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Affordable Care Act

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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  • Medicaid Expansion Through Marketplace Premium Assistance

    Fact Sheet

    This fact sheet compares the two Medicaid premium assistance authorities (state plan option and demonstration waiver) and identifies key beneficiary protections in Medicaid expansion premium assistance programs.

  • Getting into Gear for 2014: An Early Look at Branding and Marketing of New Health Insurance Marketplaces

    Issue Brief

    Based on a review of publicly available materials as of September 2013, this brief provides an examination of the Marketplace branding strategies, websites, and marketing materials, providing insight into how consumers will be introduced to the Marketplaces and some of the key messages and approaches the Marketplaces will utilize to encourage individuals to enroll. As of September 2013, states and the federal government are on the eve of their October 1st launch of open enrollment…

  • Key Issues in State Implementation of the New and Expanded Home and Community-Based Services Options Available Under the Affordable Care Act

    Issue Brief

    This brief summarizes the key issues identified and discussed by participants in Kaiser Family Foundation’s Commission on Medicaid and the Uninsured's July 16, 2013 roundtable meeting on state adoption of the new and expanded Affordable Care Act home and community-based services (HCBS) options. While states have made overall progress in rebalancing their long-term care systems in favor of community-based care, state adoption of ACA HCBS options has been relatively slow to date, despite the growing…

  • How Buying Insurance Will Change Under Obamacare

    Perspective

    When the Affordable Care Act’s (ACA) health insurance marketplaces (also known as “exchanges”) go online this October, millions of people are expected to apply for private insurance coverage. Nobody expects the launch will be perfect, with no hitches and problems.  The law not only replaces a fragmented and confusing assortment of plan options in today’s individual insurance market, but it also integrates tax credits to help people pay their premiums, which requires an entirely new…

  • Obamacare and You: If You Are Uninsured…

    Fact Sheet

    The Affordable Care Act, also called Obamacare, creates several new ways to get health coverage. This fact sheet explains how If you are uninsured and not offered health coverage through your job, you may be able to obtain coverage through Medicaid or through a new health insurance marketplace (or exchange) in your state. It is from our Obamacare & You series.

  • Obamacare and You

    Fact Sheet

    Obamacare and You is a series of one-page papers explaining how the Affordable Care Act, also known as “Obamacare,” will affect different groups of people. Click on the links below to learn more: If You Are Uninsured  Haga clic para leer en español  If You Are Low-Income and May Qualify for Medicaid  Haga clic para leer en español If You Have a Pre-Existing Condition Haga clic para leer en español If You Buy Coverage in the Individual Market…

  • The Stakes Beyond the Halbig Lawsuit

    From Drew Altman

    In a column for The Wall Street Journal’s Think Tank, Drew Altman discusses if the legal court cases about whether the government can provide tax credits to people in the Affordable Care Act’s federal health exchanges will be perceived by the American people as a legitimate legal question or as more inside-Washington politics.

  • Medicaid Health Homes: A Profile of Newer Programs

    Issue Brief

    Under the ACA, states have a new Medicaid option to establish "health homes" designed to improve care coordination and integration and reduce costs for beneficiaries with chronic conditions. Thus far, 15 states have implemented health home programs. Following on a 2012 brief profiling Medicaid health home programs in the first six states to adopt the option, this brief describes the health home programs in the nine states that have implemented them since that time, and…

  • Where are California’s Uninsured Now? Wave 2 of the Kaiser Family Foundation California Longitudinal Panel Survey

    Report

    This second wave of the Kaiser Family Foundation's California uninsured survey assesses the impact of the Affordable Care Act to date on state residents who were uninsured prior to open enrollment. The results capture the share of previously uninsured Californians who gained coverage or remained uninsured, how they feel about and interact with their new coverage options and what barriers to getting insurance remain. The report examines breakouts by race, coverage type, and other demographic…