This study examined how nudges—such as framing, social norms, and default settings—affect charitable giving, and how personality traits, measured using the Big Five Personality Test, influence donation decisions. The aim was to identify effective nudges, test whether default settings increase donations by reducing decision-making effort, and explore the relationship between personality traits and responses to nudges. In a laboratory experiment, three nudges were tested: default settings, social norms, and framing. The results indicate that all tested nudges—default settings, social norms, and framing—positively influence charitable donations. Individuals with higher scores on the openness dimension of the Big Five personality traits donate larger amounts, suggesting that more open individuals are more receptive to nudging interventions. These findings provide evidence that nudging interventions can effectively promote charitable giving without undermining intrinsic motivation, offering valuable insights for non-profit organizations in designing donation strategies.