The soccer referee (SR) exposes themselves to stressful situations during the competition that may affect decision-making and may be more or less impulsive during the competition. The objectives of this study are to analyze the fluctuation of impulsivity of amateur AF between a basal context and a precompetitive one and, moreover, to compare the impulsivity of AF according to category, age and experience. Participants were 29 Spanish referees of 23.98 ± 2.66 years participated; 73.64 ± 7.15 kg; and 7.8 ± 2.6 seasons of experience on average. participated and data was collected from Impulsivity data were collected using the UPPS-P questionnaire in 57 matches of their corresponding categories and later, between 48 hours and 72 hours later, the questionnaire was carried out again as a basal intake. This study took place during the 2019-2020 season. The results indicated that the referees have higher levels of negative urgency, sensation seeking and total impulsivity in precompetitive states than in basal states (p <.05). Likewise, the SR with a higher category had lower levels of negative and positive urgency (p <.05). As a conclusion, amateur SR has greater impulsivity in pre-competition states and, furthermore, those with a higher category tend to have lower levels of impulsivity.