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
Potential Costs and Impact of Health Provisions in the Build Back Better Act
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
- 5 Charts About Public Opinion on the Affordable Care Act
- A Closer Look at the Uninsured Marketplace Eligible Population Following the American Rescue Plan Act
- Eligibility for ACA Health Coverage Following Job Loss
- Pre-Existing Condition Prevalence for Individuals and Families
- Building on the Evidence Base: Studies on the Effects of Medicaid Expansion, February 2020 to March 2021
- FAQs: Health Insurance Marketplace and the ACA
- Explaining Health Care Reform: Questions About Health Insurance Subsidies
- Status of State Medicaid Expansion Decisions: Interactive Map
- Preventive Services Tracker
- Tracking Section 1332 State Innovation Waivers
How Marketplace Costs and Premiums will Change if Rescue Plan Subsidies Expire
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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Private Insurers Are Expected to Pay $2.1 Billion in Rebates to Consumers This Year for Excessive Health Insurance Premiums Relative to Health Care Expenses
Private insurance companies are expecting to pay out $2.1 billion in rebates to consumers this fall, the second highest amount ever issued under the Affordable Care Act, according to a new KFF analysis. The rebates, which are calculated based on the share of premium revenues that insurance companies paid out…
News Release Read More Analysis Estimates 5.1 Million People Fall into the Affordable Care Act’s “Family Glitch”
A new KFF analysis estimates 5.1 million people nationally fall into the Affordable Care Act’s “family glitch” that occurs when a worker receives an offer of affordable employer coverage for themselves but not for their dependents, making them ineligible for financial assistance for marketplace coverage. The so-called glitch occurs because…
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The ACA Family Glitch and Affordability of Employer Coverage
This analysis estimates that 5.1 million people fall into the Affordable Care Act’s “family glitch,” which occurs when a worker receives an offer of affordable employer coverage for themselves but not for their dependents, making them ineligible for financial assistance for marketplace coverage. It explores the demographic characteristics of this group, including state-level estimates.
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Declines in Uncompensated Care Costs for The Uninsured under the ACA and Implications of Recent Growth in the Uninsured Rate
The increase in the uninsured rate in recent years, as well as loss of coverage during the pandemic, has led to attention on the consequences of being uninsured. The need for medical care to test, treat, or prevent COVID-19 has also highlighted the potential consequences of uncompensated care for uninsured people. Uncompensated care costs occur because, although people who are uninsured use less care than people with coverage, most who are uninsured have limited income or resources and cannot afford the high cost of medical care, if and when they do need or use health care.
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Sources of Payment for Uncompensated Care for the Uninsured
This brief estimates the level of public funding that was paid to help offset providers’ uncompensated care costs for the uninsured in 2017. To conduct the analysis, we rely on several secondary data sources including government budget appropriations and expenditure data for major public programs that provided funds to cover the cost of care for the uninsured, as well as analyses of secondary data sources completed by others.
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Web Briefing: Understanding the Health Coverage and Affordability Provisions in the American Rescue Plan Act
The American Rescue Plan (ARP) Act signed into law earlier this month includes a number of provisions aimed at making health coverage more accessible and affordable amid the public health and economic crises created by the COVID-19 pandemic. Join KFF at a web briefing to explain these changes and their expected impact on consumers, insurance marketplaces, and states.
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How the American Rescue Plan Act Affects Subsidies for Marketplace Shoppers and People Who Are Uninsured
This brief uses data from the American Community Survey (ACS) to provide estimates of eligibility for and the amount of financial assistance to purchase Marketplace coverage under the ARPA among both current individual market purchasers, as well as Marketplace-eligible uninsured people.
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How the American Rescue Plan Will Improve Affordability of Private Health Coverage
This brief explains the various provisions in the American Rescue Plan (ARP) that increase and expand the affordability of coverage for people enrolled in Marketplace health plans or COBRA.
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Impact of Key Provisions of the American Rescue Plan Act of 2021 COVID-19 Relief on Marketplace Premiums
This data note estimates how tax credits premiums will change for people at various ages and incomes under the temporary boost in subsidies included in the American Rescue Plan Act of 2021, the COVID-19 relief plan signed into law in March 2021.
Issue Brief Read More Updated KFF Calculator Estimates Marketplace Premiums to Reflect Expanded Tax Credits in COVID-19 Relief Legislation
KFF has updated its 2021 Health Insurance Marketplace Calculator to reflect the expanded premium tax credits available to people who purchase their own coverage through their state’s health insurance exchange as passed by Congress in the American Rescue Plan Act and expected to be signed into law soon. The calculator…
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