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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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  • A Guide to Understanding Medicaid Expansion Waivers as States Debate What to Do Under the ACA

    News Release

    With the recent governors’ elections in Kentucky and Louisiana refocusing attention on state Medicaid expansion decisions, a newly updated issue brief from the Kaiser Family Foundation provides an overview of the waivers obtained by six states – Arkansas, Iowa, Michigan, Indiana, New Hampshire and Montana -- that are pursuing alternative Medicaid expansions under the Affordable Care Act.

  • Covering the Remaining Uninsured: Not Just a Red-State Issue

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman explains why covering the nation’s remaining uninsured population is more than just a red state issue. All previous columns by Drew Altman are available online.  

  • Medicare Advantage Hospital Networks: How Much Do They Vary?

    Report

    This report takes an in-depth look at Medicare Advantage plans’ hospital networks. The analysis draws upon data from 409 Medicare Advantage plans serving beneficiaries in 20 diverse counties that together accounted for about one in seven (14%) Medicare Advantage enrollees nationwide in 2015. The report examines the size and composition of plans’ hospital networks, the variation across counties, the inclusion of Academic Medical Centers and NCI-Designated Cancer Centers, and the relationship between network size and…

  • Updated Infographic Explains New Federal Regulations on Contraceptive Coverage

    News Release

    A newly-updated infographic from the Kaiser Family Foundation explains the final regulations on employer-based coverage of birth control released today by the U.S. Department of Health & Human Services. How Does Where You Work Affect Your Contraceptive Coverage? provides a clear explanation of coverage requirements under the new regulations for employers with religious objections to contraceptive coverage, including houses of worship, religiously-affiliated nonprofits and closely-held for-profit corporations. A related summary, also updated to reflect the new regulations,…

  • Overview of Medicaid Per Capita Cap Proposals

    Issue Brief

    The House Republican Plan (“A Better Way”) released on June 22, 2016, includes a proposal to convert federal Medicaid financing from an open-ended entitlement to a per capita allotment or a block grant (based on a state choice). This proposal is part of a larger package designed to replace the Affordable Care Act (ACA) and reduce federal spending for health care. Often tied to deficit reduction, proposals to convert Medicaid’s financing structure to a per…

  • Two Year Trends in Medicaid and CHIP Enrollment Data: Findings from the CMS Performance Indicator Project

    Issue Brief

    This brief provides an overview of recent trends in Medicaid and CHIP enrollment as of January 2016, based on data from the Centers for Medicare and Medicaid Services (CMS) produced as part of its Performance Indicator Project. The project was designed to provide timely data on Medicaid and CHIP eligibility and enrollment that are intended to help strengthen data-driven program management and oversight efforts at both the national and state level. They also provide insight…