Understanding what facilitates change in men who perpetrate domestic violence can aid the development of more effective batterer intervention programs (BIPs). To identify and describe key change processes, in-depth interviews were conducted with nine successful BIP completers and with 10 intervention group facilitators. The accounts described a range of individual-level processes of change consistent with prior research but also included several processes spanning the community, organizational, and group levels of analysis. Program completers and facilitators gave mostly similar accounts, though differed in their emphasis of criminal justice system sanctions, group resocialization of masculinity, and the participants' own decision to change. All accounts especially emphasized group-level processes and the importance of balancing support and confrontation from facilitators and group members. The findings demonstrate the importance of obtaining multiple perspectives on change processes, and support ecological and systems models of batterer intervention.