Although the psychotherapist's personal psychotherapy has received considerable research attention in recent years, little systematic investigation of the ethical issues involved has been published. This article provides a rigorous interrogation of mandatory personal psychotherapy as a training requirement for mental health professionals, a topic that remains ethically contentious. The article begins with a discussion of why MPP is an explicitly ethical issue, before debating the ethics of MPP under six questions, each worded to capture a salient ethical issue relevant to (...) the appropriateness of making personal treatment a mandatory training requirement. Using principle, virtue, and care ethics perspectives, the arguments for and against MPP are critically investigated. The article concludes with an ethical position statement. (shrink)