal Analysis of the Supreme Court Ruling on Hobby Lobby

    Feature

    This chart looks at the U.S. Supreme Court decision in the Hobby Lobby case involving the Affordable Care Act's (ACA) contraceptive coverage requirement. It examines how the Court answered four key questions in the case.

  • What Worked and What’s Next? Strategies in Four States Leading ACA Enrollment Efforts

    Issue Brief

    This brief highlights the experiences of four states—Colorado, Connecticut, Kentucky, and Washington—that established a State-based Marketplace (SBM), implemented the ACA’s Medicaid expansion, and achieved success enrolling eligible individuals into coverage. Based on interviews with key stakeholders in each state, it identifies effective strategies that contributed to enrollment and current priorities looking forward.

  • Trends in Medicaid Spending Leading up to ACA Implementation

    Issue Brief

    This paper presents data on Medicaid spending during the years leading up to the implementation of the Affordable Care Act (ACA). It uses administrative data to first examine overall spending trends and trends by service type. We then draw on additional data to analyze per enrollee spending growth during this period, both by service type and by eligibility group, to understand what drove Medicaid spending.

  • New Reports Analyze Cost Sharing in 2015 ACA Marketplace Plans in 37 States

    News Release

    Charts Examine Savings from Subsidies at Stake in U.S. Supreme Court Case Cost-sharing subsidies under the Affordable Care Act can substantially reduce deductibles and other cost sharing for people with low incomes purchasing coverage in the federally-facilitated insurance marketplace serving 37 states, a new analysis by the Kaiser Family Foundation finds.

  • Are Uninsured Adults Who Could Gain Medicaid Coverage Working?

    Fact Sheet

    As additional states consider whether to implement the ACA Medicaid expansion, some have raised pursuing waiver authority to tie Medicaid eligibility for adults under the expansion to work requirements. This fact sheet profiles uninsured adults who could gain Medicaid coverage under the ACA by their relationship to the workforce and job-based coverage.

  • Medicare Spending Cuts and Hospital Productivity Gains

    News Release

    In his latest column for The Wall Street Journal's Think Tank, Drew Altman and guest co-author Dana Goldman examine hospital productivity gains, and what they may mean for hospitals’ ability to absorb spending reductions. All previous columns by Drew Altman are available online.