Affordable Care Act

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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  • Pre-Existing Condition Prevalence Among Women Under Age 65

    Issue Brief

    We analyzed data from the 2018 National Health Interview Survey (NHIS) and 2018 Behavioral Risk Factor Surveillance System (BRFSS) to calculate prevalence rates of declinable health conditions. This data note looks at the share of adults ages 18-64 with declinable pre-existing conditions, with a particular focus on women.

  • Policy Watch - KFF - Coronavirus, Election, Racial Disparities

    10 Reasons to Pay Attention to ACA Open Enrollment in 2020

    Policy Watch

    Whether new to the market or reenrolling, everyone who wants 2021 coverage through the ACA Marketplace must sign up during Open Enrollment. Here, we detail ten ways in which the 2021 ACA open enrollment period differs from enrollment periods in past years.

  • Joe Biden’s Big Lead on Health Care Issues

    From Drew Altman

    In an Axios column, Drew Altman discusses how this election year health isn’t a single issue -- but several -- and Joe Biden has the edge over President Trump on all of them, even as opposition to the ACA remains popular with Trump’s base.  

  • What Happens to Medicaid Drug Policy if the ACA is Overturned?

    Issue Brief

    The repeal of the ACA could mean loss of Medicaid coverage for up to 15 million that were enrolled in the ACA Medicaid expansion group prior to the COVID-19 pandemic; however, repeal could also mean significant changes to Medicaid prescription drug policy with implications for state and federal spending for prescription drugs for non-expansion Medicaid enrollees.

  • 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…

  • The ACA and People with HIV: Profiles from the Field

    Issue Brief

    This brief provides profiles of twelve individuals living with HIV to offer an in-depth look at how the Affordable Care Act (ACA) has affected their healthcare and coverage. Participants live in California, Florida, Georgia, New York, and Texas and discuss their enrollment and coverage experience, including whether they got new coverage (in the Marketplace or Medicaid), how their HIV care has been affected, and the role of the Ryan White HIV/AIDS Program.

  • New Evidence Health Spending Is Growing Faster Again

    From Drew Altman

    In this column for The Wall Street Journal’s Think Tank, Drew Altman discusses new Census Department survey data showing higher health spending growth over the last four economic quarters, and raises the question: is the health spending slowdown over?

  • The ACA and People with HIV: Profiles from the Field

    News Release

    New in-depth profiles of 12 people with HIV highlight how the Affordable Care Act’s coverage expansions impacted their access to coverage and care. While some experienced serious bumps along the way, those who gained coverage through Medicaid and the Marketplaces were largely able to meet both their HIV and non-HIV care needs. At the same time, the Ryan White HIV/AIDS Program continued to play a role in HIV care and coverage, both for those who remained…