Affordable Care Act

The ACA MarketplaceS

Individual Market Enrollment Declined by 18% Since June 2025

Individual Market Enrollment Fell 18%, Suggesting Continued ACA Marketplace Losses

Enrollment in the individual health insurance market fell by 18%—over 4.6 million people—from 25.2 million in June 2025 to 20.5 million in June 2026. Falling individual market enrollment suggests further decline in ACA Marketplace enrollment this year, since Marketplace enrollees represent the vast majority of individual market coverage.

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: How Many People Have Nongroup Health Insurance?

    Issue Brief

    The implementation of the Affordable Care Act (ACA) has focused attention on the composition of the nongroup market: how it looked before the new regulatory provisions take effect and how it will change afterwards. There are several ways of answering this question, depending on the time period for measuring enrollment and the information source. There is substantial turnover among people with nongroup coverage, which means that the number of people covered at the beginning of…

  • Medical Debt Among People With Health Insurance

    Report

    This report examines the causes and contributors to medical debt, medical bankruptcy, and other difficulties with medical bills among people with insurance. Through in-depth interviews of nearly two-dozen people and quantitative analysis of national survey data, the authors of this report find that in-network and out-of-net-work cost sharing primarily contribute to medical debt among the insured.

  • Abortion Coverage in the ACA Marketplace Plans: The Impact of Proposed Rules for Consumers, Insurers and Regulators

    Issue Brief

    On November 7, 2018, a day after the 2018 midterm elections, the Trump Administration issued a proposed regulation to address “Exchange Program Integrity.” A major element of this proposed rule would affect insurers, consumers, and state insurance regulators in the states that either allow or require abortion coverage. The Affordable Care Act (ACA) allows states to ban plans from offering abortion as a benefit on their Qualified Health Plans (QHPs) and requires plans that cover…

  • If the Affordable Care Act is Struck Down, Nearly All Americans Would Be Affected in Some Way

    News Release

    The Affordable Care Act’s changes to the nation’s health care system are so widespread that nearly all Americans would be affected in some way if a federal judge’s decision ruling the entire law unconstitutional is upheld, according to a new analysis from KFF (the Kaiser Family Foundation). While the changes to the individual insurance market – including protections for people with pre-existing conditions, creation of insurance marketplaces, and premium subsidies for low and modest income…

  • The Uninsured and the ACA: A Primer – Key Facts about Health Insurance and the Uninsured amidst Changes to the Affordable Care Act

    Report

    The Uninsured and the ACA: A Primer provides information on how insurance has changed under the ACA and more recent policy changes, how many people remain uninsured, who they are, and why they lack health coverage. It also summarizes what we know about the impact that a lack of insurance can have on the health outcomes and personal finances and the difference health insurance can make in people’s lives.

  • The Health Care Priorities and Experiences of California Residents

    Report

    This survey by the Kaiser Family Foundation and California Health Care Foundation gauges California residents’ views on health care priorities facing the state’s new governor and legislature, including health care affordability, access to care, mental health and substance use treatment, and provider shortages. It also highlights Californians’ experiences in the health care system, as well as views on the Affordable Care Act, Covered California, Medi-Cal, and proposals to advance a single-payer health insurance system in…

  • Testimony: Pre-Existing Conditions and Health Insurance

    Issue Brief

    KFF's Karen Pollitz testimony before the U.S. House Committee on Ways and Means on Jan. 29, 2019 examines the prevalence of pre-existing conditions, the impact of the Affordable Care Act's prohibition against medical underwriting and other provisions aimed at stabilizing the insurance risk pool, and the trade-offs involved in relaxing those provisions.