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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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  • Data Note: Effect of State Decisions on State Risk Scores

    Issue Brief

    To gauge whether individual market risk pools are healthier in states that have expanded Medicaid and did not allow transitional plans, this data note compares average state risk scores using data from the Centers for Medicare & Medicaid Services Summary Report on Risk Adjustment for the 2015 benefit year. The analysis finds that states that expanded Medicaid and did not allow transitional plans had lower average risk scores, suggesting the risk pools in those state’s…

  • The Affordable Care Act’s Little-Noticed Success: Cutting the Uninsured Rate

    From Drew Altman

    This column was published as a Wall Street Journal Think Tank column on October 12, 2016. U.S. Uninsured Rate is At An All-Time Low, But The Public Doesn’t Know It Donald Trump derided the Affordable Care Act in the second presidential debate as a “total disaster.” One inarguable success of the 2010 health-care law has been to drive the rate of uninsured Americans to a historic low. That sizeable shift makes it significant that a plurality of the…

  • Analysis: Nearly 12 Million People Who Remain Uninsured Are Eligible for Financial Help Under the Affordable Care Act, About Half Through Medicaid and Half Through the Marketplaces

    News Release

    As the Nov. 1 start of the Affordable Care Act’s fourth open enrollment period approaches, a new Kaiser Family Foundation analysis estimates that 11.7 million people who remain without health insurance are eligible for Medicaid in their state or for tax credits to purchase health insurance through their state’s Affordable Care Act marketplace. While millions of people have gained coverage under the ACA and the nation’s uninsured rate has fallen to a record low, the…

  • JAMA Forum: Those Pesky Lines Around States

    Perspective

    In this post for The JAMA Forum, the Kaiser Family Foundation's Larry Levitt discusses the concept of allowing insurers to sell health plans across state lines and how such a proposal could affect people with pre-existing conditions.

  • Kaiser Health Tracking Poll: November 2016

    Feature

    The November Kaiser Health Tracking Poll, conducted one week after the 2016 presidential election, finds health care played a limited role in voters’ 2016 election decisions. While President-elect Trump and Republican lawmakers have made it clear that one of their top priorities is the repeal of the Affordable Care Act, the survey finds Americans are divided on what they want to see lawmakers do to the health care law. This survey also finds that many…

  • After the Election, the Public Remains Sharply Divided on Future of the Affordable Care Act

    News Release

    Among Those Who Favor Repeal, Arguments About Loss of Coverage for Those with Pre-Existing Conditions Can Sway Some Opinions Many Obamacare Provisions Remain Broadly Popular Across Party Lines, But Not its Mandate The first Kaiser Health Tracking Poll since the 2016 election finds that Americans are largely divided on the future of the Affordable Care Act even though many of the law’s major provisions remain quite popular across party lines. The new survey finds that…

  • What’s at Stake in a Potential Repeal of the ACA Medicaid Expansion?

    News Release

    President-elect Trump and Republican leaders in Congress have vowed to repeal the Affordable Care Act (ACA) and replace it with an alternative plan. There are now 32 states (including DC) that have adopted the ACA’s Medicaid expansion. While the details of a repeal-and-replace plan are not yet available to assess its impact, a new brief reveals what’s potentially at stake for Medicaid in the debate by examining the changes in health coverage and financing that…

  • The Health Care Plan Trump Voters Really Want

    From Drew Altman

    In a New York Times op-ed, Drew Altman draws on observations from focus groups in rust belt states of people in the Affordable Care Act (ACA) marketplaces who voted for President-elect Trump and say they may not like their coverage under the ACA but could like Republican replacement plans even less.

  • Private Contracts Between Doctors and Medicare Patients: Key Questions and Implications of Proposed Policy Changes

    Issue Brief

    Changes in Medicare’s private contracting laws could have significant implications for beneficiaries, doctors, and the Medicare program. This brief summarizes the three options that physicians and practitioners currently have for charging Medicare patients, explains how private contracting works in Medicare under current law, and reviews current proposals on changes to private contracting in Medicare, as well as their implications for patients, physicians, and the Medicare program.