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Affordable Care Act

The ACA Marketplace

2025 KFF Marketplace Enrollees Survey

In 2025, about one in three ACA enrollees said they would be “very likely” to look for a lower-premium Marketplace plan If their premium payments doubled.

Cost Concerns and Coverage Changes: A Follow-Up Survey of ACA Marketplace Enrollees

Following the expiration of the enhanced premium tax credits for people with Affordable Care Act (ACA) Marketplace plans, a new KFF follow-up survey of the same Marketplace enrollees KFF surveyed in 2025 finds half (51%) of returning enrollees say their health care costs are “a lot higher” this year compared to last year, including four in 10 who specifically say their premiums are “a lot higher.”

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POLLING

Tracking the Public’s Views on the ACA

While overall opinion of the Affordable Care Act has been more favorable than unfavorable since 2017, there remain deep partisan divides. See how public opinion on the ACA has changed from the inception of the law to the present. This interactive tool highlights key moments when views shifted and trends based on party identification, income, age, gender, and race/ethnicity.
DATA

Marketplace Enrollment is Down in 2026—But All of the Data Isn’t in Yet

ANALYSIS

Higher Premium Payments or Higher Deductibles: The ACA's Tradeoffs

QUIZ

Test Your Knowledge of the Affordable Care Act

ANALYSIS

Competition Increased in Individual Market But Fell in Fully Insured Group Markets

Timely insights and analysis from KFF staff

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  • Survey of Non-Group Health Insurance Enrollees, Wave 3

    Poll Finding

    The survey, conducted shortly after the close of the Affordable Care Act’s third open enrollment period, is the third in a series exploring the experiences of individuals who purchase their own health insurance in the nongroup market, including coverage purchased both inside and outside the ACA’s marketplaces. It examines enrollees’ satisfaction with their health plans’ premiums, deductibles, and provider networks, their views on affordability, shopping experiences, and problems encountered with their plans.

  • Analysis of UnitedHealth Group’s Premiums and Participation in ACA Marketplaces

    Issue Brief

    This analysis looks at how a potential withdrawal by UnitedHealth Group from the Affordable Care Act (ACA) marketplaces in 2017 could impact insurer competition and premiums, finding a significant impact in some markets, though it would have a minimal effect on the average benchmark premium nationwide, The impacts of a UnitedHealth withdrawal would vary considerably by state and market area, with a more pronounced effect in rural areas. Since UnitedHealth often is not one of the lower cost plans, the effect nationally on premiums of an exit by the insurer would be modest.

  • Obamacare? Zika? Which Health Stories Americans Actually Follow

    News Release

    In his latest column for The Wall Street Journal's Think Tank, Drew Altman analyzes the Kaiser Health Policy News Index to determine which health stories in the news have broken through to the public the most in the last year. One conclusion: It wasn't the Affordable Care Act.

  • Kaiser Health Tracking Poll: April 2016

    Report

    The April Kaiser Health Tracking Poll examines the role of health care issues in the presidential election. Health care is one of the top four issues mentioned by voters when asked which issues they most want to hear candidates discuss in the campaign, but half as many cite health care as mention the economy and jobs. It also examines the public’s experiences with prescription painkiller abuse and access to mental health care, as well as their views on efforts to combat painkiller and heroin addiction. It also asks about confidence in the safety of the drinking water supply in the wake of the lead contamination crisis in Flint, Mich., and their views of the government’s performance.

  • Amid Primary Debate about Universal Coverage, Most Democrats Now Want to Expand the Affordable Care Act, Leading to Somewhat Less Favorable Views of the Law Itself

    News Release

    Voters Rank Health Care Fourth As Issue for Presidential Candidates to Discuss With the Democratic presidential primary featuring a debate about how to get to universal health coverage in the United States, the latest Kaiser Health Tracking Poll finds most Democrats want Congress to expand the Affordable Care Act, contributing to a widening gap between…

  • Aligning Eligibility for Children: Moving the Stairstep Kids to Medicaid

    Issue Brief

    The Affordable Care Act (ACA) requires that Medicaid cover children with incomes up to 133 percent of the federal poverty level (FPL) ($31,322 for a family of four in 2013) as of January 2014. Today, there are “stairstep” eligibility rules for children. States must cover children under the age of six in families with income of at least 133 percent of the FPL in Medicaid while older children and teens with incomes above 100 percent of the FPL may be covered in separate state Children’s Health Insurance Programs (CHIP) or Medicaid at state option. While many states already cover children in Medicaid with income up to 133 percent FPL, due to the change in law, 21 states needed to transition some children from CHIP to Medicaid. This brief examines how the transition of children from CHIP to Medicaid will affect children and families as well as states. The brief also looks to New York and Colorado for lessons learned from the early transition of coverage.