Jake Paul will earn at least $690,000 (£500,000) from his fight with Ben Askren on Saturday night.
Paul will make the walk to the ring for the third time as a professional to take on debutant Askren who made his name in mixed martial arts.
And the YouTube star will earn slightly more than his opponent who is guaranteed a minimum $500,000 (£360,000).
Both fighters in the main event will earn far more when their share of the pay-per-view revenue is taken into account.
Paul, for example, was guaranteed only £450 for fighting Nate Robinson last November but claims to have ultimately earned £10million.
The highest-earner on the card in terms of a guaranteed purse is former world champion Regis Prograis who will earn at least $850,000 for his fight against Ivan Redkach who will take home $250,000.
Former cruiserweight world champion Steve Cunningham will earn $150,000 for stepping in to fight former UFC heavyweight Frank Mir ($350,000)
And nightclub owner Joe Fournier will earn $200,000 for his fight against Colombian singer Reykon who will pocket $80,000.
Paul claimed earlier this week that Askren would be forced to forfeit his entire purse if he broke the rules by attempting to use his mixed martial arts skills.
"I don’t think the fight will last long enough for him to even think about taking me down," he said.
"We just signed the bout agreement days ago. He will lose his purse if he does that. … If he does do something like that, his purse is eliminated in the bout agreement.
"If he wants to lose all the money for the fight, then sure, go ahead. I am beating him up in wrestling shoes. He’s going to get beat up in wrestling shoes, which I think is hilarious."
However, shortly after those Jake comments Askren responded on Twitter by simply posting: "This is false."
