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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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  • How Will the Uninsured in Idaho Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Idaho, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Idaho are eligible for Medicaid or financial assistance in…

  • How Will the Uninsured in Massachusetts Fare Under the Affordable Care Act?

    Fact Sheet

    This state report explains how the ACA expands coverage in Massachusetts, including a breakdown of how many uninsured people are eligible for Medicaid, how many are eligible for financial assistance to help them buy private insurance in the new Marketplace and how many will not receive any financial assistance at all. The report also details, in specific dollar figures, the income levels at which people in Massachusetts are eligible for Medicaid or financial assistance in…

  • Open Enrollment: Insights from Medicare for Health Insurance Marketplaces

    News Release

    In the latest post in the Policy Insights series, Tricia Neuman draws on the experiences of Medicare beneficiaries during Medicare’s annual enrollment period to consider whether consumers with health insurance coverage through the Affordable Care Act’s new marketplaces will shop for a better deal during their open enrollment season. Previous columns in the Policy Insights series are also available on kff.org.

  • ACA Advertising in 2014 – Insurance and Political Ads

    Report

    This study analyzes the volume and content of political ads mentioning health care issues that aired in 2014 through Oct. 15, as well as health insurance spots promoting specific insurance products or encouraging enrollment in marketplace plans. It finds that about 14 percent of political ads in all races mention the Affordable Care Act, Obamacare or any of the law's specific provisions, mostly in a negative way.

  • In 73 Percent of Counties, Healthcare.Gov Enrollees Could Lower Their Silver Plan Premiums by Comparison Shopping

    News Release

    A new analysis from the Kaiser Family Foundation finds that in 73 percent of counties served by Healthcare.gov, people enrolled in the lowest-cost silver plan this year could save money on premiums by switching to a different silver plan in 2016. In these counties, the silver plan with the lowest premiums in 2015 is no longer the lowest-cost plan in 2016, according to the analysis. If they stay in their current plan, Healthcare.gov enrollees who…

  • Bernie Sanders, Hillary Clinton, and Medicare for All

    From Drew Altman

    In this column for The Wall Street Journal’s Think Tank, Drew Altman explores the differing positions of presidential candidates Hillary Clinton and Bernie Sanders on a single payer or Medicare-for-all health care system and whether Democratic voters consider it an important factor in the 2016 primaries.

  • 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.