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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

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  • Network Adequacy Standards and Enforcement

    Issue Brief

    Health plan networks affect patient access to care. This brief reviews options for setting and enforcing network adequacy standards and tools for making differences in plan networks more transparent.

  • 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.

  • The Future of Contraceptive Coverage

    Issue Brief

    This issue brief explains the Affordable Care Act's current contraceptive coverage rule, the impact it has had on women, and the state of contraceptive coverage if the rule is eliminated or modified.

  • Overview of Medicaid Per Capita Cap Proposals

    Issue Brief

    The House Republican Plan (“A Better Way”) released on June 22, 2016, includes a proposal to convert federal Medicaid financing from an open-ended entitlement to a per capita allotment or a block grant (based on a state choice). This proposal is part of a larger package designed to replace the Affordable Care Act (ACA) and reduce federal spending for health care. Often tied to deficit reduction, proposals to convert Medicaid’s financing structure to a per capita cap or block grant have been proposed before. Such changes represent a fundamental change in the financing structure of the program with major implications for beneficiaries, providers, states and localities. Key things to understand about a per capita cap include the following: how a per capita cap works, key design challenges, and implications of a per capita cap.