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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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  • 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.

  • Two Substantive Sides to Debate Over Obamacare’s ‘Cadillac Tax’

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman says the debate about whether to keep or repeal the Cadillac tax is more than a debate between sound policy and good politics, there are strong substantive arguments on both sides. All previous columns by Drew Altman are available online.

  • How Primary-Care Physicians Are Handling the Influx of Newly Insured

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Kaiser’s President Drew Altman is joined by The Commonwealth Fund's President David Blumenthal to discuss the impact of the Affordable Care Act’s coverage expansion on the primary care delivery system.

  • The Wisconsin Health Care Landscape

    Fact Sheet

    Wisconsin has long been a leader among states in expanding coverage to its low-income residents since even before the major coverage provisions of the Affordable Care Act (ACA) took effect on January 1, 2014. While Governor Scott Walker decided not to adopt the Medicaid expansion, thousands of previously uninsured Wisconsinites have enrolled in health coverage through the state’s broad BadgerCare Medicaid waiver, which increases coverage to low-income populations, and through the new Health Insurance Marketplace.…

  • 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.