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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

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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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  • Claims Denials and Appeals in ACA Marketplace Plans in 2021

    Issue Brief

    This analysis of HealthCare.gov Marketplace insurers' transparency data finds that 17% of in-network claims were denied in 2021, with denial rates varying widely across insurers. Consumers appealed less than two-tenths of 1% of denied in-network claims.

  • Recent Studies Show That Medicaid Expansion Has Improved the Financial Performance of Hospitals and Other Providers, In Line With Prior Research

    News Release

    A KFF synthesis of recent studies finds that Medicaid expansion has been beneficial to the finances of hospitals and providers, driving decreases in the share of uninsured patients, increases in Medicaid-covered patients and declines in uncompensated care. By financing coverage for low-income people who are likely to otherwise be uninsured, Medicaid expansion provides potential economic benefits to the health care providers who provide care to that population. Studies suggest that hospitals experienced higher reimbursements and…

  • About 5 Million Uninsured People Could Get ACA Marketplace Coverage Without a Monthly Premium – But They Would Have to Enroll Soon

    News Release

    About 5 million uninsured people across the country could get coverage through an Affordable Care Act Marketplace health plan with virtually no monthly premium if they enroll soon, a new KFF analysis finds. In most states, open enrollment runs through January 15, with tax credits available to help eligible low- and middle-income people afford coverage. Those tax credits would offset the full monthly premium for the lowest cost plan or plans for millions of uninsured…

  • Millions of Uninsured People Can Get Free ACA Plans

    Policy Watch

    This post estimates that about 5 million uninsured people across the country could get coverage through an Affordable Care Act (ACA) Marketplace health plan with virtually no monthly premium if they enroll during the 2023 open enrollment period, which runs through Jan. 15 in most states.

  • Medicaid as a Potential New Third Rail of US Politics

    Perspective

    In this JAMA Forum column, KFF's Larry Levitt examines Medicaid's growing political importance and the potential double whammy that could hit state Medicaid programs next year with the end of the COVID-19 public health emergency and a possible simultaneous recession.

  • Navigating the Family Glitch Fix: Hurdles for Consumers with Employer-sponsored Coverage

    Issue Brief

    About 5 million people could benefit from the fix to the Affordable Care Act’s “family glitch” that allows workers offered unaffordable family coverage to get subsidies in the marketplace – if they can show they qualify. This brief looks at some of the challenges consumers may face in deciding whether to take advantage of the fix.

  • Nine Changes to Watch in ACA Open Enrollment 2023

    Policy Watch

    The 2023 Affordable Care Act (ACA) Open Enrollment period will run from November 1, 2022 to January 15, 2023 in most states, longer in some state-based marketplaces. This policy watch examines nine changes that may affect what enrollees pay for coverage, the size of tax credits for those eligible, and other changes that could affect enrollees' experiences.