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Affordable Care Act

The ACA MarketplaceS

How Has Marketplace Enrollment Changed Across States in 2026?

Following several years of rapid enrollment growth in the ACA Marketplaces that corresponded with temporary enhanced premium tax credits, enrollment fell for the first time in seven years in 2026, when those tax credits expired. Every state except for New Mexico saw a drop in Marketplace enrollment from 2025 to 2026. State-based Marketplaces that run their own enrollment platforms, including those that partially offset the enhanced tax credits, generally saw lower drops in enrollment.

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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  • Massachusetts Health Care Reform: Six Years Later

    Issue Brief

    In 2006, then-Gov. Mitt Romney signed Massachusetts' comprehensive health reform designed to provide near-universal health insurance coverage for state residents. Building on a long history of health reform efforts, the state embarked on an ambitious plan to promote shared individual, employer, and government responsibility. This brief examines Massachusetts' experience with coverage and access to care over the last six years, as well as the state's ongoing efforts to deal with persistent high health-care costs. The…

  • Health Care Costs: A Primer

    Issue Brief

    This primer on health care spending in the United States reviews the growth in health care spending since 1970 and the impact of health care costs on families and employers.

  • April Kaiser Health Tracking Poll: Core Views on ACA Remain Stable After Oral Arguments

    Perspective

    The increased public attention to the Affordable Care Act (ACA) generated by the Supreme Court’s consideration of the law did not meaningfully change the public’s opinion of the law overall or of the specific provision at the heart of the legal case against it, the individual mandate. Forty-two percent say they have a favorable opinion of the law this month and 43 percent have an unfavorable one, a division virtually unchanged from March. Similarly, the…

  • Coping with Fragmented Payment in the Real World

    Event Date:
    Event

    The Alliance for Health Reform and The Commonwealth Fund sponsored this briefing which focused on three communities that have reformed and harmonized health care payments across payers to improve care: a New York health center that serves a low income population; a Colorado community that pools money from public and private sources to provide care for all patients; and the State of Maryland, which has been using an all payer hospital rate setting system for…

  • Federal Funding Under the Affordable Care Act

    Fact Sheet

    This fact sheet provides highlights from an analysis tracking the flow of federal Affordable Care Act funds to states as reporter in the Department of Health and Human Services grant database as well as periodic reports from HHS and the Internal Revenue Service. The analysis distinguishes between funds awarded to state and local governments (including state and local health departments and school districts) and private entities (including private employers, health centers, universities, and other community-based…

  • Pulling It Together: The Falloff in Utilization: “There’s Something Happening, Here, What It Is Ain’t Exactly Clear”

    Perspective

    For as long as I have been in the field, we have seen cycles in health care costs. Per capita health spending would rise, then moderate, then rise gain. My colleague Larry Levitt and I documented this in The Sad History of Health Care Costs and my friend Dr. Jim Mongan called it “the peaks and valleys” of health care costs. We have never been sure whether the "valleys" were the result of government actions, such…

  • How Does the Benefit Value of Medicare Compare to the Benefit Value of Typical Large Employer Plans?: A 2012 Update

    Issue Brief

    This study compares the value of Medicare's fee-for-service benefits last year with the value of benefits in two large employer health plans -- a large health plan serving federal employees and a typical large employer Preferred Provider Organization (PPO) plan. For individuals ages 65 and older, the study finds that Medicare remains less generous on average than typical large employer health plans, even after recent improvements in the program's drug coverage. Overall, Medicare would cover…

  • States Getting a Jump Start on Health Reform’s Medicaid Expansion

    Issue Brief

    One of the primary goals of the Affordable Care Act (ACA) is to decrease the number of uninsured through a Medicaid expansion to nearly all individuals with incomes up to 133 percent of the federal poverty level (FPL) ($14,856 for an individual or $25,390 for a family of three in 2012) and the creation of new health insurance exchanges. These coverage expansions, which will take effect in 2014, will eventually cover about 32 million uninsured…

  • Kaiser Health Tracking Poll — April 2012

    Feature

    The April poll gauged Americans' opinions of the Affordable Care Act (ACA) in the wake of the Supreme Court oral arguments in the legal challenges to the health reform law in March. The increased public attention to the Affordable Care Act generated by the Supreme Court's consideration of the law did not meaningfully change the public's opinion of the law overall or of the specific provision at the heart of critics' legal case against it,…

  • Insurer Rebates under the Medical Loss Ratio: 2012 Estimates

    Report

    Beginning in 2011, the Affordable Care Act (ACA) requires insurance plans to pay out a minimum percentage of premium dollars towards health care expenses and quality improvement activities, limiting the amount spent on administrative and marketing costs and profit. Under the law, large group plans are required to spend at least 85 percent of premium dollars on health care and quality improvement, while small group plans must spend at least 80 percent. These ratios are…