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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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  • Comparison of Medicare Provisions in Recent Bills and Proposals to Repeal and Replace the Affordable Care Act

    Issue Brief

    Repealing and replacing the Affordable Care Act is a top priority of the Trump Administration and the Republican leadership, which could have implications for the Medicare program. This brief provides a side-by-side comparison of the Medicare-related provisions in six bills and proposals that would repeal the ACA, excluding proposals that would not directly affect Medicare.

  • Insurance Coverage Changes for People with HIV Under the ACA

    Issue Brief

    This brief provides the first national estimates of changes in insurance coverage among people with HIV since the implementation of the ACA. We find that coverage increased significantly for people with HIV due to the ACA’s Medicaid expansion; indeed, increased Medicaid coverage in expansion states drove a nationwide increase in coverage for people with HIV.

  • The Affordable Care Act’s Little-Noticed Success: Cutting the Uninsured Rate

    From Drew Altman

    This column was published as a Wall Street Journal Think Tank column on October 12, 2016. U.S. Uninsured Rate is At An All-Time Low, But The Public Doesn’t Know It Donald Trump derided the Affordable Care Act in the second presidential debate as a “total disaster.” One inarguable success of the 2010 health-care law has been to drive the rate of uninsured Americans to a historic low. That sizeable shift makes it significant that a plurality of the…

  • Key Data on Health and Health Coverage in South Carolina

    Fact Sheet

    This fact sheet draws on data from “Health and Health Coverage in the South: A Data Update” to highlight findings for South Carolina. The findings show the current status of health and health coverage in the state and the potential coverage gains that may be achieved through the Affordable Care Act.

  • Outreach and Enrollment Strategies for Reaching the Medicaid Eligible but Uninsured Population

    Issue Brief

    This brief identifies a range of successful strategies to reach and enroll Medicaid- and CHIP-eligible individuals as well as options to facilitate renewals. It draws on a collection of previous work examining state enrollment experiences after implementation of the ACA. In sum, it shows that states that have achieved enrollment success have embraced an array of strategies and approaches that include promoting the expansion through strong leadership and collaboration, implementing broad marketing and outreach campaigns,…

  • How has the ACA Medicaid Expansion Affected Providers Serving the Homeless Population: Analysis of Coverage, Revenues, and Costs

    Issue Brief

    To further understand how the first full year of Medicaid expansion has affected patients who are homeless and the providers who care for them, this analysis uses data from the Uniform Data System (UDS) for health centers to examine changes in insurance coverage, revenues and costs among Health Care for the Homeless (HCH) projects serving the homeless population.

  • Is ACA Coverage Affordable for Low-Income People? Perspectives from Individuals in Six Cities

    Issue Brief

    This brief presents findings from focus groups with low-income Medicaid and Marketplace enrollees in six cities: Baltimore, MD; Columbus, OH; Oakland, CA; Richmond, VA; St. Louis, MO; and Tampa, FL. It explores their experiences signing up for coverage; their perceptions of whether the costs they pay for their coverage are affordable; their experiences accessing care; and the impact of out-of-pocket costs on their ability to get needed care. It provides insights into the ongoing financial…