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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  • What the Actuarial Values in the Affordable Care Act Mean

    Issue Brief

    The Patient Protection and Affordable Care Act (PPACA) establishes four levels of coverage based on the concept of "actuarial value," which represents the share of health care expenses the plan covers for a typical group of enrollees. As plans increase in actuarial value – bronze, silver, gold, and platinum – they would cover a greater share of enrollees' medical expenses overall, though the details could vary across plans. The levels of coverage provided for in…

  • A Reporter’s Guide to Supreme Court Arguments on Health Reform

    Event Date:
    Event

    The Alliance for Health Reform and the Robert Wood Johnson Foundation sponsored this reporters-only briefing to help journalists cover the Supreme Court arguments challenging the Patient Protection and Affordable Care Act and their aftermath with greater depth and understanding. Panelists focus on tips, story ideas and angles that have perhaps been underreported or overlooked, as well as angles for after the court ruling comes down, expected in June. The panel was co-moderated by Ed Howard…

  • An Update on CMS’s Capitated Financial Alignment Demonstration Model For Medicare-Medicaid Enrollees

    Issue Brief

    Beginning in January, 2013, the Centers for Medicare and Medicaid Services (CMS) will implement a three year multi-state demonstration to test new service delivery and payment models for people dually eligible for Medicare and Medicaid. These demonstrations will enroll full dual eligibles in managed fee-for-service or capitated managed care plans that seek to integrate benefits and align financial incentives between the two programs. On January 25, 2012, CMS issued a memorandum providing additional guidance for…

  • Questions About Essential Health Benefits

    Perspective

    The Institute of Medicine (IOM) recently issued its long-awaited report on defining the essential health benefits under the Affordable Care Act (ACA). As expected, the committee preparing the IOM report did not recommend which specific services should be covered, but rather discussed what the process should be for defining the essential benefits, which all insurers selling coverage to individuals and small businesses will have to provide beginning in 2014. Somewhat unexpected was their recommendation to set a…

  • Measuring the Affordability of Employer Health Coverage

    Perspective

    A recent draft regulation issued by the Treasury Department describes who is eligible for premium tax credits to help them afford coverage offered through health insurance exchanges beginning in 2014. Tax credits will be available to people with incomes between 100 and 400 percent of the poverty level who are not eligible for public coverage such as Medicaid or Medicare and who are not offered affordable health coverage by an employer. The approach that the…

  • What Do They Mean When They Talk About Pre-Existing Health Conditions?

    Perspective

    One health care issue about which the presidential candidates acknowledge they have differences is how the health care system should treat people with pre-existing health conditions. People who have a health condition (such as an illness or pregnancy) or who are at higher than average risk of needing health care are referred to as having a pre-existing health condition. The insurance reform provisions of the Affordable Care Act (ACA), when they take effect in 2014, will…

  • Private Insurance Benefits and Cost-Sharing Under the ACA

    Perspective

    The Department of Health and Human Services (HHS) recently released guidance on the two key components that determine the level of protection that private insurance plans will provide to consumers under health reform. The first involves the services that insurance plans must cover, and the second involves how much patients must pay out-of-pocket for those services. The Affordable Care Act (ACA) establishes new rules for what insurers must provide for both components starting in 2014.…

  • August Kaiser Health Tracking Poll: A Look At The GOP As The Republican Convention Draws Near

    Perspective

    Despite the ongoing focus on Republican opposition to the Affordable Care Act (ACA), the latest Kaiser Health Tracking Poll finds that the ACA is not the top health care priority among Republicans. While jobs are still the number one issue, when asked about the health care issues that will impact their vote this fall, Republicans’ top concern was the cost of health care and insurance, named by two-thirds as either “extremely” or “very important” to…

  • March Kaiser Health Tracking Poll: The ACA at Two Years; The Individual Mandate and the Supreme Court

    Perspective

    As the Patient Protection and Affordable Care Act (ACA) nears its second birthday, the latest Kaiser Health Tracking Poll finds that public opinion on the law remains evenly split (41 percent favorable, 40 percent unfavorable) with sharp divisions along partisan lines, much as it has been since the law was passed. With the Supreme Court preparing to hear challenges to the law later this month, about half the public thinks the Court should strike down the…

  • Kaiser Poll: Early Reaction to Supreme Court Decision on ACA

    Perspective

    Following last week's Supreme Court's decision upholding the heart of the Affordable Care Act (ACA), a majority of Americans (56 percent) now say they would like to see the law's detractors stop their efforts to block its implementation and move on to other national problems. In the first of two polls to be released this month looking at opinion on the ACA in the wake of the Court's decision, Democrats overwhelmingly say opponents should move…