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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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  • 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…

  • Kaiser Analysis: Estimated Health Insurance Rebates Under the Health Reform Law Total $1.3 Billion in 2012

    News Release

    NEWS RELEASEApril 26, 2012 Rebates Expected to Vary Significantly by State MENLO PARK, Calif. – Consumers and businesses are expected to receive an estimated $1.3 billion by this August in rebates from health insurers who spent more on administrative expenses and profits than allowed by the Affordable Care Act (ACA), finds a new analysis from the Kaiser Family Foundation of the latest estimates provided by insurers to state insurance commissioners. The rebates include $541 million…

  • Patient Cost-Sharing Under the Affordable Care Act

    Report

    Under the Affordable Care Act (ACA), four tiers of health insurance will be offered in the health insurance exchanges and throughout the individual and small group markets beginning in 2014. Under the minimum coverage plan, the “Bronze” plan, the insurance plan will pay for 60 percent of the costs of covered benefits on average while the individual enrolled will pay the remaining 40 percent in deductibles, copays and coinsurance. Individuals will have the option to…

  • The Health Reform Law’s Medicaid Expansion: A Guide to the Supreme Court Arguments

    Issue Brief

    One significant element of the pending U.S. Supreme Court case challenging the Affordable Care Act is the constitutionality of the law's Medicaid expansion. This provision of the law requires states that choose to participate in the Medicaid program to cover nearly all adults under age 65 with household incomes at or below 133% of the federal poverty level as of January 2014. A ruling on the Medicaid expansion could have far-reaching impacts on the present…

  • The Role of the Basic Health Program in the Coverage Continuum: Opportunities, Risks & Considerations for States

    Issue Brief

    This brief assesses the potential benefits and drawbacks to states from implementing a Basic Health Program under the Affordable Care Act. The law gives states the option of creating a Basic Health Program, using federal tax money to subsidize insurance coverage for low-income residents who would otherwise be eligible to purchase coverage through a state exchange. Such a program would give states the ability to provide more affordable coverage for these low-income residents and improve…

  • Implementing Health Reform in the States

    Event Date:
    Event

    The Alliance for Health Reform, Robert Wood Johnson Foundation and the Association of Health Care Journalists sponsored this live webinar on March 27, 2012, to take a look at what's happening in the states with implementation of the Patient Protection and Affordable Care Act. Many of the key decisions implementing the health reform law are left to the states. For example, states have leeway in how they set up health insurance exchanges, where uninsured individuals…

  • KFF Data Note: A Snapshot of Public Opinion on the Individual Mandate

    Perspective

    This week, the Supreme Court hears arguments on several challenges to the Patient Protection and Affordable Care Act (ACA), including the provision that requires individuals to purchase health insurance as of 2014, known as the individual mandate. For the two years since the law’s passage, and during the debate leading up to it, this provision has been one of the most controversial aspects of the law. As the lawyers, policymakers, ACA opponents and supporters focus…

  • KFF Data Note: Americans’ Views on the Personal Impact of the ACA and the Supreme Court’s Decision

    Perspective

    As the Supreme Court hears cases challenging the constitutionality of parts of the Affordable Care Act, a relatively small share of the public thinks the Supreme Court’s decision will have a lot of impact on their family (28 percent). At the same time, the public is divided as to whether the law overall will leave their own families better off (26 percent), worse off (33 percent), or if it won’t make much difference (34 percent).…

  • The Individual Mandate: How Sweeping?

    Perspective

    The so-called "individual mandate"  – the provision under the Affordable Care Act (ACA) that requires most individuals to carry a minimum level of insurance coverage and is now being considered by the Supreme Court – has emerged as the least popular element of the reform law and the prime target for its opponents. Yet in practice, the mandate may not be quite as far-reaching as the controversy over it suggests. The vast majority of Americans already…