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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

Enhanced Premium tax credits

2025 KFF Marketplace Enrollees Survey

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

Timely insights and analysis from KFF staff

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  • This chart shows that almost 1,300 hospitals have been penalized for high readmissions rates every year.

    10 Years of Hospital Readmissions Penalties

    Feature

    Over the 10-year lifetime of a Medicare program aimed at reducing hospital readmissions, 93% of eligible hospitals have been penalized at least once. Hospital readmissions have become less frequent, and most experts attribute that partly to the financial threat of the penalties, though other factors likely contributed to the improvements.

  • People With HIV in Non-Medicaid Expansion States: Who Could Gain Coverage Eligibility Through Build Back Better or Future Expansion?

    Issue Brief

    In this analysis, we explore the implications of the Build Back Better Act's current coverage provisions for people with HIV in select non-expansion states. We estimate the size of the population that could gain eligibility as well as their socio-demographic characteristics, examine their affordability barriers and assess the potential impact on the Ryan White HIV/AIDS Program. We also explore what Medicaid expansion could mean in these non-expansion states for people with HIV.

  • Data Note: Are Nonprofits Requesting an Accommodation for Contraceptive Coverage?

    Issue Brief

    The Affordable Care Act (ACA) requires most private health insurance plans to provide coverage for a broad range of preventive services, including most contraceptives for women. This policy was at the center of a Supreme Court case brought forward by for-profit corporations (Hobby Lobby and Conestoga) that successfully claimed that the contraceptive coverage requirement violated their religious rights. Last month, the Supreme Court agreed to hear yet another challenge (Zubik v Burwell) to the contraceptive coverage requirement, this time brought by nonprofit corporations, claiming that the accommodation established by the federal government for religiously affiliated nonprofit employers with objections to contraception violates their religious rights.

  • States with Section 1115 ACA Expansion Waivers, December 2015

    Feature

    This slide shows the current status of state decisions to use Section 1115 waivers to expand Medicaid. A total of 31 states including DC have adopted the ACA Medicaid expansion, including 6 states with ACA 1115 ACA expansion waivers. AZ has a pending waiver application that seeks changes to its expansion. MT and NH’s waivers will take effect on 1/1/16. PA originally expanded through a waiver but subsequently transitioned to a state plan amendment. TN and UT have debated waiver proposals which have not been approved by their state legislatures or submitted to CMS.

  • Bernie Sanders, Hillary Clinton, and Medicare for All

    From Drew Altman

    In this column for The Wall Street Journal’s Think Tank, Drew Altman explores the differing positions of presidential candidates Hillary Clinton and Bernie Sanders on a single payer or Medicare-for-all health care system and whether Democratic voters consider it an important factor in the 2016 primaries.

  • Bernie Sanders, Hillary Clinton, and Medicare for All

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman explores the differing positions of presidential candidates Hillary Clinton and Bernie Sanders on a single payer or Medicare-for-all health care system and whether Democratic voters consider it an important factor in the 2016 primaries. All previous columns by Drew Altman are online.