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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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  • 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…

  • The Massachusetts Health Care Landscape

    Fact Sheet

    This fact sheet summarizes the Massachusetts health care landscape, including data on demographics, population health, the uninsured and the state Medicaid program. Fact Sheet (.pdf)

  • How Five Leading Safety-Net Hospitals Are Preparing For The Challenges and Opportunities of Health Care Reform

    Report

    This study, published in the journal Health Affairs, examines how five leading safety-net hospitals are preparing for major changes expected to result from the Affordable Care Act (ACA), including less government support for uncompensated care and the need to compete for newly insured people. The hospitals studied are Bellevue Hospital Center in New York City; Denver Health Medical Center in Colorado; Parkland Health and Hospital System in Dallas; San Francisco General Hospital in California; and…

  • Visualizing Health Policy: Health Coverage Under the Affordable Care Act (ACA)

    Report

    Related Resources Study Highlights Role of Geography and Plan Shopping Under Medicare Premium Support System Medicare Part D: A First Look at Part D Plan Offerings in 2013 The Medicare Prescription Drug Benefit - An Updated Fact Sheet Online Consumer Guide to Medicare   The latest Visualizing Health Policy infographic is a flowchart illustrating the mechanisms by which people will get health coverage beginning in 2014. Medicare's Role and Future Challenges << Previous Visualizing Health…

  • Quick Take: Essential Health Benefits: What Have States Decided for Their Benchmark?

    Fact Sheet

    Beginning on January 1, 2014, the Affordable Care Act (ACA) requires that all non-grandfathered individual and small group health insurance plans sold in a state, including those offered through an Exchange, cover certain essential health benefits (EHBs). As it stands today, many plans offered in the individual and small group markets lack access to key benefits; the Department of Health and Human Services (HHS) estimates that 62% of health plan enrollees in the individual market…

  • The Public’s Health Care Agenda for the 113th Congress

    Poll Finding

    As the 113th Congress is sworn in, and President Barack Obama begins his second term of office, a comprehensive new Kaiser Family Foundation/Robert Wood Johnson Foundation/Harvard School of Public Health survey queried the public about their priorities for, and views on, a wide range of health and health policy issues. These include issues that will preoccupy federal lawmakers, such as the role of Medicare in the deficit reduction debate, as well as issues currently being…

  • Implementation of Affordable Care Act Provisions to Improve Nursing Home Transparency, Care Quality, and Abuse Prevention

    Report

    The Affordable Care Act (ACA) is the first comprehensive legislation since the Nursing Home Reform Act, part of the Omnibus Budget Reconciliation Act of 1987 (OBRA ’87), to expand quality of care-related requirements for nursing homes that participate in Medicare and Medicaid and improve federal and state oversight and enforcement. Despite the 1987 reforms, beginning in 1997, the Government Accountability Office issued more than 20 reports documenting serious quality of care problems in nursing homes…

  • Faces of the Medicaid Expansion: How Obtaining Medicaid Coverage Impacts Low-Income Adults

    Report

    The Affordable Care Act (ACA) seeks to fill the longstanding gap in Medicaid coverage for low-income adults by expanding eligibility to a minimum floor of 138% of the federal poverty level (FPL), or $24,344 for a family of 3 in 2012. However, the Supreme Court ruling on the ACA effectively made implementation of the Medicaid expansion a state choice. If a state does not expand Medicaid, poor uninsured adults in that state will not gain…

  • Poll: Obamacare Is Not a Big Issue With Midterm Voters

    From Drew Altman

    In this column for The Wall Street Journal’s Think Tank, Drew Altman analyzes recent polling data on the Affordable Care Act and discusses why it will not be a significant factor in next week’s midterm election.

  • Explaining the 2015 Open Enrollment Period

    Issue Brief

    The brief provides an overview of what consumers can expect during the second annual Open Enrollment period under the Affordable Care Act (ACA), which runs from November 15, 2014 through February 15, 2015. It is the second opportunity for uninsured individuals to enroll in private insurance coverage, premium tax credits and cost sharing subsidies and the first time that people newly insured in 2014 can renew their health plan coverage and subsidies. It also overlaps…