Affordable Care Act

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.

New AND NOTEWORTHY

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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  • Health Care Issues in the Early Stages of the 2024 Election

    Perspective

    In this JAMA Health Forum column, Larry Levitt examines differences in the Republican presidential candidates’ records and positions on health issues, including Medicaid and abortion, that could play a role in the primaries and would set up a sharp contrast in the general election against President Biden.

  • Medical Debt: The Canary in the Coal Mine for Health Care Affordability

    Perspective

    With Vice President Harris promising to address medical debt as part of her economic plan, KFF Executive Vice President for Health Policy Larry Levitt explores why it is a symptom of the broader problem of affordable health care and reviews recent efforts to address it in this JAMA Health Forum post.

  • Fui a la farmacia para renovar mi receta y me enteré que mi cobertura de Medicaid había terminado. No recibí ningún aviso de Medicaid. ¿Qué hago ahora?

    FAQs

    Si ha perdido Medicaid pero cree que aún califica, comuníquese con su agencia de Medicaid. Si su cobertura terminó hace menos de 90 días, es posible que pueda enviar los formularios y documentos requeridos y restablecer su cobertura. En este caso, su cobertura será retroactiva a su fecha de baja. Si su cobertura terminó hace más de 90 días, es probable que deba volver a solicitar Medicaid. También puede solicitar un seguro médico privado a…

  • The Biden Administration’s Final Rule on Section 1557 Non-Discrimination Regulations Under the ACA

    Issue Brief

    This brief overviews the Biden Administration’s 2024 final rule implementing Section 1557 of the ACA, which is home to the law’s major nondiscrimination provisions. It provides a brief background on 1557 rulemaking and identifies key differences between this rule and the 2020 rule from the Trump Administration. It highlights two areas of growing interest impacted by the rule – nondiscrimination protections related to pregnancy and nondiscrimination protections for transgender people. Table 2 summarizes the major…

  • KFF Examines New Rule Giving LGBTQ+ People More Protections Against Discrimination in Health Care

    News Release

    A long-awaited new rule recently finalized by the Biden Administration gives LGBTQ+ people more protections against discrimination when seeking health care and coverage from a range of programs and organizations, including Medicaid, Medicare, Health Insurance Marketplaces, many health insurance plans, and most hospitals and providers. The rule has been subject to a wave of litigation across the Obama, Trump, and Biden Administrations and the Biden Administration's new rule reinstates protections eliminated by the Trump Administration.…

  • States with the Fastest Recent Growth in ACA Marketplace Coverage Started with High Uninsured Rates

    News Release

    The states with the fastest recent growth in ACA Marketplace signups also had among the highest uninsured rates previously, as enhanced subsidies helped to make coverage more affordable for many consumers, particularly in southern states that did not expand their Medicaid programs to cover low-income adults, a new KFF analysis finds. The enhanced premium subsidies were first provided in the American Rescue Plan Act in 2021 and then extended through 2025 in the Inflation Reduction Act.…

  • Claims Denials and Appeals in ACA Marketplace Plans in 2021

    Issue Brief

    This analysis of HealthCare.gov Marketplace insurers' transparency data finds that 17% of in-network claims were denied in 2021, with denial rates varying widely across insurers. Consumers appealed less than two-tenths of 1% of denied in-network claims.

  • Record ACA Marketplace Signups for 2024 Are Driven in Part by Medicaid Unwinding and More Affordable Coverage 

    News Release

    Enrollment in the Affordable Care Act (ACA) Marketplaces will hit another record high in 2024, with sign-ups to date topping 20 million—already 4 million above last year’s record high. The Medicaid unwinding, enhanced Marketplace subsidies that make coverage more affordable, as well as increased marketing, outreach, and enrollment assistance have all played a role in this growth, according to a new analysis from KFF. Marketplace sign-ups have nearly doubled since 2020. The Medicaid unwinding is…

  • Eliminating the Medicaid Expansion Federal Match Rate: State-by-State Estimates

    Issue Brief

    This analysis examines the potential impacts on states and Medicaid enrollees of eliminating the 90% federal match rate for the Affordable Care Act (ACA) expansion. Eliminating the federal match rate for adults in the Medicaid expansion could reduce Medicaid spending by nearly one-fifth ($1.9 trillion) over a 10-year period and up to nearly a quarter of all Medicaid enrollees (20 million people) could lose coverage.

  • Challenges with Effective Price Transparency Analyses

    Issue Brief

    Promoting price transparency in health care is a policy approach with bi-partisan support in Congress and the public at large. This analysis examines the vast troves of price transparency data that payers are required and finds unlikely prices, inconsistencies, and other oddities that pose major challenges for efforts to use it to promote competition and drive down prices.