Feedback-informed treatment (FIT) is a transtheoretical approach for evaluating and improving the quality and effectiveness of behavioral health services. It involves routinely and formally soliciting feedback from consumers regarding the therapeutic relationship and clinical progress and using the information to organize and tailor service delivery. FIT meets the criteria for evidence-based practice set forth by the Institute of Medicine, U.S. Department of Health and Human Services, and the American Psychological Association. It does so by integrating the best available research about what works in treatment, tracking consumer change, and identifying when adjustments need to be made to maximize therapeutic effect.