The Kaiser Family Foundation (KFF) projected that average premiums on the Affordable Care Act (ACA) marketplaces would rise by 26% for the 2026 plan year, which KFF described as the largest rate increase since 2018.
January 01, 2026
high
statistical
KFF projection of marketplace premium changes for the 2026 plan year.
About 24 million Americans who do not have job-based or public insurance, such as Medicaid, rely on Affordable Care Act marketplaces to purchase health coverage.
October 09, 2025
high
statistical
Scope of people using ACA (Obamacare) insurance marketplaces in the United States.
Affordable Care Act marketplaces are channels through which individuals without job-based or public insurance can buy health insurance coverage.
October 09, 2025
high
definitional
Functional description of ACA insurance marketplaces.
A 2025 Congressional Budget Office estimate found that as many as four million people could become uninsured if premium tax credits for Affordable Care Act marketplaces are not renewed.
October 07, 2025
high
temporal
Estimate of the potential coverage impact tied to renewal of ACA marketplace premium tax credits.
For Affordable Care Act marketplaces, health insurers typically finalize premiums in October and open enrollment typically begins on November 1.
October 07, 2025
high
temporal
Regular timing of insurer rate finalization and the start of ACA marketplace open enrollment.
As of 2025, about 24 million people who do not have employer-based insurance or coverage through public programs such as Medicaid use the Affordable Care Act (ACA) marketplaces to buy health plans.
October 06, 2025
high
temporal
Scale of enrollment in ACA marketplaces among people without employer or public program coverage.