This paper discusses consensus between patient and therapist as a measure of the quality of the psychotherapeutic relationship. Consensus is defined by two interpersonal concepts, agreement and understanding, and two intrapersonal concepts, congruency and experienced consensus. 162 patients and their therapists in a Dutch Center for Comprehensive Mental Health Care were rated on the degree of consensus. Two patient self-report outcome measures and one reported by the therapist were related to consensus. The three consensus measures that predicted outcome after 6 months were understanding by the therapist as well as agreement and experienced consensus by the patient. This result suggests that a complementary patient-therapist relationship favors a good psychotherapy result. The instruments in this paper provide a means to measure consensus during the process of psychotherapy. This is a feasible way to both monitor progress and improve the chances of a successful outcome.