Abstract Aim Anxiety disorders and symptoms are common in people with psychotic disorders, having a negative impact on clinical status, function level and overall prognosis. However, research on the significance of anxiety in predicting remission and long‐term functioning in first‐episode psychosis (FEP) is still scarce. This study investigated the effects of anxiety and obsessive‐compulsive symptoms (OCS) on clinical and functional improvement in individuals with FEP.