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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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  • New Analysis Shows States with Medicaid Expansion Experienced Declines in Uninsured Hospital Discharges

    Issue Brief

    Expanded health insurance coverage through the Affordable Care Act (ACA) is having a major impact on hospital payer mix across the country. Similar to other reports recently released, new data examining hospital discharges in 16 states with data through the second quarter in 2014 show increases in Medicaid and declines in uninsured or self-pay discharges in states that implemented the Medicaid expansion. These trends hold true for all hospital discharges as well as for specific…

  • New Tracker Monitors Affordable Care Act Preventive Services Coverage

    News Release

    The Affordable Care Act requires private insurance plans to cover recommended preventive services with no out-of-pocket charges for patients. This slate of covered services can change when the U.S. Preventive Services Task Force and other authorized groups add or modify recommendations; the federal government also periodically issues clarifications to guide health plans in their coverage. A new tracker from the Kaiser Family Foundation monitors the preventive services that must be covered for adults without cost sharing,…

  • The California Health Care Landscape

    Fact Sheet

    This fact sheet provides an overview of population health, health coverage, and the health care delivery system in California in the era of health reform.

  • The ‘Private Option’ Medicaid Expansion in Arkansas Has Helped Reduce the Uninsured Rate and Uncompensated Care Costs While Boosting the State’s ACA Marketplace

    News Release

    A new issue brief from the Kaiser Family Foundation finds that Arkansas’ “private option” Medicaid expansion has helped reduce the number of uninsured and bring down uncompensated care costs while strengthening the state’s ACA marketplace. A Look at the Private Option in Arkansas draws upon early data as well as interviews conducted in spring 2015 with state officials, providers, insurance carriers, and consumer advocates to provide an initial look how implementation of the private option…

  • A Look at the Private Option in Arkansas

    Issue Brief

    Based on stakeholder interviews and early data on coverage, reduced uncompensated care costs, and other topics, this issue brief provides an initial look at implementation of Arkansas' Section 1115 Medicaid expansion demonstration waiver to require most adults newly eligible for Medicaid through the Affordable Care Act's Medicaid expansion to enroll in Marketplace plans.

  • Will GOP Candidates’ Positions on Obamacare Matter in Crowded Field?

    News Release

    In his latest column for The Wall Street Journal's Think Tank, Drew Altman analyzes the politics of Republican Affordable Care Act replacement plans and the challenges all Republican candidates will face distinguishing themselves from others on the ACA in a crowded primary field. All previous columns by Drew Altman are available online.

  • Will GOP Candidates’ Positions on Obamacare Matter in Crowded Field?

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Drew Altman analyzes the politics of Republican Affordable Care Act replacement plans and the challenges all Republican candidates will face distinguishing themselves from others on the ACA in a crowded primary field.

  • Analysis Estimates 1 in 4 Employers Offering Health Benefits Could Be Affected by the ‘Cadillac Tax’ in 2018 if Current Trends Continue

    News Release

    Share of Potentially-Affected Employers Could Grow to 30% in 2023, 42% in 2028, Analysis Finds New projections from the Kaiser Family Foundation estimate that one in four employers (26%) offering health benefits could be subject to the Affordable Care Act’s tax on high-cost health plans, also known as the "Cadillac plan" tax, in 2018 unless they make changes to their plans. The analysis also estimates that the share of employers potentially affected by the tax…