Using the setting of when Australian firms were adopting the International Financial Reporting Standards (IFRS), we examine 266 publicly listed Australian firms and find evidence of a negative association between the length of tenure between the lead audit partner and client firm management (person-to-person relations) and audit quality. Conversely we find a positive relation between audit firm engagement by the client (firm-to-firm) and audit quality. This suggests there may be quality benefits from prescribing audit partner rotation, and quality costs from prescribing audit firm rotation