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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  • Key Findings from the Field: Early Experience with ACA Enrollment in Maryland and Nevada

    Issue Brief

    To learn more about the early ACA enrollment experience in two states, the Kaiser Commission on Medicaid and the Uninsured and PerryUndem Research and Communication conducted focus groups in Baltimore, Maryland and Reno, Nevada in November 2013 with low- and moderate-income individuals who recently applied for health insurance and consumer assisters trained to help individuals enroll. This study builds on previous work that examined preparations for open enrollment in several states, including Maryland and Nevada,…

  • Medicare and the Federal Budget: Comparison of Medicare Provisions in Recent Federal Debt and Deficit Reduction Proposals

    Issue Brief

    This brief provides a side-by-side comparison of Medicare provisions included in broad-based packages to reduce the deficit and debt put forward by the President and the Chairmen of the House and Senate Budget Committees. In addition, this brief summarizes Medicare provisions included in other deficit- and debt- reduction proposals released since January 2012 and describes recent activities that pertain to Medicare and the federal budget, including Medicare’s role in the Affordable Care Act (ACA), the…

  • An Introduction to Medicaid and CHIP Eligibility and Enrollment Performance Measures

    Issue Brief

    The Centers for Medicare & Medicaid Services (CMS) recently established 12 new Medicaid and CHIP eligibility and enrollment performance indicators for states to report beginning in October 2013. These indicators provide insight into the performance of new eligibility and enrollment policies established under the Affordable Care Act (ACA). In December 2013, CMS released initial reports for a subset of the indicators. This brief provides an overview of the new performance indicators; the initial data; and…

  • Medical Debt Among People With Health Insurance

    Report

    This report examines the causes and contributors to medical debt, medical bankruptcy, and other difficulties with medical bills among people with insurance. Through in-depth interviews of nearly two-dozen people and quantitative analysis of national survey data, the authors of this report find that in-network and out-of-net-work cost sharing primarily contribute to medical debt among the insured.

  • How Will the Uninsured in Washington Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Washington, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Washington are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Minnesota Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Minnesota, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Minnesota are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in California Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in California, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in California are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in New Mexico Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in New Mexico, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in New Mexico are eligible for Medicaid or financial…