Affordable Care Act

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?

The ACA MarketplaceS

In Preliminary Rate Filings, ACA Marketplace Insurers Largely Propose Double-Digit Premium Increase For 2027, Following a Steep Climb This Year 

ACA Marketplace insurers are proposing a median premium increase of 14% for 2027— indicating a likely second consecutive year of double-digit increases, according to a new analysis of preliminary rate filings in 16 states and DC. If these increases hold, typical premiums for insurers participating in the ACA Marketplaces would jump by more than one-third between 2025 and 2027.

The Average Marketplace Deductible Grew by About $1,000 Per Person in 2026, With More Enrollees Shifting to Higher-Deductible Plans as Enhanced Tax Credits Expired

The average Affordable Care Act (ACA) Marketplace deductible experienced the steepest increase in history—growing by 37% or over $1,000, from $2,759 in 2025 to $3,786 in 2026 as enhanced premium tax credits expired, according to a new KFF analysis. After the enhanced tax credits ended, many Marketplace shoppers shifted toward lower-premium, higher-deductible plans.

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  • A Final Look: California’s Previously Uninsured after the ACA’s Third Open Enrollment Period

    Report

    The Kaiser Family Foundation California Longitudinal Panel Survey is a series of surveys that, over time, tracked the experiences and views of a representative, randomly selected sample of Californians who were uninsured prior to the major coverage expansions under the Affordable Care Act (ACA). The initial baseline survey was conducted with a representative sample of 2,001 nonelderly uninsured Californian adults in summer 2013, prior to the ACA’s initial open enrollment period. After each enrollment period…

  • CMS’s Denial of Proposed Changes to Medicaid Expansion in Ohio

    Fact Sheet

    This fact sheet discusses CMS's denial of Ohio's proposed changes to its existing Medicaid expansion . It also provides an overview of the proposed changes as included in the state's Section 1115 demonstration waiver application.

  • An image of text is an excerpt from Jennifer Tolbert's quick take which reads, "While a temporary period of allowing people to self-attest to their compliance with work requirements will ease the effects for some, the more restrictive definition of medical frailty adopted by the Trump Administration will be challenging for states to implement and could lead to more people falling through the cracks and losing coverage."

    CMS Requires More Restrictive Definition of Medical Frailty in New Medicaid Work Requirements Rule

    Quick Insights

    On June 1, 2026, the Centers for Medicare and Medicaid Services (CMS) issued an interim final rule on Medicaid work requirements that adopts a restrictive definition of medical frailty—differing from states’ early expectations. The more restrictive definition of medical frailty adopted by the Trump Administration will be challenging for states to implement and could lead to more people falling through the cracks and losing coverage.

  • Pulling It Together: Writing Regulations

    Perspective

    Not since Geraldo Rivera revealed the secret contents of Al Capone's vault on national TV in the mid-80s, or more recently, sports fans awaited the LeBron James "decision" about where he would play next, have we so anxiously awaited anything as much as the draft health exchange regulations just published by HHS. Well, okay, I exaggerate for effect, but the regulations on health insurance exchanges were anxiously awaited by the health policy community. The hallmark…

  • Coverage of Preventive Services for Adults in Medicaid

    Issue Brief

    This brief highlights data from a survey of coverage of 42 recommended preventive services for adults in Medicaid fee-for-service programs as of October 2010. Medicaid programs must cover preventive services for children as part of the Early Periodic Screening, Diagnosis and Treatment (EPSDT) benefit, but generally are not required to cover such services for adults. The Affordable Care Act (ACA) provides states the opportunity to earn a one percentage point increase in their federal matching…

  • How Will Uninsured Children Be Affected By Health Reform?

    Issue Brief

    This brief examines uninsured children and how they could be affected by health reform, including estimates of how many might qualify for coverage under a Medicaid expansion, how many would be eligible for subsidies and how many would not be eligible for such help. Issue Brief (.pdf)

  • Affordability and Health Reform: If We Mandate, Will They (and Can They) Pay?

    Event Date:
    Event

    The Alliance for Health Reform and The Commonwealth Fund co-sponsored this briefing to explore the health reform proposals being considered which may impose responsibilities on both individuals and employers to have and help pay for coverage and whether they will be able to pay the amounts above the subsidies. Questions addressed include:If Congress exempts people from the coverage requirement or significantly reduces the penalties for noncompliance, will enough healthy individuals purchase new coverage to adequately…

  • How Much Will Medicaid Physician Fees for Primary Care Rise in 2013? Evidence from a 2012 Survey of Medicaid Physician Fees

    Issue Brief

    This brief presents 50-state data from the 2012 KCMU/Urban Institute Medicaid Physician Fee Survey. It estimates that average Medicaid fees to qualified physicians for Affordable Care Act primary care services will rise by 73 percent when the primary care fee increase takes effect on January 1, 2013, although there will be wide state variation. The paper presents data showing how states compare in their 2012 Medicaid fee levels, how Medicaid fees compared to Medicare fees,…