USAspending.gov is a database of spending by the United States federal government.

Around the time of the Federal Funding Accountability and Transparency Act of 2006's passage, OMB Watch, a government watchdog group, was developing a site that would do essentially everything the legislation required.

[1] Gary Bass, director of OMB Watch, contacted Robert Shea, associate director of the OMB, offering to help with development of the new site.

The Federal Funding Accountability and Transparency Act of 2006 delegated responsibility for creating the website to the Office of Management and Budget.

On May 9, 2017, Steven Mnuchin, the United States Secretary of the Treasury, announced that he updated the site, providing a much broader view of government spending.