CBS microphones picked up the exchange during its live broadcast of the match.
Tournament spokesman Chris Widmaier says Federer is being docked the same amount as two other players - Vera Zvonareva and Daniel Koellerer - for audible obscenity.
Widmaier says a total of $31,500 in fines is being collected by the tournament, topped by Serena Williams' $10,000 for unsportsmanlike conduct. She also was fined $500 for racket abuse.
Daniel Nestor was docked $5,000 for unsportsmanlike conduct toward a fan.
Eboue proud of Barca linkAngry Federer cusses out umpire during final