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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.
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This brief analyzes federal transparency data published by CMS on claims denials and appeals for Marketplace plan offered on HealthCare.gov in 2024, and finds insurers denied 19% of in-network claims. Consumers rarely appeal denied claims.
On the 16th anniversary of the Affordable Care Act’s (ACA) passage, most of the public (61%) view the law favorably, though opinions and debates remain as partisan as ever....As voters continue to grapple with the affordability of coverage and care, the partisan legacy of the ACA will almost certainly figure into debates about health care costs this fall.
In a new column, Dr. Drew Altman, KFF’s President and CEO, discusses the impact of the war in Iran and rising gas prices on voter concerns about health care costs. He writes: “Recently, we saw health care costs rise to the top of the public’s list of economic worries, ahead of food, housing, utility costs and the cost of gas….Expect gas prices to rise and health care costs to fall on the list of affordability worries while the war in Iran lasts, but then to return to the top or near the top when President Trump decides to declare the major hostilities over, the Strait of Hormuz is open, and gas prices come down….health care costs have staying power as one of the top voter concerns.”
This KFF survey is a follow-up survey of adults who had ACA Marketplace insurance in 2025. The survey examines the cost concerns and coverage changes that these 2025 Marketplace enrollees are experiencing following the expiration of the enhanced premium tax credits. The survey finds that half of returning enrollees say their health care costs are “a lot higher” and most expect to cut back on basic household expenses to afford coverage.
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 ten who specifically say their premiums are “a lot higher.”
Esta calculadora ilustra las primas (el costo mensual de su seguro) y subsidios para las personas que compran seguro médico por su propia cuenta en el mercado de seguros de salud (o de intercambio) creado por la Ley de Cuidado de Salud a Bajo Precio (Affordable Care Act, ACA, en inglés).
The Health Insurance Marketplace Calculator, updated with 2025 premium data, provides estimates of health insurance premiums and subsidies for people purchasing insurance on their own in health insurance exchanges (or “Marketplaces”) created by the Affordable Care Act (ACA).
States are facing constrained budgets, putting pressure on HIV programs, including the Ryan White HIV/AIDS Program. This Policy Watch explores how state Ryan White AIDS Drug Assistance Programs (ADAPs) are responding to these budget pressures, including by restricting eligibility and reducing the scope of services offered, actions that could led to negative health outcomes for people with HIV and lead to new HIV infections.
Adults ages 50 to 64 are disproportionately affected by the expiration of ACA enhanced premium tax credits because they make up a large number of Marketplace enrollees and premiums rise with age. Our analysis shows that older enrollees with moderate to higher incomes have been hit hardest.
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