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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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  • New Evidence Health Spending Is Growing Faster Again

    From Drew Altman

    In this column for The Wall Street Journal’s Think Tank, Drew Altman discusses new Census Department survey data showing higher health spending growth over the last four economic quarters, and raises the question: is the health spending slowdown over?

  • New Evidence Health Spending Is Growing Faster Again

    News Release

    In his latest column for The Wall Street Journal’s Think Tank, Drew Altman discusses new Census Department survey data showing higher health spending growth over the last four economic quarters, and raises the question: is the health spending slowdown over? All previous columns by Drew Altman are available.

  • Medicaid Delivery System and Payment Reform: A Guide to Key Terms and Concepts

    Fact Sheet

    There is wide state variation in Medicaid health care delivery and payment systems, as states design and combine service delivery models and payment approaches in a multitude of ways. To help those interested in understanding the diversity of Medicaid reform initiatives underway or in development in states across the country, this guide defines key terms.

  • What about premiums I already paid in 2021?

    FAQs

    The higher premium subsidies are in effect for the 2021 and 2022 plan years.  For premiums you already paid in 2021, before the new law passed, you can claim the increased tax credit when you file your federal income tax return.

  • What happens after the COBRA subsidies end in September?

    FAQs

    You can continue on COBRA unsubsidized until your 18 months of COBRA eligibility ends. In addition, you will have the option to enroll in marketplace coverage when the subsidy ends in September.  Loss of the COBRA subsidy will make you eligible for a special enrollment period (SEP) to sign up for marketplace coverage.

  • Declines in Uncompensated Care Costs for The Uninsured under the ACA and Implications of Recent Growth in the Uninsured Rate

    Issue Brief

    The increase in the uninsured rate in recent years, as well as loss of coverage during the pandemic, has led to attention on the consequences of being uninsured. The need for medical care to test, treat, or prevent COVID-19 has also highlighted the potential consequences of uncompensated care for uninsured people. Uncompensated care costs occur because, although people who are uninsured use less care than people with coverage, most who are uninsured have limited income or resources and cannot afford the high cost of medical care, if and when they do need or use health care.

  • Health Spending for 60-64 Year Olds Would Be Lower Under Medicare Than Under Large Employer Plans

    Issue Brief

    During the presidential campaign, President Biden proposed to lower the age of Medicare eligibility from 65 to 60. This analysis uses claims data for covered medical services from both large employer plans and traditional Medicare to illustrate the potential spending effects of using Medicare payment rates in lieu of higher rates paid by employer plans for people 60-64 who shift from large employer plans to Medicare.