What are the odds?

The day before Notre Dame’s first football game of the season will mark the day sports betting becomes legal in Indiana.

This week, Indiana Gov. Eric Holcomb signed a bill that sets the debut date for Sept. 1.

You’ll have to be 21 and older to place a bet on events involving human competitors, such as professional and intercollegiate sports. Betting on esports and amateur youth sports will be banned.

The law will allow bets to be placed in person at licensed casinos, racinos and off-track betting satellite facilities, or by mobile device if the mobile device user first preregisters with a licensed provider.

Geofence technology will be used to make sure bets placed on mobile devices are being placed within Indiana’s borders.

“I voted against the bill. If we have casinos, casinos are a destination place, it's a place of entertainment and place to go, but I was a little fearful of the mobile app provision of the bill that allowed you to make a bet from your living room,” said Rep. Dale Devon, R-Granger.

Those reservations were not shared by Holcomb, who said, “It's happening now, and so what this does is provide that regulatory structure around it. People were doing it illegally.”

The law imposes a sports wagering tax of 9.5 percent on the adjusted gross receipts of a license holder. It’s estimated that the tax will bring in $20 million over the next two years.

Addiction treatment will also be funded with the new legality, as 3.33 percent of the tax receipts will be set aside to combat gambling addiction.

“Look, we have to make sure that people are doing this responsibly but this bill gets at that too,” Holcomb said.