This article explores the prevalence of cumulative harm as a subtle and pervasive harm type, often dismissed or ignored in child protection assessment and reporting practices. The author examines a range of trends and research that identifies current gaps in the legislative response to cumulative harm identification and intervention. Through analysis of the current practices informing child protection in Australia, it is clear that there is movement towards a more holistic understanding of harm and the impacts of long-term maltreatment. However, a nationwide level of consistent practice has not yet been achieved, which places cumulative harm and reoccurring maltreatment on an equal footing with episodic maltreatment, particularly in relation to notification and reporting. Internationally, although variations are evident, just as they are in national framework, there is an inclusive impetus towards early intervention as a means of addressing harm prior to the onset of cumulative impact. There is a growing emphasis on children's wellbeing, development and universal right to quality of life and fair treatment.