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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

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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  • JAMA Forum: Why the Ruckus Over the Cadillac Plan Tax?

    Perspective

    Larry Levitt’s October 2015 post explains the terms of the much-debated Cadillac plan tax, how it is designed to reduce health costs, and how it could end up shifting more costs to workers.

  • How Have Insurers Fared Under the Affordable Care Act?

    Perspective

    This analysis tracks the financial performance of insurers in the individual market by evaluating trends in the medical loss ratio (MLR) in the pre-ACA landscape from 2010 to 2013 and estimates the MLR for the first full year of Affordable Care Act implementation in 2014. Findings suggest that although performance varied among insurers, insurers overall had roughly comparable financial performance in 2014 as in recent prior years.

  • Updated for 2015: Tool Displays By Locality the Share of Potential ACA Federal Marketplace Enrollees That Signed Up

    News Release

    An interactive tool from the Kaiser Family Foundation is now updated with 2015 data, allowing users to view on a local level the share of potential enrollees who signed up for a health plan in a federally-based marketplace under the Affordable Care Act. With Mapping Marketplace Enrollment, users can also compare the number of potential and actual enrollees – and the percentage that signed up for a plan -- in 2014 and 2015 within 100,000-resident…

  • How Have State Medicaid Expansion Decisions Affected the Experiences of Low-Income Adults? Perspectives from Ohio, Arkansas, and Missouri

    Issue Brief

    This brief examines the experiences of low-income adults in three states that have made varied Medicaid expansion decisions: Ohio, which adopted the ACA Medicaid expansion, Arkansas which implemented the Medicaid expansion through a “Private Option” waiver, and Missouri, which has not adopted the expansion. While Arkansas and Ohio implemented the expansion in different ways, participants in both states described how obtaining coverage improved their ability to access care, contributing to improvements in their ability to…

  • Medicaid Expansion Spending and Enrollment in Context: An Early Look at CMS Claims Data for 2014

    Issue Brief

    This issue brief analyzes spending and enrollment data made available by CMS through the MBES. It breaks out spending and enrollment for the new adult group (Group VIII) that gained coverage in states that adopted the ACA Medicaid expansion. It looks at spending and enrollment for the new adult group in calendar year 2014, putting such data in the context of overall Medicaid spending and enrollment and examines trends across expansion states.

  • Health Insurance Marketplace Calculator Updated for 2016

    News Release

    The Kaiser Family Foundation's Health Insurance Marketplace Calculator is now updated to include local data on 2016 health plans that are being sold through the Affordable Care Act marketplaces. The Spanish-language version of the calculator is also updated.

  • On Health Care Issues, Voters Give Hillary Clinton a Substantial Edge Over Donald Trump  

    News Release

    Most Americans Worry about Large Number of Zika Cases in U.S. Over Next Year While the public tilts narrowly toward unfavorable views of the Affordable Care Act, presumptive Democratic nominee Hillary Clinton holds a clear advantage on health care issues over presumptive Republican nominee Donald Trump as the 2016 national political conventions approach, and voters generally, including independents, favor Democrats on health issues, the latest Kaiser Health Tracking Poll finds. When asked which of the…

  • How ACA Marketplace Premiums Measure Up to Expectations

    Perspective

    Premium increases in the health insurance marketplaces created under the Affordable Care Act (ACA) will likely be higher in 2017 than in recent years; however, the actual average benchmark premium in the ACA marketplaces in 2016 is below what the Congressional Budget Office projected for 2016 before the health law was passed. How actual marketplace premiums compare to what CBO expected in doing those budget projections is an important factor in determining whether the ACA…