Skip to main content
Thursday, November 12, 2026Nov 12

Gambling industry predicts $10 billion will be bet on March Madness, most illegally

FILE - In this March 11, 2018, file photo, Houston guard Rob Gray, front left, grabs a rebound in front of Cincinnati forward Gary Clark (11) during the first half of an NCAA college basketball championship game at the American Athletic Conference tournament, in Orlando, Fla. America's gambling industry predicts $10 billion will be bet on the March Madness college basketball tournament — nearly all of it illegally or off-the-books. That's one of the reasons the American Gaming Association favors the full legalization and regulation of sports betting in the United States. (AP Photo/Phelan M. Ebenhack, File)
FILE - In this March 11, 2018, file photo, Houston guard Rob Gray, front left, grabs a rebound in front of Cincinnati forward Gary Clark (11) during the first half of an NCAA college basketball championship game at the American Athletic Conference tournament, in Orlando, Fla. America's gambling industry predicts $10 billion will be bet on the March Madness college basketball tournament — nearly all of it illegally or off-the-books. That's one of the reasons the American Gaming Association favors the full legalization and regulation of sports betting in the United States. (AP Photo/Phelan M. Ebenhack, File) FILE - In this March 11, 2018, file photo, Houston guard Rob Gray, front left, grabs a rebound in front of Cincinnati forward Gary Clark (11) during the first half of an NCAA college basketball championship game at the American Athletic Conference tournament, in Orlando, Fla. America's gambling industry predicts $10 billion will be bet on the March Madness college basketball tournament — nearly all of it illegally or off-the-books. That's one of the reasons the American Gaming Association favors the full legalization and regulation of sports betting in the United States. (AP Photo/Phelan M. Ebenhack, File)

America’s gambling industry predicts $10 billion will be bet on the March Madness college basketball tournament – nearly all of it illegally or off-the-books.

That’s one of the reasons the American Gaming Association favors the full legalization and regulation of sports betting in the United States.

The U.S. Supreme Court is weeks away from ruling on New Jersey’s challenge to a law limiting legal sports betting to just four states: Delaware, Montana, Nevada and Oregon, and a ruling that legalizes sports betting nationwide could provide new revenue opportunities for cash-strapped state governments, as well as casino companies.

The group found 54 million people – or about a quarter of the U.S. adult population – participated in a sports betting pool last year, spending $18 billion on entry fees. That includes 24 million who filled out basketball bracket pools and spent $2.6 billion on entry fees.

It also conducted a survey that found roughly two-thirds of U.S. states make it illegal to participate in sports betting pools if money is involved. Enforcing those laws, however, has not been a priority for law enforcement.