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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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  • Health Reform Hits Main Street

    Video

    This short cartoon explains the problems with the current health care system, the health reform changes that are happening now, and the big changes coming in 2014 as part of the Affordable Care Act (ACA). You can view the video on our site and it is also available on YouTube.

  • The Cost of the Individual Mandate Penalty for the Remaining Uninsured

    Issue Brief

    This analysis provides estimates of the share of uninsured people eligible to enroll in the Affordable Care Act marketplaces who will be subject to the individual mandate penalty, and how those penalties are increasing for 2016. It also provides estimates of the number of people who could have a zero-dollar contribution or pay less for health insurance than the penalty, due to premium subsidies, and the number of people who would pay more for a…

  • Medical Debt Among Insured Consumers: The Role of Cost Sharing, Transparency, and Consumer Assistance

    Perspective

    This policy insight examines medical debt among insured consumers, exploring how high cost sharing in health insurance plans can contribute, and explaining how greater transparency could help consumers avoid some financial pitfalls. It also provides an update on provisions of the Affordable Care Act meant to increase health plan transparency and bolster consumer assistance.

  • High Health-Care Prices: More Talk Than Action

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Drew Altman explores how price is the major factor that distinguishes the cost of our health care system from those in other developed nations, yet most efforts in the U.S. to address health-care costs don’t focus on price much at all.

  • Proposed Medicaid Expansion in Tennessee

    Fact Sheet

    This fact sheet describes Tennessee’s 1115 waiver demonstration project, Insure Tennessee, which expands the State’s Medicaid program under the Affordable Care Act.

  • Medicare’s Role in Health-Care Payment Reform

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Drew Altman explores whether Secretary Burwell's announcement this week about Medicare's payment reform initiative is another sign that the public sector is becoming the engine driving payment and delivery reform.

  • Medicaid’s Role in West Virginia

    Fact Sheet

    This fact sheet provides data on Medicaid's role in West Virginia. It describes how ending the enhanced match for Medicaid expansion and implementing a per capita cap or block grant would affect West Virginia.

  • Analysis of 2016 Premium Changes and Insurer Participation in the Affordable Care Act’s Health Insurance Marketplaces

    Issue Brief

    This analysis provides an early look at premium changes for individuals in the health insurance marketplaces, created under the Affordable Care Act (ACA), in major cities in 10 states plus DC. Premium changes for the benchmark silver plans vary significantly across the sample cities. The benchmark rates will increase 4.4 percent on average in 2016 without accounting for tax credits, a relatively modest amount but greater than the average increase for 2015.

  • About 1 in 6 Emergency Visits and Hospital Stays Had At Least One Out-of-Network Charge in 2017

    News Release

    In roughly 1 of every 6 emergency room visits and inpatient hospital stays in 2017, patients came home with at least one out-of-network medical bill, a new KFF analysis finds. More specifically, 18 percent of all emergency visits and 16 percent of in-network hospital stays had at least one out-of-network charge, leaving patients at risk for surprise medical bills, according to the analysis of claims data from large employer plans. The analysis also finds the…