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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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  • Medicaid Expansion Waivers: What Will We Learn?

    Issue Brief

    Section 1115 waivers authorize research and demonstration projects that, in the view of the Health and Human Services (HHS) Secretary, further the purposes of the Medicaid program. The ACA implemented new requirements for these waivers, including that states must have a publicly available, approved evaluation strategy. This brief examines some of the major research questions and hypotheses relevant to the federal and state evaluations of Medicaid expansion Section 1115 waivers and explores key challenges that…

  • Assessing ACA Marketplace Enrollment

    Issue Brief

    This analysis examines factors that may have kept 2016 enrollment in Affordable Care Act (ACA) marketplace plans from reaching early projections, and it estimates that sign-ups will continue to grow modestly in coming years.

  • A New Way of Measuring Health Costs Sheds Light on Recent Health Spending Trends

    Issue Brief

    National health spending started to grow more rapidly recently after several years of unusually slow growth. This analysis from the Kaiser Family Foundation and the federal Bureau of Economic Analysis helps to dissect why that may be happening. Using recently-released disease-based health spending data compiled by the federal government, the analysis finds that the drivers of health spending growth shifted in the years following the Great Recession. The number of people treated for various diseases picked up,…

  • An Overview of Actions Taken by State Lawmakers Regarding the Medicaid Expansion

    Fact Sheet

    The ACA Medicaid expansion has garnered different responses from statelawmakers - Democratics and Republicans as well as governors and legislatures. While it does not cover how every state has enacted the ACA Medicaid expansion, this fact sheet highlights some of the different actions state lawmakers have taken in response to the ACA Medicaid expansion.

  • ACA 101: What You Need To Know

    Event Date:
    Event

    On Friday, March 6, 2014, the Kaiser Family Foundation and the Alliance for Health Reform hosted an ACA 101 briefing on the Affordable Care Act. The briefing took place just as the second marketplace enrollment period ended, and the Supreme Court heard oral arguments in a case challenging the ACA's subsidies (King v Burwell).

  • Health-Care Deductibles Climbing Out of Reach 

    News Release

    In his latest column for The Wall Street Journal's Think Tank, Drew Altman explores the trend of higher deductibles in health plans and discusses a new analysis showing that many people with insurance don’t have sufficient financial resources to pay a mid- or high-range deductible. All previous columns by Drew Altman are available online.

  • JAMA Forum: Of SCOTUS and Chicken

    Perspective

    Larry Levitt's March 2015 post explores what could happen if the U.S. Supreme Court rules for the plaintiffs in the King v. Burwell case, the lawsuit that challenges the federal government’s authority to provide financial assistance to people who buy insurance in federally-operated marketplaces created by the Affordable Care Act.