Crime in New Zealand

Crime in New Zealand defined primarily by statute, rather than by common law. The main source is the Crimes Act 1961, which sets out a comprehensive code of criminal offences and their penalties. The Summary Offences Act 1981 covers less serious (summary) offences, such as disorderly behaviour, minor assaults, and public nuisance offences. The Misuse of Drugs Act 1975 addresses offences related to the possession, use, manufacture, and supply of controlled drugs. Other laws specify financial crimes, traffic offences, and other kinds of offences.

The laws defining crimes are updated frequently, often in response to stories about crimes which are highlighted in the media, especially those involving violence. Politicians and the public tend to rely on the media for information about the prevalence of crime, and multiple surveys indicate the majority of New Zealanders mistakenly believe that crime is increasing. During election cycles, politicians talk about crime as a 'law and order' issue to such an extent that it has been described as a political football - with parties of all persuasions unveiling competing policies and accusations about who is "soft" or "tough" on crime. Academics point out that calls to crack down on crime have become a recurring pattern in New Zealand, often overshadowing nuanced discussion and evidence-based policy.

In the process, the main factors contributing to criminal offending in New Zealand are largely ignored. They include poverty, adverse childhood experiences, poor school performance, association with delinquent peers, substance abuse and addictions, mental illness, low intelligence, impulsivity, and certain neurological or hormonal factors. Politicians in New Zealand often claim to put victims at the centre of their concerns, ignoring the reality that a substantial majority of those who grow up to commit crimes as adults were previously victimised as children.

Establishing trends in crime rates is complicated by a number of factors including the willingness of the public to report crimes and changes in the way offences are recorded by the Police. The most significant change occurred in 2015 when the police began reporting victimisations instead of offences which ended up in court. This makes any analysis of crime rates before 2015 incompatible with rates following the change.

Assessing the level of violent crime is equally difficult, complicated by significant differences between low level threats, minor assaults and serious violence. Criminologists believe the murder rate is the most reliable indicator of violence in society and this has been relatively stable in New Zealand for some years. Adding another point of view, in 2025, New Zealand was third highest on the Global Peace Index issued by the Institute for Economics and Peace – out of 149 countries. From an international perspective, New Zealand is perceived as a 'safe' country to live in.