Skip to navigationSkip to main contentSkip to right columnADVERTISEMENTThomas KentSat, July 4, 2026 at 1:35 PM GMT+2 7 min readCandice Ward/ Getty ImagesMoneywise and Yahoo Finance LLC may earn commission or revenue through links in the content below.1996 Olympic bronze medalist Floyd "Money" Mayweather Jr. built one of the most lucrative careers in sports history, reportedly earning more than $1 billion (1) over the course of his boxing career. Now, the retired champion is facing questions about his taxes.According to a recent filing first reported by Business Insider (2), the IRS has placed a $7.3 million federal tax lien against Mayweather for unpaid taxes tied to the 2018 and 2023 tax years.Top PicksDave Ramsey warns nearly 50% of Americans are making 1 big Social Security mistake —