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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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  • How Will the Uninsured in New York Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in New York, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in New York are eligible for Medicaid or financial…

  • How Will the Uninsured in South Carolina Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in South Carolina, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in South Carolina are eligible for Medicaid or financial…

  • How Will the Uninsured in South Dakota Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in South Dakota, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in South Dakota are eligible for Medicaid or financial…

  • How Will the Uninsured in Virginia Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Virginia, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Virginia are eligible for Medicaid or financial assistance in…

  • An Introduction to Medicaid and CHIP Eligibility and Enrollment Performance Measures

    Issue Brief

    The Centers for Medicare & Medicaid Services (CMS) recently established 12 new Medicaid and CHIP eligibility and enrollment performance indicators for states to report beginning in October 2013. These indicators provide insight into the performance of new eligibility and enrollment policies established under the Affordable Care Act (ACA). In December 2013, CMS released initial reports for a subset of the indicators. This brief provides an overview of the new performance indicators; the initial data; and…

  • Coverage for Abortion Services and the ACA

    Issue Brief

    This issue brief, Coverage of Abortion Services and the Affordable Care Act (ACA), summarizes the major coverage provisions of the ACA that are relevant for women of reproductive age, reviews current federal and state policies on Medicaid and insurance coverage of abortion services as they relate to the ACA, and presents national and state estimates on the availability of abortion coverage for women who are newly eligible for Medicaid or private coverage through the Marketplaces…

  • Explaining Health Care Reform: Risk Adjustment, Reinsurance, and Risk Corridors

    Issue Brief

    This brief explains three provisions of the Affordable Care Act (ACA) – risk adjustment, reinsurance, and risk corridors – that were intended to promote insurer competition on the basis of quality and value and promote insurance market stability, particularly in the early years of reform as the ACA marketplaces, also known as exchanges, were established.

  • The Affordable Care Act in California: Briefing and Panel Discussion

    Event Date:
    Event

    In the first of many events to highlight Affordable Care Act (ACA) implementation in the states and on the front lines across the country, the Kaiser Family Foundation partnered with the Blue Shield of California Foundation to examine ACA implementation in California (CA) at a Washington, D.C., briefing and panel discussion on February 19, 2014. State and county officials, experts and advocates discussed the latest developments and lessons learned about the ACA implementation in California, a…

  • Health Care Access and Coverage for the Lesbian, Gay, Bisexual, and Transgender (LGBT) Community in the United States: Opportunities and Challenges in a New Era

    Perspective

    This Policy Insight looks at the challenges and questions surrounding recent policy changes that are expected to increase health insurance coverage and access to care for lesbian, gay, bisexual and transgender (LGBT) individuals and their families, including the impact of the Affordable Care Act (ACA) and the Supreme Court's DOMA decision.