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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  • The Individual Mandate: How Sweeping?

    Perspective

    The so-called "individual mandate"  – the provision under the Affordable Care Act (ACA) that requires most individuals to carry a minimum level of insurance coverage and is now being considered by the Supreme Court – has emerged as the least popular element of the reform law and the prime target for its opponents. Yet in practice, the mandate may not be quite as far-reaching as the controversy over it suggests. The vast majority of Americans already…

  • Health Insurance Transparency under the Affordable Care Act

    Perspective

    In February, a final rule was issued implementing the Affordable Care Act (ACA) requirement that all health plans provide a uniform summary of coverage for all enrollees and applicants. The idea of providing easy-to-understand summaries of coverage is, in fact, the most popular provision in the ACA, according to a recent Kaiser tracking poll. That finding suggests powerful consumer frustration over the complexity of health insurance and the difficulty people face evaluating health insurance choices and understanding…

  • July Kaiser Health Tracking Poll: A Focus On The Mandate and the Medicaid Expansion in the Aftermath of the Supreme Court Decision

    Perspective

    This second July poll reports in further depth on public opinion about the Affordable Care Act (ACA) in the wake of the Supreme Court decision. The Supreme Court’s decision that the individual mandate was constitutional as a tax appears to have had little impact on opinion about the already largely unpopular requirement that most people have health coverage or potentially face a penalty. Sixty-six percent of the public view the mandate negatively when it is…

  • Is a Death Spiral Inevitable If There is No Mandate?

    Perspective

    If the Supreme Court acts within the next couple of weeks to overturn the individual mandate in the Affordable Care Act (ACA) while leaving the rest of the law intact, expect to hear a lot about how the individual insurance market will be destined for a "death spiral." When compared with implementing the ACA in full as planned, there's a consensus that eliminating the mandate would increase premiums and mean that far fewer of the…

  • How Small Business Owners Get Health Insurance

    Perspective

    As with any economic policy issue, there has been much discussion of how the Affordable Care Act (ACA) will affect small businesses. But, there’s been very little focus on how the health reform law will affect the owners of those businesses as people. As our recently released Employer Health Benefits Survey shows, small businesses are much less likely than larger businesses to offer health benefits to their workers. Half of businesses with 3-9 workers and…

  • Medicaid and Its Role in State/Federal Budgets & Health Reform

    Fact Sheet

    This chartpack from the Kaiser Commission on Medicaid and the Uninsured addresses five key questions about the Medicaid program. They include: What is Medicaid and what does it do? What does Medicaid cost and why? What is Medicaid's role in state budgets? What is Medicaid's role in the federal budget? What is Medicaid's role in health reform? Chartpack (.pdf) Related fact sheet: Medicaid and Its Role In State/Federal Budgets and Health Reform

  • The Language of Health Care Reform

    Perspective

    Published in the Jan. 19 edition of JAMA, this article from KFF Executive Vice President for Health Policy Larry Levitt lays out the major health policy challenges that will confront President-elect Biden and potential approaches to major reform.While a big reform debate may not be likely this year, one is likely coming as the nation will need to confront much higher costs than in other high-income countries, worse outcomes in many cases, tens of millions…

  • Opportunities and Resources to Expand Enrollment During the Pandemic and Beyond

    Issue Brief

    This analysis summarizes recent interviews with marketplace navigators and other consumer assistance professionals, who offered observations about the 2021 Open Enrollment period, discussed general and pandemic-specific challenges facing consumers seeking coverage, and offered suggestions to improve enrollment outcomes. The brief also reviews information about federal marketplace resources and spending priorities contained in Trump Administration budget documents, and possible sources of funding for a COVID-19 special enrollment period during the Biden administration. 

  • Nearly 9 Million Uninsured Americans Could Get Free or Subsidized Health Insurance if the Biden Administration Re-Opens ACA Marketplace Enrollment in Response to COVID-19

    News Release

    Four million uninsured people could get an ACA bronze plan with no premium payment and 4.9 million others could get subsidies to offset the cost of such a plan if the Biden Administration were to re-open ACA marketplace enrollment, a KFF analysis finds. Four million uninsured people could get an ACA bronze plan with no premium payment and 4.9 million others could get subsidies to offset the cost of such a plan if the Biden…

  • A Profile of Community Health Center Patients: Implications for Policy

    Issue Brief

    Community health centers are a key source of primary care in underserved areas. Their role will grow as coverage expands under the ACA. To sharpen understanding of the health center patient population, this brief compares them to the low-income population overall, using the Health Center Patient Survey and National Health Interview Survey. The pre-ACA profile of health center patients that emerges sets the stage for measuring change and highlights important implications of states’ Medicaid expansion…