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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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  • Explaining Health Care Reform: Key Changes to the Medicare Part D Drug Benefit Coverage Gap

    Issue Brief

    On March 23, 2010, President Obama signed the Patient Protection and Affordable Care Act into law. The health reform law, as modified by the Health Care and Education Reconciliation Act of 2010 which passed the House of Representatives on March 21, 2010 and is under consideration in the Senate, makes several key changes to the Medicare Part D drug benefit to reduce Part D enrollees’ out-of-pocket liability when they reach the coverage gap, known as…

  • Uncompensated Care for the Uninsured in 2013: A Detailed Examination

    Report

    This report provides estimates of spending for uncompensated care, in 2013, just before implementation of health reform’s major coverage provisions. The report estimates the amount of uncompensated care provided, analyzes the site of care for uncompensated services, and details sources of funding for uncompensated care. These estimates provide an important baseline against which to measure major changes that are occurring under the ACA.

  • The Affordable Care Act and Insurance Coverage in Rural Areas

    Issue Brief

    Rural populations face disparities compared to metropolitan populations in health care. While rural individuals were not more likely to be uninsured than metropolitan counterparts pre-Affordable Care Act, they were poorer and less likely to have private insurance. With coverage changes in the ACA involving an expansion of Medicaid for poor and near-poor populations, decisions by states with large rural populations may cause rural residents to have disparate access to coverage, which may exacerbate cost and…

  • Medicaid Enrollment Snapshot: December 2013

    Issue Brief

    This report focuses on changes in monthly Medicaid enrollment between December 2012 and December 2013. This is a long standing report series that collects monthly Medicaid enrollment data for December (and June, not reported here) going back to 2000. While the most recent data included in this report predate preliminary data released by CMS that show the early effects of full implementation of the ACA, this report series is an important source of historical trend…

  • Strategies in 4 Safety-Net Hospitals to Adapt to the ACA

    Issue Brief

    This brief examines four safety-net hospitals to learn how they were preparing for the full implementation of the Affordable Care Act (ACA), in order to gain additional insight into the strategies being used and challenges being faced among safety-net hospitals across the country.

  • Kaiser Family Foundation Launches New Non-Profit Health Policy News Service

    News Release

    Kaiser Health News Will Provide In-Depth Reporting on Major Health Policy Issues Menlo Park, CA -- In the midst of a major federal health reform debate and the ongoing financial turmoil in the media industry, the Kaiser Family Foundation officially launched Kaiser Health News (KHN) today to provide a new source of in-depth reporting on major health issues. KHN is staffed by experienced health policy journalists and editors, and will feature contributions from a wide…

  • Potential Supreme Court Decision: Who Will Bear the Coverage “Burdens?”

    Issue Brief

    The Supreme Court is expected to reach a decision by the end of June, 2014 on the cases brought forth by Hobby Lobby and Conestoga Wood Specialties, two for profit corporations challenging the ACA’s contraceptive coverage requirement. The plaintiffs contend that the requirement that they include coverage for certain contraceptive services (emergency contraceptive pills and intrauterine devices) in the insurance plans “substantially burdens” both the corporation’s and the owners’ religious rights. During the arguments, several…

  • Advancing Opportunities, Assessing Challenges: Key Themes from a Roundtable Discussion of Health Care and Health Equity in the South

    Issue Brief

    This brief summarizes the primary themes expressed by participants of a roundtable discussion of current and future opportunities and challenges for advancing health care and health equity in the South organized by Kaiser Family Foundation’s Commission on Medicaid and the Uninsured and the Satcher Health Leadership Institute at Morehouse School of Medicine in Atlanta, Georgia.

  • Does the Affordable Care Act Cover the Uninsured?

    From Drew Altman

    Drew Altman, in The Wall Street Journal's Think Tank, discusses what a new Foundation survey finds about one of the biggest questions about the Affordable Care Act: whether it covers the uninsured.