
According to Keith Idec of Boxing Scene, Mayweather is expected to make at least $100 million but his take could balloon to four times that much if the event hits all of its monetary metrics. McGregor will make at least $75 million, which is five times as much as he's made from any UFC event.
McGregor has made millions from endorsement and other revenue, but he's never made this kind of money simply for fighting. His take could grow exponentially as well if the event is as big of a success as it's pacing to be.
Boxing Kingdom estimates the purses could be as high as $400 million for Mayweather and $127 million for McGregor.
The Estimated Purses For Floyd Mayweather Vs. Conor McGregor Fight Are Staggering