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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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  • How Many of the Uninsured Can Purchase a Marketplace Plan for Less Than Their Shared Responsibility Penalty?

    Issue Brief

    For people who are uninsured and eligible for Affordable Care Act (ACA) marketplace plans, the analysis compares the cost of a premium for the lowest-cost bronze plan with the estimated individual mandate tax penalty for 2018. It finds that more than half (54% or 5.9 million) of the 10.7 million people could pay less in premiums for health insurance than they would owe as an individual mandate tax penalty for lacking coverage.

  • Individual Mandate Penalty Calculator

    Interactive

    The Individual Mandate Penalty Calculator estimates your penalty for going uninsured vs. how much you would pay for health insurance coverage on the Affordable Care Act (ACA) marketplaces.

  • The Politics of ACA Rate Hikes Will Be 2016 in Reverse

    From Drew Altman

    Democrats are expected to turn the tables and attack Republicans for rising premiums and sabotaging the Affordable Care Act. In his Axios column, Drew Altman discusses a balancing act they face which has not received attention: score political points, but run the risk of a new debate scaring the broader public and undermining the ACA by focusing on its continuing problems.

  • Approved Changes in Indiana’s Section 1115 Medicaid Waiver Extension

    Issue Brief

    On February 1, 2018, the Centers for Medicare and Medicaid Services (CMS) approved an amended extension of Indiana’s Healthy Indiana Program 2.0 (HIP 2.0) Section 1115 demonstration waiver. Indiana’s waiver initially implemented the ACA’s Medicaid expansion from February, 2015 through January, 2018 by modifying Indiana’s pre-ACA limited coverage expansion waiver (HIP 1.0). Unlike other states that implemented the ACA’s Medicaid expansion through a waiver, Indiana’s demonstration also changes the terms of coverage for non-expansion adults (low-income parents and those eligible for Transitional Medical Assistance, TMA). The February, 2018 extension continues most components of HIP 2.0 and adds some new provisions.

  • Red-State Changes Could Strengthen ACA, Medicaid

    From Drew Altman

    In an Axios column, Drew Altman discusses how, ironically, efforts by red states to move their ACA marketplaces and their Medicaid programs in  more conservative directions could end up strengthening the ACA and Medicaid politically over the longer term.