Affordable Care Act

The ACA MarketplaceS

Change in February effectuated enrollment, by state, 2025-2026

How Has ACA Marketplace Enrollment Changed Across States in 2026?

ACA Marketplace enrollment fell this year in every state except New Mexico, which was the only state to fully replace the enhanced premium tax credits that expired last year with a state-funded subsidy, according to a new KFF analysis of effectuated enrollment data. The Marketplace enrollment decline—the first in seven years—follows several years of rapid enrollment growth and coincides with the end of the enhanced federal subsidies.

How Much and Why ACA Marketplace Premiums Are Going Up in 2027

ACA Marketplaces insurers are proposing a median premium increase of 15% in 2027, according to KFF’s updated analysis of 276 insurers with publicly available filings across all 50 states and the District of Columbia. This is the second consecutive year of double-digit premium hikes. Last year’s median nationwide proposed rate change was 18%, and the median finalized rate change was 20%. While this proposed rate change is lower than last year, it represents the second-highest requested rate change since 2018, as premium growth had been relatively flat in this market for several years.

About the ACA

Promotional image for KFF video How Affordable is the Affordable Care Act

Did the Affordable Care Act Make Health Care More Affordable?

The expiration of the ACA’s enhanced premium tax credits at the start of 2026, combined with rising insurer premiums, put a spotlight on health care affordability that extends beyond Marketplace enrollees. KFF’s Cynthia Cox examines the ACA’s record and the broader underlying question it raises: what’s a fair price for Americans people to pay for health care?

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  • Access to Care for the Insured and Remaining Uninsured: A Look at California During Year One of ACA Implementation

    Issue Brief

    California is a bellwether state for understanding the impact of the Affordable Care Act (ACA). Much attention has been paid to enrollment in California's new coverage options, such as the Medicaid expansion (Medi-Cal) and plans sold through ACA marketplaces (Covered California), and to changes in the uninsured from 2013 to 2014. However, less is known about how this coverage has affected people’s access to care and financial security, and why others remain uninsured. This report,…

  • Medicare-for-All’s Popularity May Have Peaked

    From Drew Altman

    In this Axios column, Drew Altman looks at the polling trend on support for Medicare-for-all suggesting it may have crested as criticism has mounted. He considers what it means for the Democratic primary and continued debate for Medicare-for-all and other expansion proposals.

  • HIV, Intimate Partner Violence (IPV), and Women: An Emerging Policy Landscape

    Issue Brief

    Intimate partner violence has been shown to be associated with increased risk for HIV among women, as well as poorer treatment outcomes for those already diagnosed. This brief reviews the link between IPV and HIV, key policy changes and initiatives that attempt to address these challenges.

  • Sexually Transmitted Infections (STIs): An Overview, Payment, and Coverage

    Fact Sheet

    More people have health insurance than ever before under the Affordable Care Act (ACA), which emphasizes preventive care, including no-cost HIV and STI counseling and screening for recommended populations. This fact sheet examines trends and disparities in STI prevalence, reviews the STI screening and preventive care coverage policies for private insurance and public programs, and discusses coverage gaps and confidentiality concerns in the provision of these services.

  • Tracking Public Opinion on National Health Plan: Interactive

    Interactive

    This interactive allows users to track public opinion on a national health plan using all nationally representatives polls conducted since 2016, with further analysis of how favorability toward such a plan may differ based on political party identification and question wording.

  • A Conversation with Washington Gov. Inslee and Colorado Gov. Polis on the Public Option in Their States

    Event Date:
    Event

    On Friday, Feb. 7, KFF hosted a conversation with Colorado Gov. Jared Polis and Washington State Gov. Jay Inslee about their states’ efforts to establish a public health insurance option and make other changes to address health costs and access. The two governors have made health reforms a key part of their agendas and are seeking to expand access to affordable coverage for their residents through a public option – an approach that some national…

  • Health Issues and the Election Quiz

    Feature

    Test your knowledge about health facts, policy issues and proposals that are emerging among the 2020 presidential candidates. The 10 questions focus on health issues in the 2020 election, including: health care costs, prescription drug prices, the Affordable Care Act and changes in health insurance coverage, reproductive health, and Medicare-for-all and public option proposals.

  • Medicaid and Children’s Health Insurance Program Provisions in the New Health Reform Law

    Issue Brief

    This brief compares the Medicaid and Children's Health Insurance Program provisions in the new health reform law with pre-reform law governing those programs. The analysis focuses on Medicaid coverage and financing changes; how Medicaid and CHIP will interface with a new health insurance exchange and other Medicaid benefits and access changes. Overall, the new law includes an individual requirement to obtain health insurance, a significant Medicaid expansion and subsidies to help low-income individuals buy coverage…