There is no doubt that the super fight between undefeated boxing great Floyd Mayweather and UFC lightweight champion Conor McGregor will generate a ton of money.

Floyd Mayweather is expected to make upward of $100 million for his role in the boxing match while McGregor is expected to make a bit less than his undefeated opponent.

With another Mayweather fight that could possibly break his own record for the richest fight in history, “Money” is apparently facing issues for paying his taxes from 2015, where he and Manny Pacquiao set the record for the richest fight in history.

On Monday, ESPN revealed that Mayweather filed a Tax Court petition on July 5, which asks the IRS to give him a reprieve until his August 26 fight. The petition also asks for the IRS to reduce the penalty for Mayweather being late on paying his taxes.

“Although the taxpayer has substantial assets, those assets are restricted and primarily illiquid,” the petition said, according to the legal website Law360. “The taxpayer has a significant liquidity event scheduled in about 60 days from which he intends to pay the balance of the 2015 tax liability due and outstanding.”

The actual amount Mayweather owes the IRS is unknown. However, it does seem that the flashy undefeated boxer does not have the liquid cash to pay it all off, yet.

It is estimated that Mayweather made around $220 million for his fight against Manny Pacquiao that left many fans heavily disappointed due to a lack of action in the ring between the two superstars.

Mayweather could be making a similar amount in his fight with McGregor as conservative pay-per-view buy estimates are set below Mayweather vs. Pacquiao numbers but have all the potential in the world to go above and beyond what was set in 2015.

This article first appeared on BJPenn.com on 7/10/2017.