The National Homicide Monitoring Program (NHMP) is Australia’s only national data collection on homicide incidents, victims and offenders. The NHMP has collated data since 1989–90.

Homicide classification is based on the closest relationship between the victim and primary offender. For example, if an offender kills their intimate partner and a friend, the homicide is classified as a domestic homicide as the closest relationship is that between the offender and their intimate partner.

Rates are calculated using population data (ABS 2021) and Aboriginal and Torres Strait Islander population estimates from the Australian Bureau of Statistics (ABS 2022). Rates are calculated using the total population except where stated otherwise. The denominator used for intimate partner homicide rates is the population aged 18 years and over. Offender rates are calculated using the population aged 10 years and over, to reflect the legal age of criminal responsibility.

This report describes homicide incidents recorded by all state and territory police between 1 July 2020 and 30 June 2021.