Affordable Care Act

The ACA MarketplaceS

What We Know about Trump’s $500 ACA Checks and the User Fees Funding Them

This analysis examines the $500 checks that the Trump administration is sending to some Affordable Care Act Marketplace enrollees and the user fees that are paying for them. The checks are going to about 1 million enrollees in the 30 states that rely on the federal HealthCare.gov Marketplace who are not receiving any tax credits this year.

Individual Market Enrollment Declined by 18% Since June 2025

Individual Market Enrollment Fell 18%, Suggesting Continued ACA Marketplace Losses

Enrollment in the individual health insurance market fell by 18%—over 4.6 million people—from 25.2 million in June 2025 to 20.5 million in June 2026. Falling individual market enrollment suggests further decline in ACA Marketplace enrollment this year, since Marketplace enrollees represent the vast majority of individual market coverage. The enrollment decline coincides with the expiration of the enhanced premium tax credits and other policy changes that are expected to reduce enrollment.

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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  • How ACA Repeal and Replace Proposals Could Affect Coverage and Premiums for Older Adults and Have Spillover Effects for Medicare

    Issue Brief

    This brief explains the key AHCA provisions that would reshape the private market to more closely resemble the pre-Affordable Care Act period, and the effects of these changes on adults ages 50-64. The brief also discusses how changes to Medicaid could affect older, low-income adults, and how an increase in the number of uninsured older adults could have implications for the Medicare program in the future.

  • State Data: What Has Happened to Health Coverage and Financing Under the Affordable Care Act?

    News Release

    As Congress presses forward with efforts to repeal and replace the Affordable Care Act, a new interactive map from the Kaiser Family Foundation provides a window into the changes in health insurance coverage and financing in each state under the 7-year-old law. The ACA increased enrollment in health insurance by expanding Medicaid, offering tax credits to low- and middle-income marketplace enrollees and reforming insurance market rules concerning coverage for people with pre-existing health conditions. Map…

  • Favorability of the Affordable Care Act Tops 50%, While Across Many Measures, Majorities Oppose the Republican Plan to Replace It

    News Release

    Three-Quarters of the Public, Including Most Republicans, View Medicaid Favorably; Most Oppose Federal Funding Cuts to States As the Senate prepares to vote on the Republican bill to repeal and replace the Affordable Care Act and cap federal Medicaid funding, a new Kaiser Family Foundation Tracking Poll finds most Americans oppose the Republican plan and many of its key provisions. A majority of Republicans, however, continue to support the Republican plan, though by a significantly…

  • Findings from the Field: Medicaid Delivery Systems and Access to Care in Four States in Year Three of the ACA

    Issue Brief

    Based on case studies and focus groups, this brief reviews delivery systems and access to care for Medicaid enrollees in Colorado, Connecticut, Kentucky, and Washington as of Spring 2016. The findings provide an on-the-ground view of Medicaid delivery systems and enrollees’ experiences accessing care three years after implementation of the Medicaid expansion. This brief builds on previous reports that examined states’ preparation for implementation prior to the initial ACA open enrollment period and their experiences…

  • Analysis: Strong Favorable Views of ACA Increased in Spring 2017, Strong Unfavorable Views Remain Flat

    News Release

    Since the passage of the Affordable Care Act in 2010, Kaiser Family Foundation polling has found the public divided in their overall views of the law and in the intensity of their opinions: For seven years, the share of the public holding strongly unfavorable views of the law has outnumbered the share with strongly favorable views. A new analysis of Kaiser Family Foundation polling data finds that intensity gap started to close in spring 2017, as…

  • How the Loss of Cost-Sharing Subsidy Payments is Affecting 2018 Premiums

    Issue Brief

    This analysis of 32 states and Washington, D.C., tracks data on 2018 Affordable Care Act (ACA) marketplace premium increases that insurers directly attributed to the end of cost-sharing reduction payments, which reimburse insurers for providing marketplace health plans with reduced out-of-pocket costs for lower-income people. Following months of uncertainty, the Trump administration announced on Oct. 12 that the payments would be discontinued immediately, although insurers must still offer the subsidized coverage.

  • ANALYSIS: ACA Marketplace Premiums Rise Substantially in 2018, But Many Will Pay Less for Coverage

    News Release

    Premiums will rise substantially in 2018 Affordable Care Act marketplace plans for states using HealthCare.gov, but in many cases, people receiving premium tax credits will pay less than they did in 2017, a new Kaiser Family Foundation analysis finds. The new analysis includes county-level interactive maps charting premium changes of lowest-cost gold, silver, and bronze plans for consumers with and without premium tax credits in the 2018 HealthCare.gov marketplaces. For people not eligible for tax…

  • New Individual Mandate Penalty Calculator Helps Consumers Estimate Their Penalty for Being Uninsured in 2018

    News Release

    A new individual mandate penalty calculator from the Kaiser Family Foundation allows consumers to estimate how much they would owe as a tax penalty for lacking health coverage in 2018, and to compare that amount to the cost of the least expensive 2018 Affordable Care Act marketplace plan in their local area. Using household income, family size, ages of family members, and zip code data, the tool provides a projection of an individual’s penalty for…