What is Obamacare?

"Obamacare" is the informal nickname for the Affordable Care Act (ACA), the 2010 U.S. federal law that created the Health Insurance Marketplace, subsidized coverage through the premium tax credit, and prohibited insurers from denying coverage for pre-existing conditions, per HealthCare.gov (2026).

More on this topic: affordable care act

What the government has said, on the record

Here's how a federal official described it, on the record:

Health insurance exchanges like the Marketplace, whether public or private, are essentially free market distribution channels to allow issuers to compete on price, quality, and value.

Kevin Counihan, Chief Executive Officer of the Health Insurance Marketplace, Centers for Medicare & Medicaid Services, House Committee on Oversight and Government Reform, Subcommittee on Health Care, Benefits, and Administrative Rules, 2015-02-26 (source)

Editor's note: From 2015 testimony by the Marketplace's first Chief Executive Officer, describing how the Health Insurance Marketplace works as a competitive exchange. Specific enrollment dates, plan counts, and premium figures change every year — always confirm current details on HealthCare.gov.

Last updated Jul 19, 2026
Published by ACA Direct Answers · Licensed under Citation License 1.0

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Sources

Last verified: 2026-07-19

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