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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

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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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  • A Guide to the Supreme Court’s Decision on the ACA’s Medicaid Expansion

    Issue Brief

    On June 28, 2012, the U.S. Supreme Court issued its decision in the case challenging the Affordable Care Act (ACA). The Court upheld the constitutionality of the ACA's individual mandate, which requires most people to maintain a minimum level of health insurance coverage beginning in 2014. A majority of the Court also found the ACA's Medicaid expansion unconstitutionally coercive of states, while a different majority of the Court held that this issue was fully remedied…

  • Explaining Health Reform: Medicare and the New Independent Payment Advisory Board

    Issue Brief

    This brief describes how the new board created under the 2010 health reform law is expected to limit the growth in Medicare spending over time. Starting in 2014, if projected per capita Medicare spending exceeds targets set in the law, the board must recommend ways to reduce Medicare spending, while maintaining quality and access to care for beneficiaries. The board’s recommendations automatically take effect the next year unless Congress adopts an alternative plan to achieve…

  • Summary of Coverage Provisions in the Patient Protection and Affordable Care Act

    Issue Brief

    This short summary describes the health coverage provisions contained in the final version of the Affordable Care Act signed into law in March 2010, including the individual mandate requirements, expansion of public programs, health insurance exchanges, changes to private insurance and employer requirements.

  • Explaining Health Reform: Key Changes in the Medicare Advantage Program

    Issue Brief

    This brief examines the changes in the 2010 health reform law affecting the Medicare Advantage program, which gives beneficiaries the option of enrolling in private insurance plans for their Medicare benefits, instead of the traditional fee-for-service program. The reform law will gradually reduce Medicare payments to these plans to bring the average payment closer to the costs of traditional fee-for-service Medicare, while rewarding plans with high-quality ratings. The brief also describes new benefit requirements for…

  • How Popular is the Idea of Repealing Health Reform?

    Poll Finding

    With a number of this fall’s candidates for public office advocating an overturn of the new health reform law, this Data Note takes a closer look at the variety of polls that have attempted to measure the public’s support for repeal. Data Note (.pdf) For an updated look on Americans' views on repealing the Affordable Care Act, see: The Public, Health Care Reform, and Views on Repeal January 2011

  • Key Issues to Consider for Outreach and Enrollment Efforts under Health Reform

    Issue Brief

    The Affordable Care Act will significantly expand health coverage opportunities through an expansion in Medicaid and the creation of new health insurance exchanges in 2014. Effective outreach and enrollment efforts will be vital for assuring the expansions translate into increased coverage. Based on a discussion with federal and state officials and experts, this report identifies key issues to consider with regard to outreach and enrollment under reform. The discussion was part of an ongoing series…

  • The Cost and Coverage Implications of the ACA Medicaid Expansion: National and State-by-State Analysis

    Report

    A central goal of the Patient Protection and Affordable Care Act (ACA) is to significantly reduce the number of uninsured by providing a continuum of affordable coverage options through Medicaid and new Health Insurance Exchanges. Following the June 2012 Supreme Court decision, states face a decision about whether to adopt the Medicaid expansion. These decisions will have enormous consequences for health coverage for the low-income population. This analysis uses the Urban Institute’s Health Insurance Policy…

  • Addressing Disparities in Health and Health Care — Issues for Reform

    Event

    Marsha Lillie-Blanton, Dr.P.H., Kaiser senior advisor on race, ethnicity and health care, testified before the House Ways and Means Health Subcommittee about the role of health insurance in reducing disparities in health care and in health status. The testimony is part of an ongoing health reform hearing series. Testimony (.pdf) Slides (.ppt)

  • Pulling it Together: The Health Care Industry’s Second Voluntary Effort

    Perspective

    The announcement that health care industry groups plan to put on the table voluntarily a package of proposals to shave $2 trillion off the rate of increase in health spending over the next ten years immediately conjures up the image of the Voluntary Effort or VE launched with similar fanfare in the Carter administration.  Back then the industry used the VE to fend off Jimmy Carter's efforts to aggressively control the costs of hospital care…

  • Pulling it Together: Seniors and Health Reform

    Perspective

    It is widely believed that seniors are antsy about the new health reform law. And there is heightened interest in how seniors feel about the law in the political world because they are more likely to vote in midterm elections.  About 48% of the electorate said they voted in the 2006 midterms while about 63% of seniors said the same.  Our June and July tracking polls shed light on seniors’ views on health reform and…