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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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  • Pulling It Together: Predicting the Future

    Perspective

    A fair amount of attention was given recently to projections made by the Chief Actuary of the Centers for Medicare and Medicaid Services (CMS) about the new health reform law, and how they compare to previous estimates by the Congressional Budget Office (CBO). No doubt the various projections will be grist for claims made in the upcoming political season, so it is important to be clear about the differences between the two estimates and to…

  • Medicaid: A Primer – Key Information on the Nation’s Health Coverage Program for Low-Income People

    Issue Brief

    This Medicaid primer provides an overview of the nation's largest health coverage program, which covers more than 62 million low-income individuals, including children and families, people with disabilities and seniors who are also covered by Medicare. Medicaid also is the dominant source of the country’s long-term care financing. The program will expand significantly under the Affordable Care Act in 2014.

  • Health Center Patient Trends, Enrollment Activities, and Service Capacity: Recent Experience in Medicaid Expansion and Non-Expansion States

    Issue Brief

    In thousands of medically underserved communities across the U.S., community health centers enroll low-income people in health coverage and provide care to millions of patients. Against the backdrop of significant health center expansion over several years and a full year of expanded health coverage under the Affordable Care Act (ACA), this brief examines change between 2013 and 2014 in the volume and health coverage profile of health center patients, and health center enrollment activities and…

  • Surprise Medical Bills

    Issue Brief

    This brief explores the problem of "surprise medical bills" -- charges arising when an insured individual inadvertently receives care from an out-of-network provider. It reviews studies on the extent of the issue, including Kaiser Family Foundation polling data, and outlines state and federal policy responses, including rules and proposed rules for Medicare and plans in Affordable Care Act marketplaces.

  • Medicare Advantage Hospital Networks: How Much Do They Vary?

    Report

    This report takes an in-depth look at Medicare Advantage plans’ hospital networks. The analysis draws upon data from 409 Medicare Advantage plans serving beneficiaries in 20 diverse counties that together accounted for about one in seven (14%) Medicare Advantage enrollees nationwide in 2015. The report examines the size and composition of plans’ hospital networks, the variation across counties, the inclusion of Academic Medical Centers and NCI-Designated Cancer Centers, and the relationship between network size and…

  • The ACA and People with HIV: An Update

    Issue Brief

    This report provides a second look at how the Affordable Care Act (ACA) is impacting people with HIV two years into these new coverage opportunities, based on focus groups conducted with HIV positive individuals from five states in early 2016, after the third round of open enrollment. Groups were conducted with HIV positive individuals who gained insurance coverage – through either the Marketplaces or Medicaid expansion- in California and New York and with those who…

  • New Chart Collection Examines the Public’s Malleable Views Around a National Health Plan and Expanding Access to Medicare

    News Release

    For many years, the Kaiser Family Foundation has been tracking public opinion on the idea of national health plan. Since the 2016 Democratic presidential primary and Sen. Bernie Sanders’ rallying cry for “Medicare-for-all,” our polls have shown a modest increase in support for the idea of a national health plan, and broad support for proposals that expand Medicare. At the same time, our polls also show that support can quickly erode when people hear further…