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ACA Open Enrollment

9 Things to Watch for the 2027 ACA Open Enrollment Period

9 Things to Watch for the 2027 ACA Open Enrollment Period 

ACA Marketplace Open Enrollment is here—and this year comes with major changes. Marketplace premiums are up 13% on average, more insurers are leaving the Marketplaces than entering, and there is narrower eligibility for health insurance subsidies. Learn more about what to watch.

Health Insurance Marketplace Calculator

The Health Insurance Marketplace Calculator, updated with 2027 premium data, provides estimates of health insurance premiums and subsidies for people purchasing insurance on their own in health insurance exchanges (or “Marketplaces”) created by the Affordable Care Act (ACA).

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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  • Which Path for Health-Care Politics in 2015?

    News Release

    In his first 2015 column for The Wall Street Journal's Think Tank, Drew Altman explains why this year, status quo for the Affordable Care Act is not an option and how the Supreme Court rules in King v. Burwell will determine its path. All previous columns by Drew Altman are available online.

  • Visualizing Health Policy: Premium Changes in the Affordable Care Act’s Insurance Marketplaces 2014-2015

    News Release

    This Visualizing Health Policy infographic illustrates the change in monthly premiums by county, and select cities, from 2014 to 2015 for a 40-year-old person covered by the second-lowest-cost silver “benchmark” plan in the Affordable Care Act’s insurance marketplaces. Premium changes were greatest in Summit County, Colo. (45% decrease) and southeastern Alaska (34% increase), before tax credits. After accounting for tax credits, premiums for a 40-year-old person with an annual income of $30,000 would remain flat in…

  • Proposed Medicaid Expansion in Tennessee

    Fact Sheet

    This fact sheet describes Tennessee’s 1115 waiver demonstration project, Insure Tennessee, which expands the State’s Medicaid program under the Affordable Care Act.

  • Why Drug Price Negotiation Has Staying Power

    From Drew Altman

    In this Axios column, Drew Altman looks beyond Medicare to what’s at stake for employers and workers in the debate about the government negotiating drug prices.

  • How Marketplace Costs and Premiums will Change if Rescue Plan Subsidies Expire

    Policy Watch

    In this Policy Watch we explore the potential impact of the expiration of the American Rescue Plan Act’s enhanced financial help and new eligibility for the Affordable Care Act’s health insurance Marketplace federal subsidies. While the COVID-19 relief legislation passed earlier this year provides greater subsidy assistance through 2022, Democrats in Congress are currently considering making the temporary federal help permanent or extending it as part of their planned budget reconciliation legislation.

  • More Than 6 in 10 of the Remaining 27.4 Million Uninsured People in the U.S. are Eligible for Subsidized ACA Marketplace Coverage, Medicaid or the Children’s Health Insurance Program

    News Release

    Recent policy attention has focused on efforts to reduce the number of uninsured people in the U.S. by expanding eligibility for coverage assistance, including enhanced premium subsidies in the Affordable Care Act (ACA) Marketplace and filling the Medicaid “coverage gap.” A new KFF analysis shows that a majority of the 27.4 million people who remained uninsured in 2020 already are eligible for financial assistance for coverage through Medicaid/CHIP or the Marketplace, suggesting that policies in…

  • A promotional image for the the KFF Health Policy 101 Medicare chapter

    The Affordable Care Act 101

    Feature

    This Health Policy 101 chapter provides an overview of the Affordable Care Act (ACA), a major reform of the U.S. health care system aimed at reducing high uninsured rates and alleviating issues like high out-of-pocket costs and coverage exclusions for preexisting conditions. The ACA significantly altered many aspects of the health system and the chapter explores its mechanisms, such as the Health Insurance Marketplaces, and the evolution of the law since its passage in 2010…

  • Prior Authorization Metrics Provide New Insights into Insurer Practices, but Gaps Remain

    Issue Brief

    This analysis of available 2025 prior authorization data finds insurers denied at least 1 in 8 standard requests for prior authorization across three insurance markets: Medicare Advantage, Medicaid managed care, and the federally facilitated ACA Marketplaces. Denial rates varied wide segments by insurer. The analysis highlights limitations of the data and challenges for consumers interpreting it.

  • Claims Denials and Appeals in ACA Marketplace Plans in 2024

    Issue Brief

    This brief analyzes federal transparency data published by CMS on claims denials and appeals for Marketplace plan offered on HealthCare.gov in 2024, and finds insurers denied 19% of in-network claims. Consumers rarely appeal denied claims.