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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  • Medicaid Expansion Through Marketplace Premium Assistance

    Fact Sheet

    This fact sheet compares the two Medicaid premium assistance authorities (state plan option and demonstration waiver) and identifies key beneficiary protections in Medicaid expansion premium assistance programs.

  • 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)  

  • Translating The Medicaid Expansion Into Increased Coverage: The Role Of Application Assistance

    Event Date:
    Event

    Under the Affordable Care Act (ACA), beginning in 2014 all states will employ streamlined, technology-driven enrollment systems to help eligible people sign up for insurance affordability programs, including Medicaid, the Children's Health Insurance Program and the new health insurance exchange marketplaces. Even with these streamlined systems in place, application assistance will be important for helping to translate the ACA's Medicaid and other coverage expansions into increased coverage. The Kaiser Family Foundation's Commission on Medicaid and…

  • Medicare and the Federal Budget: Comparison of Medicare Provisions in Recent Federal Debt and Deficit Reduction Proposals

    Issue Brief

    This brief provides a side-by-side comparison of Medicare provisions included in broad-based packages to reduce the deficit and debt put forward by the President and the Chairmen of the House and Senate Budget Committees. In addition, this brief summarizes Medicare provisions included in other deficit- and debt- reduction proposals released since January 2012 and describes recent activities that pertain to Medicare and the federal budget, including Medicare’s role in the Affordable Care Act (ACA), the…

  • Optimizing Medicaid Enrollment: Perspectives on Strengthening Medicaid’s Reach Under Health Care Reform

    Issue Brief

    The health reform law creates a national plan for near-universal health coverage that relies on a large expansion of Medicaid eligibility as its foundation. This brief draws on recent interviews with Medicaid program directors and other experts about the opportunities that health reform presents to optimize Medicaid by strengthening its enrollment and renewal operations and recasting it as an affordable health coverage program for working people and families. Executive Summary (.pdf) Issue Brief (.pdf)

  • Liking the Pieces, Not the Package: Contradictions in Public Opinion During Health Reform

    Poll Finding

    Public opinion played a prominent role during the recent health care reform debate. In a published Health Affairs article, Kaiser researchers examine past and present polling and show that opinion tracked with historic patterns and was relatively stable, even if the contentious public debate suggested a volatile public mood in 2009 and 2010. Going forward, the public will begin reacting to reform implementation, primarily by judging it in terms of their perceptions of and experiences…

  • Medicaid Policy Options for Meeting the Needs of Adults with Mental Illness under the Affordable Care Act

    Issue Brief

    This paper examines the salient issues raised in a November 2010 roundtable discussion of national and state experts convened by the Kaiser Commission on Medicaid and the Uninsured, in partnership with the Bazelon Center for Mental Health Law, to discuss Medicaid policy options available under health reform to help meet the needs of adults with mental illness. The Patient Protection and Affordable Care Act will expand the Medicaid program, offering the opportunity to improve access…

  • Pulling It Together: Rising Health Costs Are Not Just a Federal Budget Problem

    Perspective

    Premiums for employer-provided health insurance, where 150 million Americans get their coverage, jumped 9% in 2011 while workers’ wages grew just 2%, according to our annual employer survey.  The average family policy now costs more than $15,000 per year, more than the cost of a Chevy Aveo or a Ford Fiesta.  Since we began doing this survey thirteen years ago, worker contributions to premiums have increased 168%, wages 50%, and inflation 38%. Critics of the…