The impulse buying tendency is a tendency to buy something unplanned, quickly and without thinking (Rook, 1987) and it is consisted of a cognitive aspect (the lack of planning and thinking about the consequences of behavior) and an affective aspect (emotional response associated with shopping) (Verplaken and Herabadi, 2001). The aim of this study was to examine the relationship between the dimensions and facets of the HEXACO personality model and the impulsive buying tendency, that is, the cognitive and emotional component of impulsive buying. Data were collected on 589 employees using the HEXACO-PI-R-100 and the Impulse Buying Tendency Scale. The results show that honesty-humility, emotionality, and conscientiousness are significant predictors of impulsive buying tendency, with conscientiousness being related to the cognitive aspect, and honesty-humility and emotionality being related to the emotional aspect of impulsive buying. Extraversion has not proven to be a significant predictor of impulsive buying tendency on bivariate level but was significat as a part of a hierarchical model. At the facet level, all four facets were significant for honesty-humility, with the facet greed avoidance having the highest correlation with the emotional component of impulsive buying. For the emotionality, all four facets were equally significant, while for the conscientiousness only the facets of organization and prudence were significant. For extraversion, facet social self-esteem is correlated with affective component, and sociability with both components.