Numerous studies have demonstrated a link between personality disorders (PDs) and increased treatment utilization and decreased satisfaction. However, few studies have examined the link between general personality models, such as the Five-Factor Model (FFM), and these treatment variables. The current study examines the role of depression, anxiety, and functioning, PDs, and the FFM in accounting for psychiatric treatment utilization and satisfaction with care in two distinct clinical samples (n = 99 and 544, respectively). The results suggest that both maladaptive personality symptoms and general personality traits are predictive of these outcome variables. Importantly, the findings regarding treatment utilization replicate across samples and level of personality assessment (i.e., FFM and PDs). It is argued that both types of personality information should be included in the initial treatment planning and implementation stages.