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

    Fact Sheet

    This state report explains how the ACA expands coverage in New York, 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 New York are eligible for Medicaid or financial…

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

    Fact Sheet

    This state report explains how the ACA expands coverage in South Carolina, 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 South Carolina are eligible for Medicaid or financial…

  • Flint Fallout: Water Supply Safety Now Near Top of Public’s National Health Concerns, Trailing Cancer

    News Release

    In the wake of the lead crisis affecting drinking water in Flint, Mich., the public now ranks contaminated drinking water among the most serious national health issues, trailing cancer, according to the April Kaiser Health Tracking Poll. When asked about a series of health issues facing the country, more than a third (35%) identify contaminated drinking water as “extremely serious,” behind cancer (43%) and similar to heroin abuse (35%)  and ahead of major diseases such…

  • 8 Questions & Answers about Puerto Rico

    Fact Sheet

    These slides provide a quick snapshot of Puerto Rico’s population, as well as current and upcoming issues that are impacting the island’s health care system.

  • New Survey Finds 72% of Previously Uninsured Californians Now Have Coverage, Including 78% of Those Eligible for New Affordable Care Act Options

    News Release

    For Remaining Uninsured Residents, Cost and Immigration Status Are Main Obstacles Three years after the Affordable Care Act’s coverage expansions were fully implemented in California, nearly three quarters (72%) of the state’s previously uninsured residents now have health coverage, finds the fourth Kaiser Family Foundation Longitudinal Panel Survey, which is tracking the experiences of a randomly selected group of Californian adults who were uninsured in 2013. This is similar to the share who reported having insurance…

  • Large Majorities Favor Wide Range of Policy Changes to Curb Prescription Drug Costs, Including Those That Give Government a Greater Role in Negotiating or Limiting Prices

    News Release

    Amid news reports about increases in the price for EpiPen and other drugs, the vast majority of Americans – including majorities of Democrats, Republicans and independents – support several policy changes to control the cost of prescription drugs, including some that would expand government’s role in drug pricing, the latest Kaiser Family Foundation tracking poll finds. About eight in 10 Americans say they favor allowing the federal government to negotiate with drug companies to get…

  • How Affordable Care Act Repeal and Replace Plans Might Shift Health Insurance Tax Credits

    Issue Brief

    The Affordable Care Act, also known as Obamacare, and leading replacement proposals rely on refundable tax credits to help individual market enrollees pay for premiums, although the credit amounts are set quite differently. This analysis compares estimates of an average 2020 tax credit amount under the ACA with averages under the House Republicans' American Health Care Act, introduced March 6, 2017.

  • The American Health Care Act: New House GOP Bill Summary and Interactive Maps of Its Effects on Tax Credits

    News Release

    The Kaiser Family Foundation today issued a summary of the Republican House leadership’s March 6 proposed Affordable Care Act (ACA) replacement bill, the American Health Care Act, that can be compared in 17 key policy areas to the ACA and several other proposed replacement plans. In addition, the Foundation updated its interactive maps that compare county-level estimates of premium tax credits consumers would receive under the Affordable Care Act (ACA) in 2020 with what they’d receive…

  • Poll: Early Perceptions of House Bill Show Public Thinks It Would Cover Fewer People and Raise Health Costs

    News Release

    Republicans More Likely to Expect Positive Changes Than Democrats or Independents Large Majority Favors Continued Medicaid Funding to Planned Parenthood Fielded March 6-12 as Americans were first learning about the American Health Care Act and before the Congressional Budget Office estimated its effects, the latest Kaiser Tracking Poll shows that large shares of the public expect the House Republican health care plan would result in fewer people having health insurance and higher costs for people…

  • Who Are the 7 Million Nonelderly Adults with Disabilities in Medicaid and What Would the House GOP Bill to Restructure Medicaid Financing and Repeal the Affordable Care Act Mean for Them?

    News Release

    A new brief from the Kaiser Family Foundation explains the role that Medicaid plays for nearly 7 million nonelderly adults with disabilities in the U.S. and explores what the American Health Care Act could mean for their health care and coverage. Medicaid covers more than three in 10 nonelderly adults with disabilities, including people with physical disabilities, such as cerebral palsy, multiple sclerosis, and traumatic brain or spinal cord injuries; intellectual or developmental disabilities such…