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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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  • Safety-Net Emergency Departments: A Look at Current Experiences and Challenges

    Issue Brief

    Safety-net hospital emergency departments (EDs) are an important part of our health care system, especially, but not only, for the uninsured and others with low income. With multiple major changes unfolding in our system today, including the development of new models of health care delivery, payment reforms, expanded insurance coverage, and increasing demand for primary care access, safety-net EDs are a sort of crucible in which these shifts and transitions can be seen playing out.…

  • Majority of Public Says Congress Should Act to Close Gaps if the Supreme Court Bars Financial Help for Purchasing Insurance in States Relying on healthcare.gov; Most in Potentially Affected States Want Their State To Set Up Its Own Marketplace if Needed

    News Release

    Views Mixed on Changes to Definition of Full-Time Work For Employer Mandate, with More Opposed than Supportive, And a Third Saying They Don't Know Enough to Say Public Remains Divided Over Next Steps for the Affordable Care Act, Though Most Expect Major or Minor Changes under GOP Congress this Year Though few Americans are paying attention to the pending Supreme Court case over whether the health care law says that people in all states can…

  • Proposed Medicaid Expansion in Tennessee

    Fact Sheet

    This fact sheet describes Tennessee’s 1115 waiver demonstration project, Insure Tennessee, which expands the State’s Medicaid program under the Affordable Care Act.

  • The Cost of Care with Marketplace Coverage

    Issue Brief

    This brief and accompanying slides examine cost sharing - deductibles, copayments and coinsurance - in 2015 insurance plans sold on the Affordable Care Act's (ACA) federally-facilitated marketplaces. The analysis looks at out-of-pocket limits, as well as cost sharing for hospital stays, physician visits, emergency room visits, and prescription drugs, for plans across the metal levels (platinum, gold, silver and bronze).

  • New Kaiser Survey Finds Eleven Million Newly Insured Adults As of Mid-December, But Nearly Half Who Remained Uninsured One Year After Full Implementation of the Affordable Care Act Were Eligible for Medicaid or Marketplace Tax Credits

    News Release

    Many Of The Remaining Uninsured Say They Didn’t Seek Coverage or Considered It Too Expensive, While Others Were Told (Or Believed) They Were Not Eligible About 11 million adults had become newly insured under the Affordable Care Act by mid-December 2014, according to a new national survey of more than 10,000 adults by the Kaiser Family Foundation.  Nearly half of the approximately 30 million adults who remained uninsured were eligible for assistance under the law,…

  • Trends in Medicaid Spending Leading up to ACA Implementation

    Issue Brief

    This paper presents data on Medicaid spending during the years leading up to the implementation of the Affordable Care Act (ACA). It uses administrative data to first examine overall spending trends and trends by service type. We then draw on additional data to analyze per enrollee spending growth during this period, both by service type and by eligibility group, to understand what drove Medicaid spending.

  • New Reports Analyze Cost Sharing in 2015 ACA Marketplace Plans in 37 States

    News Release

    Charts Examine Savings from Subsidies at Stake in U.S. Supreme Court Case Cost-sharing subsidies under the Affordable Care Act can substantially reduce deductibles and other cost sharing for people with low incomes purchasing coverage in the federally-facilitated insurance marketplace serving 37 states, a new analysis by the Kaiser Family Foundation finds. These government subsidies, which are also available in plans sold on state-run marketplaces, are different from premium tax credits. Both are at stake in…

  • Are Uninsured Adults Who Could Gain Medicaid Coverage Working?

    Fact Sheet

    As additional states consider whether to implement the ACA Medicaid expansion, some have raised pursuing waiver authority to tie Medicaid eligibility for adults under the expansion to work requirements. This fact sheet profiles uninsured adults who could gain Medicaid coverage under the ACA by their relationship to the workforce and job-based coverage.

  • Consumer Assets and Patient Cost Sharing

    Issue Brief

    Higher cost sharing in private insurance has been credited with helping to slow the growth of health care costs in recent years. For families with low incomes or moderate incomes, however, high deductibles, out-of-pocket limits and other cost sharing can be a potential barrier to care and may lead these families to significant financial difficulties. This issue brief uses information from the Federal Reserve Board's 2013 Survey of Consumer Finances to look at how household…

  • Medicare Spending Cuts and Hospital Productivity Gains

    From Drew Altman

    In this column for The Wall Street Journal's Think Tank, Drew Altman and guest co-author Dana Goldman examine hospital productivity gains, and what they may mean for hospitals’ ability to absorb spending reductions.