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Affordable Care Act

The ACA MarketplaceS

Change in February effectuated enrollment, by state, 2025-2026

How Has ACA Marketplace Enrollment Changed Across States in 2026?

ACA Marketplace enrollment fell this year in every state except New Mexico, which was the only state to fully replace the enhanced premium tax credits that expired last year with a state-funded subsidy, according to a new KFF analysis of effectuated enrollment data. The Marketplace enrollment decline—the first in seven years—follows several years of rapid enrollment growth and coincides with the end of the enhanced federal subsidies.

How Much and Why ACA Marketplace Premiums Are Going Up in 2027

ACA Marketplaces insurers are proposing a median premium increase of 15% in 2027, according to KFF’s updated analysis of 276 insurers with publicly available filings across all 50 states and the District of Columbia. This is the second consecutive year of double-digit premium hikes. Last year’s median nationwide proposed rate change was 18%, and the median finalized rate change was 20%. While this proposed rate change is lower than last year, it represents the second-highest requested rate change since 2018, as premium growth had been relatively flat in this market for several years.

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?

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  • Health Affairs Article: Beyond Incrementalism? SCHIP and the Politics of Health Reform

    Report

    This article examines the political and legislative history of the Children's Health Insurance Program and analyzes the lessons for policymakers who are contemplating broader health care reform. It was published online in the journal Health Affairs and was authored by Jonathan Oberlander, an associate professor, social medicine and health policy and management, at the University of North Carolina at Chapel Hill, and Barbara Lyons, a vice president of the Kaiser Family Foundation and deputy director…

  • Explaining Health Care Reform: What is Health Insurance?

    Issue Brief

    A key element in any comprehensive health reform plan is defining what health insurance is and the amount of insurance coverage people will have. There are two components to that coverage: the types of services covered (e.g., physician care, hospitalization, prescription drugs, etc.), and the cost sharing required of enrollees (e.g., the annual deductible, the copayments or coinsurance, and the maximum out-of-pocket costs for a year). The overall approach to reform drives the kinds of…

  • Oral Histories: Report From a Dental Fair for Uninsured Adults

    Report

    This report profiles patients attending a dental fair in rural Virginia to highlight the impact of lack of coverage for oral health services on adults. Uninsured adults have vast oral care needs, and untreated dental problems can have serious health, employment and social consequences, highlighting the relationship between inadequate benefits and unmet health needs. Report (.pdf)

  • An Update on CMS’s Capitated Financial Alignment Demonstration Model For Medicare-Medicaid Enrollees

    Issue Brief

    Beginning in January, 2013, the Centers for Medicare and Medicaid Services (CMS) will implement a three year multi-state demonstration to test new service delivery and payment models for people dually eligible for Medicare and Medicaid. These demonstrations will enroll full dual eligibles in managed fee-for-service or capitated managed care plans that seek to integrate benefits and align financial incentives between the two programs. On January 25, 2012, CMS issued a memorandum providing additional guidance for…

  • Kaiser Analysis: Estimated Health Insurance Rebates Under the Health Reform Law Total $1.3 Billion in 2012

    News Release

    NEWS RELEASEApril 26, 2012 Rebates Expected to Vary Significantly by State MENLO PARK, Calif. – Consumers and businesses are expected to receive an estimated $1.3 billion by this August in rebates from health insurers who spent more on administrative expenses and profits than allowed by the Affordable Care Act (ACA), finds a new analysis from the Kaiser Family Foundation of the latest estimates provided by insurers to state insurance commissioners. The rebates include $541 million…

  • Best Bets for Reducing Medicare Costs for Dual Eligible Beneficiaries: Assessing the Evidence

    Report

    With pressure mounting to slow the growth in federal health care spending, policymakers are exploring ways to reform the way care is delivered to the 9 million low-income Medicare beneficiaries who also receive Medicaid – a group that on average is sicker and frailer than other Medicare beneficiaries, and therefore receive significantly more care at greater cost. Major efforts are underway at the federal and state level to better coordinate care for this population and…

  • Expanding Medicaid to Low-Income Childless Adults Under Health Reform: Key Lessons From State Experiences

    Issue Brief

    The health reform law will expand Medicaid to millions of low-income adults, including many childless adults who have historically been ineligible for the program, necessitating one of the largest enrollment efforts in the program's history. This report, based on interviews with officials in seven states and the District of Columbia and national experts, examines lessons learned from past state experience covering childless adults through waiver and state-funded programs and profiles the programs included in the…

  • Public Reporting of Quality Outcomes: What’s the Best Path Forward?

    Event Date:
    Event

    The Affordable Care Act aims to promote higher quality care in part by rewarding – and eventually requiring – the reporting of certain quality measures. Previous efforts suggest that public reporting can add significant value. Yet there are concerns about the best way to measure outcomes and quality, the possible unintended effects of public reporting, and whether purchasers and consumers actually use the information to make choices. Panelists at this April 27 briefing co-sponsored by…

  • Challenges for the Next Obamacare Open Enrollment

    From Drew Altman

    In this column for The Wall Street Journal’s Think Tank, Drew Altman pinpoints the Affordable Care Act’s five biggest challenges heading into the second open enrollment period.