Affordable Care Act

A new KFF analysis finds that a congressional proposal to significantly cut federal spending on the Affordable Care Act’s Medicaid expansion could reduce total Medicaid spending by up to nearly one-fifth, or $1.9 trillion, over a 10-year period, and end Medicaid coverage for as many as 20 million people.The impacts…

This analysis examines the potential impacts on states and Medicaid enrollees of eliminating the 90% federal match rate for the Affordable Care Act (ACA) expansion. Eliminating the federal match rate for adults in the Medicaid expansion could reduce Medicaid spending by nearly one-fifth ($1.9 trillion) over a 10-year period and up to nearly a quarter of all Medicaid enrollees (20 million people) could lose coverage.

This page displays an interactive map of the current status of state decisions on the Affordable Care Act’s Medicaid expansion. Additional Medicaid expansion resources are listed (with links) below the map.

Health coverage enrollment through the Affordable Care Act (ACA) marketplaces now exceeds 24 million people, a dramatic increase in recent years fueled largely by enhanced premium aid, which started in 2021 as part of the American Rescue Plan Act and extended through 2025 under the Inflation Reduction Act. But, with…

This analysis and interactive map illustrate how much more enrollees in Affordable Care Act (ACA) Marketplace plans would pay in premiums at the congressional district level if the enhanced subsidies were to expire in 2026 as under current law. The tool presents scenarios for an older couple who would lose subsidy eligibility due to their income level and for a single person with a $31,000 income. It also presents net average premium payment increases in each district in states that use Healthcare.gov.

In a new column, KFF President and CEO Drew Altman discusses what President Trump’s decision to pull back the broad freeze in federal grant funding might portend for his response to future policies in health that prove controversial or unpopular.

HealthCare.gov insurers denied nearly one out of every five claims (19%) submitted for in-network services and an even larger share (37%) share of claims for out-of-network services in 2023, a new KFF analysis finds. The analysis examines the main source of publicly available data on claims denials and appeals for…

This brief analyzes federal transparency data released by the Centers for Medicare and Medicaid Services (CMS) on claims denials and appeals for non-group qualified health plans (QHPs) offered on HealthCare.gov in 2023. It finds that HealthCare.gov insurers denied nearly one out of every five claims (19%) submitted for in-network services. Information about the reasons for denials is limited, and few consumers appeal claims denials.