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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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  • Many Women Use Preventive Services, but Gaps in Awareness of Insurance Coverage Requirements Persist: Findings from the 2022 KFF Women’s Health Survey

    Issue Brief

    This brief presents findings from the 2022 KFF Women’s Health Survey on women’s receipt of cancer screenings and other preventive services and differences between subgroups of women. We also present data on women’s and men’s awareness of federal requirements for private insurance coverage of preventive services.

  • Health Insurer Financial Performance in 2024

    Issue Brief

    This analysis of trends in health insurers’ financial data shows that insurers’ gross margins per enrollee dipped slightly in 2024 across four markets, remaining highest in the Medicare Advantage market, followed by the individual (non-group) market, the fully insured group (employer) market, and Medicaid managed care. The analysis also examines insurers’ medical-loss ratios across the four markets.

  • Medicare Advantage Insurers Report Much Higher Gross Margins Per Enrollee Than Insurers in Other Markets

    News Release

    A new analysis of health insurers’ 2021 financial data shows that insurers continue to report much higher gross margins per enrollee in the Medicare Advantage market than in other health insurance markets. The analysis examines insurers’ financial data in the Medicare Advantage, Medicaid managed care, individual (non-group), and fully insured group (employer) markets.

  • Standardized Plans in the Health Care Marketplace: Changing Requirements

    Issue Brief

    This brief examines the evolving requirements for insurers on HealthCare.gov to offer standardized plans that follow set cost sharing rules for covered benefits in addition to other plans they might offer. It also reviews how some state-run marketplaces have used standardized plans to limit cost sharing for insulin, mental health care, and other services.

  • 2024 Medical Loss Ratio Rebates

    Issue Brief

    Insurers estimate they will pay $1.1 billion in Medical Loss Ratio (MLR) rebates in 2024 to select individuals and employers that purchase their health coverage, according to a KFF analysis of preliminary data reported to state regulators. The estimated rebate for 2024 is larger than rebates issued in most prior years. Nearly $12 billion in rebates have been issued since 2012.

  • Where President-elect Donald Trump Stands on Six Health Care Issues

    Issue Brief

    Where does President-elect Donald Trump stand on key health care issues? This snapshot outlines his positions and policy statements during the campaign on issues such as health insurance, the ACA, Medicaid, Medicare, the opioid epidemic, prescription drug costs, and women's reproductive health.

  • After the Election, the Public Remains Sharply Divided on Future of the Affordable Care Act

    News Release

    Among Those Who Favor Repeal, Arguments About Loss of Coverage for Those with Pre-Existing Conditions Can Sway Some Opinions Many Obamacare Provisions Remain Broadly Popular Across Party Lines, But Not its Mandate The first Kaiser Health Tracking Poll since the 2016 election finds that Americans are largely divided on the future of the Affordable Care…

  • Improving the Affordability of Coverage through the Basic Health Program in Minnesota and New York

    Issue Brief

    To date, Minnesota and New York are the only states to have adopted a Basic Health Program (BHP), an option in the Affordable Care Act (ACA) that permits state-administered coverage in lieu of marketplace coverage for those with incomes below 200% of the federal poverty level (FPL) who would otherwise qualify for marketplace subsidies. BHP covers adults with incomes between 138-200% of FPL and lawfully present non-citizens with incomes below 138% FPL whose immigration status makes them ineligible for Medicaid. This brief reviews Minnesota’s and New York’s approaches to BHP and assesses BHP’s impact on consumers, marketplaces, and state costs. Although there is uncertainty around the future of the ACA (including BHP) following the 2016 election, BHP implementation offers important lessons for consideration in future reforms about structuring coverage programs for low-income uninsured consumers.

  • Pre-existing Conditions and Medical Underwriting in the Individual Insurance Market Prior to the ACA

    Issue Brief

    This brief reviews medical underwriting practices by private insurers in the individual health insurance market prior to 2014, and estimates how many American adults could face difficulty obtaining private individual market insurance because of a pre-existing condition if the Affordable Care Act (also known as Obamacare) were repealed or amended and such practices resumed.