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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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  • Public Opinion on Health Reform: What Do the Polls Mean?

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    The Alliance for Health Reform and the Kaiser Family Foundation co-sponsored this briefing to have a panel of experts answer questions about how public support for health reform waxes and wanes depending, not only on what's being proposed in the reform proposals, but also on who asks the question and how it is asked. Issues addressed include: Do the majority of Americans support health care reform now? Do people want to pay for covering the…

  • Pulling It Together: Repeal

    Perspective

    The House will soon vote to repeal the health reform law, the Senate won’t, and the President would veto it if they did.  So what does a House vote for repeal mean? It is, of course, a campaign promise kept to the political right.  It is also a signal from the Republican leadership that they plan to continue to use opposition to the health reform law as a rallying point for their political base.  Our…

  • Shared Medical Decision Making: We’re in This Together

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    In recent years, awareness of the patient’s important role in managing his or her own care has been steadily growing—fed not only by such trends as the proliferation of health information on the internet and direct-to-consumer advertising, but also by the emerging science of patient-centered decision making. One way to facilitate shared decision making is through the use of decision support tools, which offer the patient high quality medical information in an easily understandable format.…

  • Essential Health Benefits: Balancing Affordability and Adequacy

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    Under the Patient Protection and Affordable Care Act (PPACA), insurance plans offered through state insurance exchanges as well as non-grandfathered plans offered in the individual and small group markets - will be required to cover a set of health benefits and services called the "essential health benefits" package. Guidance issued last month by the Department of Health and Human Services will give each state some discretion to specify benefits package raises many questions. What is…

  • Massachusetts’ Demonstration to Integrate Care and Align Financing for Dual Eligible Beneficiaries

    Issue Brief

    Massachusetts is the first state to finalize a memorandum of understanding (MOU) with the Centers for Medicare and Medicaid Services (CMS) to test CMS's capitated financial alignment model for beneficiaries who are dually eligible for Medicare and Medicaid, with enrollment beginning on April 1, 2013. Starting in 2013, CMS will implement a three-year multi-state demonstration to test new service delivery and payment models for people who are eligible for both federal health programs. Massachusetts' demonstration…

  • Making Sense of the Census Uninsured Numbers

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    The Alliance for Health Reform and the Kaiser Family Foundation’s Commission and Medicaid and the Uninsured discuss the Census uninsured numbers. The Census Bureau announced that the number of people without health insurance dropped from 50 million to 48.6 million in 2011, marking the first decrease since 2007. That information came from the Current Population Survey, but it isn't the only data that Census is releasing on the uninsured. The Bureau is preparing a second…

  • New Kaiser Survey Finds Eleven Million Newly Insured Adults As of Mid-December, But Nearly Half Who Remained Uninsured One Year After Full Implementation of the Affordable Care Act Were Eligible for Medicaid or Marketplace Tax Credits

    News Release

    Many Of The Remaining Uninsured Say They Didn’t Seek Coverage or Considered It Too Expensive, While Others Were Told (Or Believed) They Were Not Eligible About 11 million adults had become newly insured under the Affordable Care Act by mid-December 2014, according to a new national survey of more than 10,000 adults by the Kaiser Family Foundation.  Nearly half of the approximately 30 million adults who remained uninsured were eligible for assistance under the law,…

  • How Have Insurers Fared Under the Affordable Care Act?

    Perspective

    This analysis tracks the financial performance of insurers in the individual market by evaluating trends in the medical loss ratio (MLR) in the pre-ACA landscape from 2010 to 2013 and estimates the MLR for the first full year of Affordable Care Act implementation in 2014. Findings suggest that although performance varied among insurers, insurers overall had roughly comparable financial performance in 2014 as in recent prior years.

  • Updated for 2015: Tool Displays By Locality the Share of Potential ACA Federal Marketplace Enrollees That Signed Up

    News Release

    An interactive tool from the Kaiser Family Foundation is now updated with 2015 data, allowing users to view on a local level the share of potential enrollees who signed up for a health plan in a federally-based marketplace under the Affordable Care Act. With Mapping Marketplace Enrollment, users can also compare the number of potential and actual enrollees – and the percentage that signed up for a plan -- in 2014 and 2015 within 100,000-resident…

  • Facing the Fallout From a King v. Burwell Ruling

    From Drew Altman

    With a Supreme Court decision on King v. Burwell looming, this Drew Altman column for The Wall Street Journal’s Think Tank plays out the politics of a ruling for the two major parties.