The Dutch version of the Self-Sufficiency Matrix (SSM) has been developed to map people’s functioning in all the essential domains of life and expresses this as a score for that person’s level of self-sufficiency at that moment. The SSM is highly consistent with the work process and culture of care systems for clients with multiple issues in which an integrated approach, collaboration among various disciplines and short lines of communication between health and welfare professionals is essential. This is because the instrument contributes to the ability of health and welfare professionals from different backgrounds to speak the same language and helps to structure the information these professionals have about their clients. The SSM can contribute to improving case management, tracking and adjusting treatment programmes and monitoring developments of the group in care.