More than a decade after its enactment, tens of millions of people nationwide rely on coverage options created through the Affordable Care Act of 2010 (ACA). The law has survived multiple court challeges at the U.S. Supreme Court and repeated attempts by Republicans in Congress to repeal it. Subsequent legislation has scaled back some aspects of the law and expanded others, including by the COVID-19 relief bill, the American Response Plan Act of 2021. This page highlights relevant analysis about the ACA and proposed and enacted changes to it..

For information about ACA Marketplace Open Enrollment, including fact sheets and 300+ FAQs, visit our collection of resources on Understanding Health Insurance.

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Analysis: Individual Market Insurers Experienced Their Best Financial Year under the ACA in 2017, Though Subsequent Political and Policy Changes Complicate the Outlook for Future Years

Insurers in 2017 had their best financial year selling individual market health insurance since the Affordable Care Act began requiring guaranteed access to coverage for people with pre-existing conditions in 2014, though recent political and policy changes create new challenges for insurers trying to succeed in this market, new Kaiser…

New KFF Resource Tracks Proposed 2019 Marketplace Premiums By State

The Kaiser Family Foundation today launched a tracker to monitor preliminary 2019 premiums in the Affordable Care Act’s marketplaces as insurers file rate information with state regulators. Beginning with data from eight states (Maine, Maryland, New York, Oregon, Rhode Island, Vermont, Virginia and Washington) plus the District of Columbia, the tracker shows…

Short-Term Limited Duration Plans and HIV

Given the Trump Administration’s promotion of short-term limited-duration (STLD) health insurance policies, this brief examines what they mean for people with HIV. The analysis assesses whether people with HIV could enroll in STLD plans by applying to 38 plans across five states and getting in each case. It also assesses whether such plans could meet basic HIV care and treatment needs for someone diagnosed once enrolled. This finding takes on new importance in light of the Administration’s decision not to defend the ACA and to argue for eliminating pre-existing condition protections.

Kaiser Health Tracking Poll – July 2018: Changes to the Affordable Care Act; Health Care in the 2018 Midterms and the Supreme Court

The July 2018 Kaiser Health Tracking Poll finds that a candidate’s position on continuing coverage for pre-existing conditions tops voters’ list of priorities when it comes to who they’ll vote for in the 2018 midterms. Additionally, 6 in 10 Americans say President Trump and his administration are trying to make the Affordable Care Act fail, and about half say that this is a bad thing.

Individual Mandate Penalty Calculator

The Individual Mandate Penalty Calculator estimates your penalty for going uninsured vs. how much you would pay for health insurance coverage on the Affordable Care Act (ACA) marketplaces.

How the Elections Could Put the Brakes on Anti-ACA Plans

In this Axios column, Drew Altman examines the role of health care in Virginia’s elections and the referendum on Medicaid expansion in Maine. His assessment: the elections and the referendum will have a bigger impact on upcoming policy debates about cutting Medicaid to pay for tax cuts, and state interest in Medicaid expansion, than on upcoming elections. 

Kaiser Health Tracking Poll – Late Summer 2018: The Election, Pre-Existing Conditions, and Surprises on Medical Bills

The latest Kaiser Health Tracking Poll continues to find pre-existing conditions as a widespread concern with most Americans saying it is very important that the Affordable Care Act’s (ACA) protections for people with pre-existing conditions remain law. With health care costs continuing to be a major topic in the 2018 campaigns, the poll looks at the public’s experiences with unexpected medical bills and finds that this tops a list of possible problems people could face. In addition, the poll examines the public’s views of President Trump’s contentious relationship with prescription drug companies.

How Affordable are 2019 ACA Premiums for Middle-Income People?

This analysis finds that Affordable Care Act marketplace premiums are least affordable for older adults who earn too much to qualify for federal subsidies, especially those living in rural areas where premiums are highest. The analysis also discusses a variety of state and federal proposals that seek to lower premiums for middle-class people buying their own insurance who are ineligible for ACA subsidies.

KFF Health Tracking Poll – March 2019: Public Opinion on the Domestic HIV Epidemic, Affordable Care Act, and Medicare-for-all

This poll explores the public’s attitudes towards, and experiences with, HIV/AIDS in the U.S. in light of President Trump’s announcement of his plan to significantly reduce new HIV infections in the U.S. within ten years. The poll also probes the public on why they may support or oppose a national health plan and find that people’s responses tend to echo the messages emphasized by both sides of the debate.

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Filling the need for trusted information on national health issues, the Kaiser Family Foundation is a nonprofit organization based in San Francisco, California.