Nominal vs present value
Local display: $108.8m · Rebased to 2024 USD via US CPI-U
How the total breaks down
Mayweather fight purse & backend. Guaranteed and reported upside from the August 2017 boxing match in Las Vegas.
UFC & endorsements. Remaining UFC-related income and brand deals counted in the same Forbes year.
Impact 99
- Set the single-year MMA income ceiling that every later negotiation cites
- Proved a UFC star could headline a boxing megafight on boxing's terms
- Made PPV points and crossover rights the center of fighter free agency
McGregor's 2017 year is the reference point for modern combat-sports economics: the UFC's biggest star left the Octagon for one night and still out-earned most team-sport athletes. Every subsequent champion contract fight has been argued in the shadow of that number.
Conor McGregor's 2017 Forbes total — driven by the Mayweather fight — remains the clearest proof that MMA fame can be converted into boxing-scale money. Restated in 2024 dollars it still sits far above every other fighter on this list. The year did not just enrich McGregor; it permanently raised fighters' expectations of what a global combat brand is worth.