NSAC chairman Anthony Marnell told ESPN the commission approved the request as an item on its consent agenda on Wednesday.
The bout came together organically, as McGregor first spoke about his desire to fight Mayweather and then they began going back-and-forth on social media.
McGregor also took another swipe at the American on Instagram on Monday, posting a photo of Mayweather in the gym alongside a cheeky caption.
For "The Notorious" McGregor, the opportunity is unprecidented as the UFC champion gets to trade blows with the best boxer of a generation on his pro debut. Now, with the fight official for an August 26 date in Las Vegas, it's time to take the whole betting part of the battle seriously.
It is a stunning development given that Mayweather, the greatest boxer of his era, had said he was retired after compiling a 49-0 pro record from 1996 through 2015.
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Attorney General Jeff Sessions' testimony to the Senate Intelligence committee Tuesday will be open to the public. The newspaper noted that it doesn't exclude the possibility of recordings created by another entity.
"The Mayweather Tour has been postponed because Mayweather has signed the contract for the McGregor Fight and serious training has started", said a statement from the organisers in Accra.
"It'll be at the T-Mobile Centre in Vegas, it'll be at 154-pounds (69.8kg), they'll wear 10-0z (283g) gloves, it'll be in a ring". But the UFC and McGregor have made T-Mobile Arena their home.
The fight is expected to be a pay-for-view blockbuster.
McGregor was last seen in the cage in November, when he artfully clobbered Eddie Alvarez to claim the UFC lightweight title. It comes less than a month before Gennady Golovkin and Canelo Alvarez meet in a highly anticipated fight September 16 that could rival it for pay-per-view buys.