The Volcker Rule is section 619 of the Dodd–Frank Wall Street Reform and Consumer Protection Act. The rule was originally proposed by American economist and former United States Federal Reserve Chairman Paul Volcker in 2010 to restrict United States banks from making certain kinds of speculative investments that do not benefit their customers. It was not implemented until July 2015. Volcker argued that such speculative activity played a key role in the 2007–2008 financial crisis. The rule is often referred to as a ban on proprietary trading by commercial banks, whereby deposits are used to trade on the bank's own accounts, although a number of exceptions to this ban were included in the Dodd–Frank law.

The Dodd–Frank Wall Street Reform and Consumer Protection Act, commonly referred to as Dodd–Frank, is a United States federal law that was enacted on July 21, 2010. The law overhauled financial regulation in the aftermath of the Great Recession, and it made changes affecting all federal financial regulatory agencies and almost every part of the nation's financial services industry.