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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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  • State Marketplace Profiles: Colorado

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    Final update made on November 8, 2013 (no further updates will be made)  Establishing the Marketplace On June 1, 2011, Governor John Hickenlooper (D) signed SB 11-200 into law, establishing the Colorado Health Benefit Exchange.1  In January 2013, the Exchange announced that the online Marketplace would be called Connect for Health Colorado (C4HCO). Structure: The legislation defines Colorado’s Marketplace as a quasi-governmental organization, specifically a "nonprofit unincorporated public entity." Governance: The Marketplace is governed by a 12-member board.…

  • State Exchange Profiles: Alaska

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    Final update made on December 4, 2012 (no further updates will be made)  Establishing the Exchange On July 17, 2012, Governor Sean Parnell (R) announced that Alaska will not create a state-run health insurance exchange, and instead will allow the federal government to operate an exchange in the state.1 While a bill establishing an exchange was introduced in the 2011 legislative session and reconsidered in 2012, it failed to pass. Prior to the announcement that the…

  • State Exchange Profiles: South Dakota

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    Final update made on April 19, 2013 (no further updates will be made)  Establishing the Exchange On September 26, 2012, Governor Dennis Daugaard (R) announced that South Dakota would not establish an exchange.1However, the state intends to maintain regulatory authority over the health insurance market and perform the plan management function for the exchange.2 The decision to have a federally-facilitated exchange was made after an inter-agency work group and a taskforce of stakeholders and legislators explored…

  • State Exchange Profiles: Arizona

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    Final update made on December 4, 2012 (no further updates will be made) Establishing the Exchange  On November 28, 2012, Governor Jan Brewer (R) informed federal officials that Arizona would default to a federally-facilitated health insurance exchange.1 Prior to her decision to default, the Governor had established the Office of Health Insurance Exchange to “organize the health insurance marketplace for easier evaluation by individuals and small businesses to acquire affordable health insurance.”2 While legislation establishing a…

  • State Marketplace Profiles: Delaware

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    Final update made on October 10, 2013 (no further updates will be made) Establishing the Marketplace In July 2012, Governor Jack Markell (D) indicated that Delaware would begin planning for a State Partnership Marketplace.1  Delaware will retain plan management and consumer assistance functions, and defer other Marketplace management functionality to the federal government.2  In July 2013, the state announced that the Marketplace would be called Choose Health Delaware. The Delaware Health Care Commission, housed within the Department…

  • State Marketplace Profiles: Massachusetts

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    Final update made on September 29, 2013 (no further updates will be made) Establishing the Marketplace On April 12, 2006, former Governor Mitt Romney (R) signed into law comprehensive health reform legislation designed to provide near-universal health coverage for state residents.1  The Massachusetts health reform law became the model for national health reform. An important component of the law was the creation of the Massachusetts Health Connector, a health insurance marketplace that manages several coverage programs.…

  • State Exchange Profiles: Tennessee

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    Final update made on December 10, 2012 (no further updates will be made) Establishing the Exchange On December 10, 2012, Governor Bill Haslam (R) announced Tennessee would default to a federally-facilitated health insurance exchange.1 Prior to the announcement that the state would not operate its own exchange, the Tennessee Department of Finance and Administration established the Insurance Exchange Planning Initiative to advise the Governor and Legislature on exchange implementation. The Initiative worked closely with a…

  • State Marketplace Profiles: Iowa

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    Final update made on November 18, 2013 (no further updates will be made) Establishing the Marketplace On December 14, 2012, Governor Terry Branstad (R) informed federal officials that Iowa would pursue a State-federal Partnership Marketplace.1  Iowa will assume plan management functions in the Marketplace and will continue to perform Medicaid and CHIP eligibility determinations. The state intends to transition to a fully State-based Marketplace in 2016. Contracting with Plans: The Iowa Insurance Department (IID) is responsible…

  • State Marketplace Profiles: Rhode Island

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    Final update made on October 8, 2013 (no further updates will be made)  Establishing the Marketplace After the legislature failed to pass Marketplace legislation during the 2011 session, Governor Lincoln Chafee (I) signed Executive Order 11-09 on September 19, 2011, to establish the Rhode Island Health Benefit Exchange.1  In July 2013, Rhode Island announced that its Marketplace would be called HealthSource RI.2  Recommendations by the Rhode Island Healthcare Reform Commission largely informed the Governor’s decision to…

  • State Marketplace Profiles: New York

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    Final update made on September 30, 2013 (no further updates will be made) Establishing the Marketplace After the New York State legislature failed to pass exchange legislation, Governor Andrew Cuomo (D) signed Executive Order 42 on April 12, 2012, to establish the New York Health Benefit Exchange.1  In August 2013, the state announced that the online marketplace would be called NY State of Health.2  Structure: The Executive Order establishes the New York Health Benefit Exchange…