Objective Stepped and collaborative care with outpatient psychotherapy as one treatment step is guideline-recommended for mental health care. To date, the experiences and evaluation of psychotherapists regarding collaboration and stepped care have been neglected. In order to improve collaborative mental health care, this qualitative study aimed at identifying psychotherapists' perspectives and needs within collaboration and stepped care. Methods Semi-structured qualitative interviews with 20 German outpatient psychotherapists were conducted and analyzed applying thematic analysis. The analysis was realized in a recursive process to first identify themes and then relate these themes back to the research questions with regard to collaboration and stepped care. Results Collaboration mainly took place in small networks, with general practitioners and psychiatrists as the most important partners and psychotherapists wishing to intensify collaboration. Main barriers for collaboration were seen in deficient resources and remuneration and in a perceived lack of esteem by other medical specialties. Stepped care was appreciated for intensified collaboration and low-threshold access to care. Doubts were cast on its implementation within current health care conditions, worries concerned a primacy of economic principles instead of patient-orientation. Among further needs, psychotherapists demanded increased knowledge about psychotherapy, especially among general practitioners. Conclusion Psychotherapists expressed ambivalent attitudes towards stepped and collaborative care, substantially influenced by health care conditions and the perceived own standing among