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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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  • The Impact of the Coverage Gap for Adults in States not Expanding Medicaid by Race and Ethnicity

    Issue Brief

    The Affordable Care Act (ACA) expansion of Medicaid to adults with incomes at or below 138% of the federal poverty level (FPL) effectively became a state option following the Supreme Court decision, creating a “coverage gap” for many poor uninsured adults in states that do not expand Medicaid. This brief examines the coverage gap by race and ethnicity.

  • Implications of Emerging Waivers on Streamlined Medicaid Enrollment and Renewal Processes

    Fact Sheet

    The Affordable Care Act (ACA) significantly modernized and streamlined Medicaid enrollment and renewal processes across all states. Through major investments of time, money, and staff, most states have implemented modernized systems that transformed lengthy, paperwork driven enrollment and renewal procedures to a simplified, technology-driven experience that minimizes burdens on individuals and states. Recently approved and proposed waivers and other proposed policies include new eligibility and enrollment requirements and restrictions that run counter to the ACA’s…

  • Digging Into the Data: What Can We Learn from the State Evaluation of Healthy Indiana (HIP 2.0) Premiums

    Issue Brief

    Indiana initially implemented the ACA’s Medicaid expansion through a Section 1115 waiver in February 2015. Indiana’s waiver included important changes from federal law regarding enrollment and premiums. The initial waiver expired, and Indiana received approval for a waiver extension in February, 2018 which continues most components of HIP 2.0 and adds some new provisions related to enrollment and premiums. This brief looks at available data from the state’s evaluation of premiums prepared by The Lewin…

  • Back to the Future? A look back at High-Risk Pools

    Quick Insights

    Sen. Vance suggested moving higher-risk individuals to different insurance risk pools than healthier ones... What could such a policy mean for health coverage and costs?

  • What did Sen. JD Vance mean by ‘Reinsurance?’

    Quick Insights

    Vance’s debate comment likely refers to state reinsurance waivers, largely approved by the Trump Administration. These waivers aimed to lower unsubsidized premiums by offsetting insurer costs for very sick enrollees.

  • The Biggest Rollback in Federal Support for Health Coverage Ever

    Quick Insights

    Republicans are not talking about repealing and replacing the ACA anymore, and the budget reconciliation bill doesn't do that, at least not directly. However, the bill would restrict health insurance for many people who have been helped by the ACA, and it would be the biggest rollback in federal support for health coverage ever.