Knife offences in NSW – the difference between carrying, using, and supplying a blade, and why your reason for having it matters more than you think
Knife offences in NSW produce a consistent stream of prosecutions that begin with situations that people did not think of as criminal. A kitchen knife in a backpack on the way to a friend’s place. A hunting knife in the glovebox of a ute. A pocket knife in a jacket. A folding blade in a camping bag on public transport. NSW law does not begin from the question of what you intended to do with the blade. It begins from where you were carrying it and then asks whether you had a recognised lawful excuse. If you cannot identify a genuine, specific lawful purpose, you face a criminal charge regardless of any absence of harmful intent.
NSW Police conduct regular public place knife operations. Operation Soteria and similar public order operations have produced knife-related charges across suburban and regional NSW throughout 2025 and 2026. Recent NSW Police news has featured weapons seizures – including Tasers, flick knives, and prohibited blades – in connection with drug and weapons operations across the state. Understanding exactly what the law prohibits, what it permits, and what you need to say and do if police question you about a knife is worth knowing.
The core knife offence – section 11C of the Summary Offences Act
The primary NSW knife offence is found at s 11C of the Summary Offences Act 1988 (NSW). A person must not, without reasonable excuse, carry a knife in a public place or a school. “Knife” is defined broadly to include any blade, whether or not designed as a weapon, including a Swiss army knife, hunting knife, penknife, and any other blade. The definition captures almost any bladed instrument that could reasonably be described as a knife, regardless of its ordinary purpose.
The maximum penalty for a first offence is 4 penalty units (currently $440) or 12 months’ imprisonment, or both. For a second or subsequent offence the maximum is 20 penalty units or 2 years’ imprisonment. Courts regularly impose fines and community corrections orders for first-offence knife charges where no violence is involved, but the offence is more serious than many people initially appreciate, and a criminal record for a weapons offence can have significant consequences for employment, professional licensing, and travel.
What “public place” means
The offence applies in any public place or school. The Summary Offences Act defines a public place broadly to include any place that members of the public are entitled to use, whether or not on payment of a charge. This includes roads, parks, shopping centres, restaurants, hotels, pubs, nightclubs, public transport (including train carriages and buses), ferry terminals, airport common areas, and any common areas of residential buildings. A vehicle on a public road is a public place for the purposes of the offence. The only clear exclusion is private premises to which the public does not have access.
Reasonable excuse – what actually counts
The offence is committed “without reasonable excuse.” The Act provides examples of reasonable excuses including: carrying the knife as a genuine bushwalker or camper for use in the outdoor activity, for use in a lawful occupation (a chef carrying a kitchen knife to or from work, a tradesperson carrying a work blade, a farmer or agricultural worker), for a genuine lawful recreational purpose such as fishing, for a religious purpose (certain religious traditions require the carrying of a ceremonial knife), or for display at a legitimate collector event.
These are examples, not an exhaustive list, but they illustrate the standard: the excuse must be genuine, specific, and identifiable. General self-protection is not a reasonable excuse in NSW. “I just always carry it” is not a reasonable excuse. “I forgot it was in my bag” does not provide an excuse, although it may be relevant to intent in some circumstances. The Judicial Commission of NSW has confirmed that the reasonable excuse must be established by evidence, not merely asserted, and that it must be genuinely connected to the specific purpose rather than pretextual.
Prohibited weapons – a far more serious category
Some blades fall outside the knife offence entirely and into the prohibited weapons framework under the Weapons Prohibition Act 1998 (NSW). Prohibited weapons include: flick knives (any knife where the blade opens automatically by gravity or centrifugal force, or by any pressure on a button or spring), gravity knives, butterfly knives (balisong), daggers (knives with a pointed blade and two sharpened edges), stilettoes, star knives, and throwing knives. Possession of a prohibited weapon without a permit is a criminal offence carrying a maximum of 14 years’ imprisonment – dramatically more serious than a standard knife offence.
The distinction between a regulated knife and a prohibited weapon depends on the physical characteristics of the blade: its opening mechanism, its edge configuration, and its design. People are often surprised to learn that what they thought was an ordinary folding knife is in fact a prohibited weapon because of how the blade deploys. Legal advice before purchasing exotic or imported knife designs, and before carrying any blade that might have unusual characteristics, is worthwhile.
Using a knife in an assault
Carrying a knife in a public place is a modest charge compared to what follows when a knife is used in a violent incident. Where a knife is used to threaten or harm someone, the offender faces charges including: assault with a weapon, which is a specific offence carrying higher penalties than common assault; wounding under s 35 of the Crimes Act, carrying up to 7 years; grievous bodily harm under s 33, carrying up to 10 years; or robbery in company while armed, carrying up to 25 years. The presence of a knife transforms the sentencing range completely. A fight that might have resulted in a common assault charge becomes an aggravated weapons offence as soon as a knife is produced, even if it is never used to cut anyone.
What to do if police stop and question you about a knife
NSW Police have extensive powers under the Law Enforcement (Powers and Responsibilities) Act 2002 (NSW) to conduct pat-down searches in public places where they reasonably suspect a person is carrying a knife or dangerous implement. If police find a knife and ask why you have it, you have the right to decline to answer. If you do have a genuine lawful purpose, stating it clearly and consistently with the surrounding context – the clothing you are wearing, what you were doing, any work or recreational equipment you are carrying – is important. A genuine, plausible explanation given at the time is much more useful than an explanation developed after the fact.
Contact Us
At National Criminal Lawyers, we advise on knife and weapons charges across all categories – from summary knife offences through to prohibited weapons and assault charges involving blades. The reasonable excuse defence, the lawfulness of the search that discovered the knife, and the characterisation of the blade as regulated or prohibited are all matters worth examining carefully.
Call us at 1800 CRIM LAW for a free consultation. Help us help you understand your situation and get you the best outcome possible.
