NBA referees earn a competitive salary, which varies based on their experience and the level of the games they officiate. Typically, entry-level referees can expect to make around $150,000 per year, while those with more experience and seniority can earn upwards of $500,000 annually. Additionally, referees may receive bonuses for officiating playoff games or the NBA Finals, further increasing their overall earnings. In summary, the earnings of NBA referees are substantial and depend on their experience and the significance of the games they oversee. Entry-level officials generally start with a salary of approximately $150,000, while seasoned referees can make over $500,000. Furthermore, officiating high-stakes playoff games or the Finals can lead to additional financial rewards.