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 Would Another Trump Presidency Mean for Health Care?

    Perspective

    In a new column in JAMA Health Forum, Larry Levitt, KFF’s executive vice president for health policy, explores what a second Trump presidency might mean for health policy based on his record and remarks, including potentially weakening the Affordable Care Act, reducing federal Medicaid costs, and restricting access to abortion.

  • Where ACA Marketplace Enrollment is Growing the Fastest, and Why

    Policy Watch

    In 2024, Affordable Care Act (ACA) Marketplace enrollment hit a new record high, reaching over 21 million people. This policy watch discusses the the factors contributing to the increased enrollment in the fastest growing marketplaces.

  • With or Without ACA Repeal, ACA and Medicaid Cuts are Looming

    Perspective

    In this JAMA Health Forum post, Executive Vice President Larry Levitt explores why the incoming Trump administration and Republican majorities in Congress are likely to pursue budget cuts in Medicaid and the Affordable Care Act and why such efforts are likely to boost the number of uninsured Americans.

  • Signing Up for Marketplace Coverage Remains a Challenge for Many Consumers

    Policy Watch

    As open enrollment begins for Marketplace plans, this Policy Watch provides information about consumer experiences with Marketplace sign up from the 2023 KFF Consumer Survey. Data from the survey show that Marketplace sign up has been a challenge to many consumers---often more complicated than enrollment in other kinds of health insurance. The Policy Watch also spotlights efforts to address common enrollment problems such as option overload and transitioning to Marketplace coverage from other forms of…

  • Medicare-for-All and Public Plan Buy-In Proposals: Overview and Key Issues

    Issue Brief

    This issue brief compares eight Medicare-for-All and public plan option bills that have been introduced in the 115th Congress. The brief describes the range of proposals on the table and raises key questions related to how these proposals could affect coverage, out-of-pocket costs, existing coverage, payments to providers, as well as overall costs and financing, and potential tradeoffs.

  • The Innovation Center: How Much Can It Improve Quality and Reduce Costs – and How Quickly?

    Event Date:
    Event

    The new Center for Medicare and Medicaid Innovation (CMMI) seeks to test new health care payment and service delivery models that can potentially enhance quality of care for beneficiaries while reducing costs. How is the agency planning to administer its $10 billion in funding? What early projects is the center undertaking? Is there private sector evidence that its goals can be achieved? What will happen to existing innovations now being rolled out by providers and…

  • A Guide to the Supreme Court’s Review of the 2010 Health Care Reform Law

    Issue Brief

    With the Supreme Court preparing to hear oral arguments about challenges to the 2010 Affordable Care Act in March 2012, this Kaiser Family Foundation brief serves as a primer on the pending case, which challenges the constitutionality both of the law's individual mandate that requires most Americans to obtain health insurance and of provisions requiring states to expand eligibility for their Medicaid programs. The brief provides an overview of the pending case, the key constitutional…

  • Designing a Marketplace that Works: Steps to Affordable Coverage

    Event Date:
    Event

    The Affordable Care Act enacted in March 2010 calls for the establishment of state health insurance exchanges — marketplaces through which individuals and small businesses can purchase affordable insurance. These exchanges must begin operation by January 1, 2014. This October 22 briefing, cosponsored by the Alliance for Health Reform and The Commonwealth Fund, looked at the options states have, and the federal government's role. For more information, please visit Alliance's event page. Full Video  …