The independent source for health policy research, polling, and news.
KFF’s policy research provides facts and analysis on a wide range of policy issues and public programs.
KFF designs, conducts and analyzes original public opinion and survey research on Americans’ attitudes, knowledge, and experiences with the health care system to help amplify the public’s voice in major national debates.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the organization’s core operating programs.
This chart examines individual market enrollment data from 2011 through 2025, when enrollment reached a record high of 25.2 million people. Affordable Care Act (ACA) Marketplace enrollment increased following the enactment of enhanced premium tax credits in 2021, as more individuals became eligible for subsidies.
In his latest column, President and CEO Drew Altman discusses how, with nearly half, or about 10 million MAGA supporters and Republicans receiving coverage through the ACA Marketplaces, the policy changes and cuts being considered by Republicans to the Marketplaces will directly affect their own voters. Altman writes: "Republicans are no longer interested in repealing the ACA but seem comfortable shrinking it significantly if they can, so long as they don’t touch protections for pre-existing conditions, which is now a political third rail."
The 2023 Affordable Care Act (ACA) Open Enrollment period will run from November 1, 2022 to January 15, 2023 in most states, longer in some state-based marketplaces. This policy watch examines nine changes that may affect what enrollees pay for coverage, the size of tax credits for those eligible, and other changes that could affect enrollees' experiences.
Vance’s debate comment likely refers to state reinsurance waivers, largely approved by the Trump Administration. These waivers aimed to lower unsubsidized premiums by offsetting insurer costs for very sick enrollees.
It is worth a refresher on how the ACA protects people with pre-existing conditions. It’s also worth asking whether and how an alternative would do the same.
With Election Day just over a month away, here is a timeline of significant ACA moments.
Sen. Vance suggested moving higher-risk individuals to different insurance risk pools than healthier ones... What could such a policy mean for health coverage and costs?
Trump has long talked about making the ACA less expensive, but the question is less expensive for whom
What do new Census Bureau data say about the uninsured? The uninsured rate remained at a near historic low of 8.0 % in 2023, per the Current Population Survey.
Without the enhanced subsidies in the Inflation Reduction Act (IRA), Affordable Care Act (ACA) Marketplace enrollees in 12 of the states that use HealthCare.gov would see their annual premium payments at least double on average, according to a new KFF analysis.
© 2025 KFF