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.
Featured Affordable Care Act Resources
Nov 23, 2021
A summary of 10 of the major health coverage and financing provisions of the current Build Back Better Act, with discussion of the potential implications for people and the federal budget.
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Related Affordable Care Act Resources
Sep 24, 2021
In this Policy Watch we explore the potential impact of the expiration of the American Rescue Plan Act’s enhanced financial help and new eligibility for the Affordable Care Act’s health insurance Marketplace federal subsidies. While the COVID-19 relief legislation passed earlier this year provides greater subsidy assistance through 2022, Democrats in Congress are currently considering making the temporary federal help permanent or extending it as part of their planned budget reconciliation legislation.
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November 23, 2020 Issue Brief
For the third straight year, more insurers are entering the ACA Marketplaces or expanding their service area in 2021, creating more choices for consumers shopping for coverage during the 2021 open enrollment period.
November 9, 2020 Event
On Tuesday, Nov. 10, the Supreme Court will hear oral arguments on a legal challenge supported by the Trump administration that seeks to overturn the Affordable Care Act, an outcome that would have major effects throughout the health care system as the law’s provisions have affected nearly all Americans in…
November 6, 2020 Issue Brief
This issue brief describes trends in health coverage prior to the pandemic, examines the characteristics of the uninsured population in 2019, and summarizes the access and financial implications of not having coverage.
November 5, 2020 Blog
Whether new to the market or reenrolling, everyone who wants 2021 coverage through the ACA Marketplace must sign up during Open Enrollment. Here, we detail ten ways in which the 2021 ACA open enrollment period differs from enrollment periods in past years.
November 4, 2020 Issue Brief
We analyzed data from the 2018 National Health Interview Survey (NHIS) and 2018 Behavioral Risk Factor Surveillance System (BRFSS) to calculate prevalence rates of declinable health conditions. This data note looks at the share of adults ages 18-64 with declinable pre-existing conditions, with a particular focus on women.
November 2, 2020 Issue Brief
This data note presents the latest state-level data about nonelderly Medicaid adults who have disabilities but do not quality for SSI and considers the implications for their continued coverage if the ACA expansion is invalidated by the Court.
November 2, 2020 Blog
This post examines the implications of Republican voters wanting the Supreme Court to overturn the entire Affordable Care Act, but not the law’s protections for people with pre-existing conditions.
November 1, 2020 Fact Sheet
This interactive map shows the status of all Section 1332 waivers requested by states. The Affordable Care Act (ACA) allows states to apply for innovation waivers to alter key ACA requirements in the individual and small group insurance markets and can be used to shore up fragile insurance markets, address unique state insurance market issues, or experiment with alternative models of providing coverage to state residents.
October 30, 2020 News Release
Ahead of the annual Affordable Care Act (ACA) open enrollment period, the time during which consumers can shop for health plans or renew existing coverage, KFF has updated its Health Insurance Marketplace Calculator and its searchable collection of more than 300 Frequently Asked Questions about open enrollment, the health insurance marketplaces and…
October 30, 2020 Issue Brief
As the Trump administration reaches the end of its first term, this issue brief considers the landscape of approved and pending Section 1115 Medicaid demonstration waivers under this administration and how the November 2020 presidential election may impact this landscape.