Goal planning is an important element in brief health interventions provided in primary healthcare settings, with specific, measurable, achievable, realistic/relevant, and timed (SMART) goals recommended as best practice. This study examined the use of SMART goals by Australian community pharmacists providing a brief goal-oriented wellbeing intervention with service-users experiencing severe and persistent mental illnesses (SPMIs), in particular, which aspects of SMART goal planning were incorporated into the documented goals. Goal data from the PharMIbridge Randomized Controlled Trial (RCT) were used to investigate how community pharmacists operationalized SMART goals, goal quality, and which SMART goal planning format aspects were most utilized. Goals were evaluated using the SMART Goal Evaluation Method (SMART-GEM) tool to determine how closely each documented goal met the SMART criteria. Goals were also categorized into five domains describing their content or purpose. Descriptive analysis was used to describe the SMART-GEM evaluation results, and the Kruskal-Wallis H test was used to compare the evaluation results across the goal domains. All goals (n = 512) co-designed with service-users (n = 156) were classified as poor quality when assessed against the SMART guidelines for goal statements, although most goals contained information regarding a specific behaviour and/or action (71.3% and 86.3%, respectively). Less than 25% of goals identified how goal achievement would be measured, with those related to lifestyle and wellbeing behaviours most likely to include measurement information. Additionally, the majority (93.5%) of goals lacked details regarding monitoring goal progress. Study findings raise questions regarding the applicability of the SMART goal format in brief health interventions provided in primary healthcare settings, particularly for service-users experiencing SPMIs. Further research is recommended to identify which elements of SMART goals are most relevant for brief interventions. Additionally, further investigation is needed regarding the impact of SMART goal training or support tools on goal quality.