Can You Carry a Knife in Australia? Lawful Excuse and Penalties

Carrying a knife in Australia is illegal in any public place unless you have a lawful excuse, and self-defense does not count anywhere in the country. Every state and territory runs its own weapons legislation, so the exact penalties and prohibited knife lists shift depending on where you are, but the core rule is the same: no reason, no knife. Getting it wrong can mean anything from confiscation and a fine to years in prison.

What Counts as a Lawful Excuse

There is no fixed list, but a handful of categories are recognised across every Australian jurisdiction. Tasmania’s Police Offences Act sets them out clearly, and other states follow the same framework.¹

Work. A chef taking knives to a restaurant, a tradesperson with a utility knife on the way to a job, a warehouse worker using a box cutter on shift.
Sport and recreation. A fishing knife heading to the river, a camping knife for a bushwalk, a diving knife for a dive trip.
Food preparation. Bringing a knife to a picnic or barbecue to prepare or serve food.
Religious observance. Initiated Sikhs carrying a kirpan. Court decisions and legislative exemptions in New South Wales, Victoria, South Australia, Tasmania, and the ACT now specifically allow this.²
Collection, display, or exhibition. Transporting a historical sword or knife to a legitimate display, a reenactment event, or an approved exhibition.
Lawful purpose. You just bought kitchen knives from a shop and are taking them home. The receipt and the packaging support the excuse.¹

One excuse is universally rejected. Telling police you carry a knife to protect yourself does not just fail; it works against you, because the statement can be used as evidence you intended to use the knife as a weapon.¹ The Northern Territory statute makes this explicit, listing self-defense as something that does not qualify as a lawful excuse.³

You Have to Prove the Excuse

This is the part most people miss. If police find a knife on you, the burden is on you to demonstrate a lawful excuse, not on the prosecution to disprove one. The Northern Territory Act states it plainly: a person must not possess a controlled weapon “without lawful excuse, proof of which is on the person.”³ The wording differs between jurisdictions; the practical effect is the same.

So the evidence around you matters. A work knife is easier to explain when you have a uniform, a work ID, a letter from your employer, or a jobsite you’re clearly heading to. A fishing knife makes sense next to tackle in the boot of your car. The same knife clipped to your belt at a shopping centre on a Friday night is much harder to justify. Time of day, location, how the knife is stored, and whether your stated reason fits the circumstances all shape how police and a court read the situation.

Pocket Knives and Multitools Are Not Exempt

Small folding knives, Swiss Army knives, and Leatherman-style multitools do not get a free pass. Tasmania Police specifically lists pocketknives and multitools alongside kitchen knives and box cutters as items that require a lawful excuse in public.¹ Western Australia’s weapons law defines “edged weapon” broadly to include any knife, with the only exceptions being plastic or wooden eating utensils and knives with a rounded tip and dull edge.⁴

If your multitool has a blade, the lawful excuse rule applies to it. Keeping one in the glovebox “just in case” is not an excuse. Carrying one because you are heading to a campsite or a specific task that needs it is. The line sits at a specific, articulable reason tied to that moment, not a general sense that the tool might come in handy.

Knives You Cannot Carry at All

Some knives are classified as prohibited weapons, and no lawful excuse changes that. Possession is a standalone offence, and the penalties are heavier than for a standard knife. Types prohibited across most or all Australian jurisdictions include:⁵

Flick knives (switchblades), where the blade opens automatically by spring, button, gravity, or centrifugal force.
Butterfly knives (balisongs), with a two-piece handle that folds together over the blade.
Daggers: sharp-pointed stabbing instruments with a flat blade and cutting edges on both sides, capable of being concealed on the person.
Push knives, with a transverse handle so the blade is supported by the palm.
Concealed or disguised knives hidden inside everyday objects such as credit cards, pens, belt buckles, walking canes, or lipstick cases.⁶
Non-metallic or ceramic knives designed to evade metal detectors (plastic cutlery excluded).
Ballistic knives, which discharge a blade as a projectile.
Throwing knives and star knives.

Some states go further. South Australia has classified machetes and swords as prohibited weapons, with a maximum penalty of $20,000 or two years’ imprisonment for possession.⁷ Victoria has also banned machetes and treats swords as prohibited weapons requiring special approval from the Chief Commissioner of Police, though collectors and reenactors can obtain exemptions through membership in approved organisations, subject to statutory declarations and other conditions.⁵ A knife that is legal to own in one state may be a prohibited weapon across a border, so check before you travel with one.

Penalties by State and Territory

Because weapons law is state legislation, penalties vary a lot. Several jurisdictions have increased them recently, so older figures may no longer be accurate.

South Australia: a $2,500 fine or six months’ imprisonment for a first offence; $5,000 or twelve months for a subsequent offence.⁷
Victoria: a maximum of 120 penalty units or one year’s imprisonment for possessing a controlled weapon without lawful excuse.⁸
Queensland: a maximum of 40 penalty units or one year’s imprisonment.⁹
Western Australia: up to three years’ jail and a $36,000 fine.¹⁰
Northern Territory: a maximum of 200 penalty units or twelve months’ imprisonment, doubled if the offence occurs at night.³
New South Wales: penalties were doubled in 2024; the original maximum was four years’ imprisonment and a fine of 40 penalty units ($4,400).¹¹

Aggravating factors push those numbers higher across the board. Carrying a knife near a school, on licensed premises, or in a declared safe night precinct attracts enhanced penalties. Using a knife to threaten someone changes the charge entirely: in Victoria, threats to kill carry a maximum of ten years’ imprisonment, compared with one year for simple possession.¹² A conviction also creates a criminal record, which can affect future employment, licensing, and international travel.

Police Can Scan You Without Suspicion

Police can already stop and search you for weapons if they have reasonable suspicion. Two states have gone further with “wanding” laws that allow officers to scan people with handheld metal detectors in designated areas, without a warrant and without suspicion about a specific person.

Queensland introduced these powers through Jack’s Law, since made permanent and expanded so that officers can wand for weapons in any public place where knife crime may be a risk, not only safe night precincts and transport hubs as originally trialled.¹³ NSW passed its own wanding legislation in late 2024, in force from December that year, letting officers stop and scan people in designated areas.¹¹ If the wand detects metal, police can require you to produce the item. This is not a full body search, but if you are carrying a knife and cannot explain it on the spot, the knife will be seized and charges are likely.

Importing Is a Separate Problem

State knife laws do not cover bringing knives into the country. Under the Customs (Prohibited Imports) Regulations 1956, importing a wide range of knives and edged weapons is prohibited without prior written permission from the Australian Border Force. The restricted list in Schedule 13 covers daggers, flick knives, butterfly knives, push knives, ballistic knives, throwing knives, concealed blades, non-metallic knives, and karambits, among others.¹⁴ Goods imported without a valid permit may be seized and destroyed, and the importer prosecuted.¹⁵ If you are ordering a restricted edged weapon from overseas, the permit needs to be in place before the item ships.

How to Stay on the Right Side of the Law

The practical version of all this is short. Do not leave the house with a knife unless you have a specific reason, and make that reason obvious to anyone who looks. Transport knives in a sheath, a toolkit, or a bag, not loose in a pocket or clipped to your belt. Keep them in the boot of the car, not the door pocket or the centre console. If you are heading to work, carry something that links the knife to the job. If you are going camping, let the surrounding gear tell the story.

Know which state or territory you are in, especially if you cross borders for work or recreation, because a legal knife in one place can be a prohibited weapon in the next. And if police ask about a knife on you, the answer never involves the words “protection” or “self-defense.” A calm, specific explanation tied to a legitimate activity is the only thing that helps.

1
Tasmania Police. Knives and Dangerous Articles in Public Places
2
SBS. Court Overturns State Ban on Sikhs Carrying Ceremonial Knives in Public
3
Northern Territory Government. Weapons Control Act
4
Government of Western Australia. WA Knife and Edged Weapon Laws
5
Victoria Police. List of Prohibited Weapons
6
ACT Policing. Prohibited Weapons – Concealed/Disguised Weapons and Blades
7
Attorney-General’s Department. Knife Crime Laws
8
AustLII. Control of Weapons Act 1990 – Sect 6
9
Queensland Government. Weapons Act 1990
10
Government of Western Australia. Major Milestone as Tough Knife Laws Deliver a Safer WA Community
11
NSW Government. NSW Introduces Laws to Get Knives Off the Street and Boost Community Safety
12
Sentencing Council. Maximum Penalties
13
Queensland Government. Expanded Jacks Law Now in Effect
14
AustLII. Customs (Prohibited Imports) Regulations 1956 – Schedule 13
15
Australian Border Force. Weapons – Prohibited Goods