A study was undertaken to determine if individualised, formal spiritual assessment could impact on and optimise patient care within a Palliative Care Unit (PCU). The authors write on the benefits of formal spiritual assessment as undertaken by chaplaincy services. The Spiritual Assessment Tool (SAT) selected, introduced and evaluated for the PCU was the HOPE tool. The authors share the results of research into the effect and benefits that formal spiritual assessment had on members of the PCU's interdisciplinary team. The results highlight a positive impact, of the SAT, upon the various team members. The article explores and expresses the staff's enhanced understanding of the nature and extent of spiritual and religious needs and resources.