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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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  • Women’s Health Quiz: Health Coverage and the Affordable Care Act

    Feature

    Health insurance coverage is a critical factor in making health care accessible to women—women with health coverage are more likely to obtain needed preventive, primary, and specialty care services. Test your knowledge of women’s health coverage and the effect of the Affordable Care Act on women with our ten-question quiz.

  • Testimony: Wellness Programs and Nondiscrimination Under Employer-Sponsored Group Health Plans

    Issue Brief

    This testimony by the Foundation's Karen Pollitz before the Equal Employment Opportunity Commission included background on wellness programs, wellness incentives and nondiscrimination since 1996, and questions and issues related to proposed regulations governing the design and application of wellness programs offered in conjunction with employer-sponsored group health plans.

  • Survey Finds Approximately 3.4 Million Previously Uninsured Adult Californians Obtained Coverage Since Start of the Affordable Care Act’s First Open Enrollment Period

    News Release

    Immigration Status and Fears Pose Challenges to Further Expanding Coverage Among Hispanics Affordability Key Obstacle to Enrollment for Those Who Remain Uninsured MENLO PARK, Calif. -- Nearly six in 10 (58%) previously uninsured Californians report getting health insurance since last summer, finds the second wave of the Kaiser Family Foundation's Longitudinal Panel Survey following the experiences of a randomly selected  panel of uninsured Californians under the Affordable Care Act (ACA). Based on official estimates of…

  • The Ohio Health Care Landscape

    Fact Sheet

    This fact sheet provides an overview of population health, health coverage, and health care delivery in Ohio under the Affordable Care Act (ACA).

  • 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.

  • The Health-Care Enrollment Story Is in the States

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Drew Altman examines the variation among states beneath the national Affordable Care Act’s Marketplace enrollment numbers released by the Department of Health and Human Services.

  • Market Share of Largest Insurance Carrier in the Individual Insurance Market, 2010

    Feature

    Market Share of Largest Insurance Carrier in the Individual Insurance Market, 2010 Download Source Kaiser Family Foundation analysis of 2010 insurer filings to the National Association of Insurance Commissioners and the California Department of Managed Health Care using the Mark Farrah Associates Health Coverage Portal TM. Market share was calculated as the percent of the state’s individual insurance market enrollment accounted for by each parent company (measured in member months)