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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  • Premium Assistance in Medicaid and CHIP: An Overview of Current Options and Implications of the Affordable Care Act

    Issue Brief

    Premium assistance is the use of public funds through Medicaid or the Children’s Health Insurance Program (CHIP) to purchase private coverage. States have pursued premium assistance with varied objectives, including covering parents not otherwise eligible for public coverage and promoting the use of private coverage. Implementation of the Affordable Care Act (ACA) coverage expansions is likely to spark renewed interest in premium assistance options. This brief provides an overview of premium assistance options and examines…

  • Optimizing Medicaid Enrollment: Spotlight on Technology – Louisiana’s Express Lane Eligibility

    Issue Brief

    This piece looks at how Louisiana uses “express lane eligibility" to increase and streamline the enrollment of low-income children in its Medicaid program. It is the first in a Spotlight on Technology series profiling several states' innovative applications of technology to Medicaid enrollment efforts. The series illustrates a range of approaches that states can adopt to improve their systems now and to prepare for the expansion of Medicaid under health reform. Spotlight (.pdf)

  • September Kaiser Health Tracking Poll: Pre-Existing Conditions

    Perspective

    With several elements of the ACA targeted toward individuals with pre-existing conditions, this month’s Kaiser Health Tracking Poll takes a closer look at this group. Fifty-two percent of Americans say that they or someone else in their household has what would be considered a “pre-existing condition,” and among this group, one in five (21 percent) say they or their family member has had difficulty getting health insurance because of this condition. Yet many of these people…

  • Questions About Essential Health Benefits

    Perspective

    The Institute of Medicine (IOM) recently issued its long-awaited report on defining the essential health benefits under the Affordable Care Act (ACA). As expected, the committee preparing the IOM report did not recommend which specific services should be covered, but rather discussed what the process should be for defining the essential benefits, which all insurers selling coverage to individuals and small businesses will have to provide beginning in 2014. Somewhat unexpected was their recommendation to set a…