NCAA Basketball
"The team at Sportscasting posts that basketball officials get paid by the game, and the rates are higher for bigger conferences. These referees can earn up to ​$2,000 a game​, but for smaller conferences, they might earn around ​$50,000​ a year if they get to referee around ​50​ games. Keep in mind that they do not receive paid sick time or vacations because they are paid by the game.

When officiating up to men's Final Four teams games, the pay structure is tiered. This means that a referee might be paid ​$1,000 a game​ in the first rounds, ​$1,400 for regional finals​ and ​$2,000 for the Final Four​ games. Those who are able to impress the NBA may be able to switch to professional basketball, and the highest-paid referees can earn around ​$550,000​ a year."