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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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  • Medicare-for-All vs. Single Payer: The Impact of Labels

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, “Medicare-for-All vs. Single Payer: The Impact of Labels”, Drew Altman uses new polling on a Medicare-for-all or single payer health system to explain how what you call a health reform plan can substantially affect the public’s response. All previous Drew Altman columns are online.

  • New Analysis Suggests ACA Marketplace Enrollment Could Grow Modestly Over Next Few Years, up to 16.3 Million Sign-Ups, 14.7 Million Enrollees after Attrition

    News Release

    A new analysis from the Kaiser Family Foundation finds that sign-ups in Affordable Care Act marketplace plans could continue to grow modestly over the next few years to 16.3 million (up 28%), based on the experience of the top-performing states. Assessing ACA Marketplace Enrollment examines factors that may have kept enrollment in 2016 from reaching early projections, including smaller declines than expected in employer coverage and a substantial number of people buying their own insurance…

  • Are Uninsured Adults Who Could Gain Medicaid Coverage Working?

    Fact Sheet

    As additional states consider whether to implement the ACA Medicaid expansion, some have raised pursuing waiver authority to tie Medicaid eligibility for adults under the expansion to work requirements. This fact sheet profiles uninsured adults who could gain Medicaid coverage under the ACA by their relationship to the workforce and job-based coverage.

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Kentucky, 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 Kentucky are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Missouri, 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 Missouri are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Arizona, 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 Arizona are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Idaho, 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 Idaho are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Massachusetts, 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 Massachusetts are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in Mississippi, 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 Mississippi are eligible for Medicaid or financial assistance in…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in New Jersey, 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 Jersey are eligible for Medicaid or financial…