NBA referees earn high salaries because they officiate professional basketball games at the highest level. Entry-level referees usually earn about $250,000 per year, while experienced referees can make $350,000 to $550,000 annually. They also earn around $3,000–$6,000 per game, with extra bonuses for playoff and NBA Finals games, making their total income even higher. https://sportsnscoop.com/nba-refree-salary/