Formal assessments of cognition that rely on language may conceal the non-linguistic cognitive function of people with aphasia. This may have detrimental consequences for how people with aphasia are supported to reveal communicative and decision-making competence. This case report demonstrates a multidisciplinary team approach to supporting the health and social care decision-making of people with aphasia. The case is a 67-year-old woman with Wernicke's type aphasia. As the issue of long-term care arose, the speech and language therapist used a supported communication approach with the patient who expressed her wish to go home. A multidisciplinary team functional assessment of capacity was undertaken which involved functional assessments and observations of everyday tasks by allied health, nursing, catering and medical staff. In this way, the patient's decision-making capacity was revealed and she was discharged home. A collaborative multidisciplinary team approach using supported communication and functional capacity assessments may be essential for scaffolding the decision-making capacity of people with aphasia.