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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

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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  • Quick Take: Timing Matters: States Waiting for a Supreme Court Decision to Plan an Exchange

    Fact Sheet

    State-based health insurance exchanges are an important component of the Patient Protection and Affordable Care Act (ACA) designed to extend subsidized private health insurance coverage to millions of Americans by 2014. Though projections show exchange enrollment could grow to 20 million individuals nationally, aggressive planning on the part of states will be necessary to meet implementation timelines—exchanges must be fully operational by January 1, 2014 and the Department of Health and Human Services will begin…

  • Emerging Medicaid Accountable Care Organizations: The Role of Managed Care

    Issue Brief

    This brief examines efforts by a number of states to set up Accountable Care Organizations (ACOs) within their Medicaid programs. An ACO is a provider-run organization in which participating providers are collectively responsible for the care of an enrolled population, and may share in any savings associated with improvements in the quality and efficiency of care. The structure of Medicaid ACO initiatives is influenced by individual states’ experience with managed care, other existing care delivery…

  • Abortion Coverage in the ACA Marketplace Plans: The Impact of Proposed Rules for Consumers, Insurers and Regulators

    Issue Brief

    On November 7, 2018, a day after the 2018 midterm elections, the Trump Administration issued a proposed regulation to address “Exchange Program Integrity.” A major element of this proposed rule would affect insurers, consumers, and state insurance regulators in the states that either allow or require abortion coverage. The Affordable Care Act (ACA) allows states to ban plans from offering abortion as a benefit on their Qualified Health Plans (QHPs) and requires plans that cover…

  • If the Affordable Care Act is Struck Down, Nearly All Americans Would Be Affected in Some Way

    News Release

    The Affordable Care Act’s changes to the nation’s health care system are so widespread that nearly all Americans would be affected in some way if a federal judge’s decision ruling the entire law unconstitutional is upheld, according to a new analysis from KFF (the Kaiser Family Foundation). While the changes to the individual insurance market – including protections for people with pre-existing conditions, creation of insurance marketplaces, and premium subsidies for low and modest income…

  • Coverage at Work: The Share of Nonelderly Americans with Employer-Based Insurance Rose Modestly in Recent Years, but Has Declined Markedly Over the Long Term 

    News Release

    An improving economy and the Affordable Care Act’s individual mandate may be behind a modest increase in the share of Americans with job-based health insurance in recent years, but the long-term trend remains a downward one, according to a new KFF analysis. Data from the federal National Health Interview Survey show the share of the nonelderly population covered by workplace plans rose from 56.3 percent in 2013 to 58.4 percent in 2017. That was still…

  • “Partial” Medicaid Expansions Could Limit States’ Spending But Cover Fewer People at a Higher Federal Cost Compared to Traditional ACA Expansions

    News Release

    If states were able to receive enhanced Affordable Care Act matching funds for “partial” expansions of Medicaid, fewer people would get health coverage and the federal government would spend more, compared to a traditional expansion under the law, KFF explains in a new brief. The explainer describes how a partial expansion would differ from a traditional ACA Medicaid expansion and summarizes some of the expected effects. It also documents which states have sought federal approval…

  • Getting into Gear for 2014: Shifting New Medicaid Eligibility and Enrollment Policies into Drive

    Report

    On January 1, 2014, many key provisions of the Affordable Care Act (ACA) will start to go into effect, including the expansion of Medicaid to low-income adults and the launch of new Medicaid eligibility and enrollment processes, which are designed to move toward a coordinated enrollment system across health coverage programs, including Medicaid, CHIP, and the new Health Insurance Marketplaces. Over the past year, states have made steady and significant progress preparing for these changes,…

  • Webinar for Journalists: How the Affordable Care Act Affects Baby Boomers and Medicare Beneficiaries

    Event Date:
    Event

    As part of the "Covering Health Reform" series, this webinar focused on the major changes facing older people. The Foundation's Associate Director of the Program on Medicare Policy, Juliette Cubanski and Senior Fellow Karen Pollitz discussed how the Affordable Care Act impacts Medicare benefits and beneficiaries, as well as the ACA's role for baby boomers who are not yet 65 and eligible for Medicare.