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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New Analysis Summarizes Recent Research on the Effects of ACA Medicaid Expansion, Providing Context for Renewed Expansion Debates in States
New federal financial incentives for Medicaid expansion and the increased reliance on Medicaid as a coverage safety net during the pandemic have renewed debate in the 12 states that have not adopted the Medicaid expansion under the Affordable Care Act. A new KFF literature review provides context for these expansion…
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Building on the Evidence Base: Studies on the Effects of Medicaid Expansion, February 2020 to March 2021
This report summarizes evidence from nearly 200 studies on the effects of Medicaid expansion published between February 2020 and March 2021. These studies generally find beneficial impacts of expansion across a range of areas.
Report Read More Analysis Suggests Health Insurers Remained Profitable Across Markets Amid Pandemic in 2020
A new analysis of health insurers’ financial data suggests that they remained profitable across markets in 2020 due in part to an unprecedented decrease in health spending and utilization in the spring as the COVID-19 pandemic led to massive shutdowns.
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Health Insurer Financial Performance in 2020
This analysis examines insurers’ financial data across markets through the end of 2020. It finds that average margins remained relatively high compared to recent years, suggesting many insurers remained profitable even as health spending rebounded and COVID-19 cases surged in the fall and winter.
Issue Brief Read More What Are Some Policy Options for Reaching the 2.2 Million Uninsured People in the ACA’s “Coverage Gap”?
A new KFF issue brief explores several potential policy options that would help close the Affordable Care Act’s “coverage gap,” including providing further new incentives for states to expand Medicaid, creating a new “public option” or extending ACA Marketplace premium subsidies to low-income people who don’t currently qualify for federal…
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Filling the Coverage Gap: Policy Options and Considerations
This issue brief examines some of the other options policymakers may consider to extend coverage to people in the gap, including increased fiscal incentives for states, a narrower public option, and making people with incomes below the poverty level eligible for enhanced ACA premium subsidies.
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Data Note: 2021 Medical Loss Ratio Rebates
Private insurance companies expect to pay $2.1 billion in rebates to consumers in 2021 due to excessive premiums in recent years.
Issue Brief Read More 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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