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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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  • Obamacare and You: If You Have Medicare…

    Fact Sheet

    This short explainer highlights some of the key information for people with Medicare about how Affordable Care Act, also known as Obamacare, may affect them.

  • Obamacare and You

    Fact Sheet

    Obamacare and You is a series of one-page papers explaining how the Affordable Care Act, also known as “Obamacare,” will affect different groups of people. Click on the links below to learn more: If You Are Uninsured  Haga clic para leer en español  If You Are Low-Income and May Qualify for Medicaid  Haga clic para leer en español If You Have a Pre-Existing Condition Haga clic para leer en español If You Buy Coverage in the Individual Market…

  • No Quick Verdict on Obamacare

    From Drew Altman

    This column originally appeared in Politico on September 30. Dr. Altman's future Politico columns will be posted on kff.org one day after publication. October 1, the focus of great attention in the Obamacare wars, is finally here. Today is the day open enrollment begins for the new health insurance marketplaces, where Americans can log on and sign up for coverage. The media, opponents, and proponents have been gearing up for a big day — or,…

  • Kaiser Family Foundation/NBC News Survey Questions

    Poll Finding

    The Kaiser Family Foundation partnered with NBC News to ask several survey questions of the U.S. public about their feelings towards the 2010 health care law, as well as their worries about affording health care more generally. These questions were asked as part of the September 2013 Kaiser Health Tracking Poll. Kaiser Family Foundation/NBC News Survey Topline Download

  • Kaiser Health Tracking Poll: September 2013

    Feature

    September 2013 Kaiser Health Tracking Poll gauges public opinion on the ACA days before open enrollment for Obamacare health insurance marketplaces begins.

  • How Obamacare May Be Holding Down Costs

    From Drew Altman

    In his latest column published in Politico, Kaiser President and CEO Drew Altman examines the recent historic slowdown in health-care costs and discusses whether Obamacare is a contributing factor.

  • First Wave of Major New Survey Project on California’s Uninsured

    News Release

    California’s Uninsured Struggle With Costs and Access And Say They Want Insurance, But Most Have Heard Little About The Affordable Care Act, And Many Who Are Likely To Be Eligible For Medi-Cal or Exchange Subsidies Don’t Know It Many Undocumented Immigrants in CA Think They Will Get Coverage Through the ACA But Won’t Menlo Park, Calif. – California’s uninsured are skipping medical care, struggling with costs and want coverage, but many report knowing little about…

  • California’s Uninsured on the Eve of ACA Open Enrollment

    Report

    This report presents the findings of a baseline survey of California’s uninsured adult population just before the start of the first open enrollment period under the Affordable Care Act (ACA). It will be followed by three other surveys over the course of the next two years that will capture the changing experiences and attitudes of this same group of 2,000 people over time, whether they obtain coverage or remain uninsured. The report analyzes the uninsured…