This systematic review aimed to explore social and occupational functioning levels in individuals with BPD and whether this varies according to symptomatic status, age, or gender. A multi-database search was conducted for articles, and of the 1164 records identified, 19 were included in this review. Of the 15 studies reporting on social functioning, 13 indicated significant levels of impairment, and of the 14 studies reporting on global functioning, all indicated significant impairment across both clinical and in-remission populations. Occupational functioning was primarily assessed as either a part of global functioning or by subscales within social functioning, highlighting a lack of use of dedicated measures for its assessment. This systematic review found that individuals with BPD experience a range of significant impairments in functioning persisting across the lifespan. Further studies are warranted to explore levels of functional impairment across all functional domains and factors associated with continual functional impairment in this population.