Self-defence is a recognized legal defence under section 34 of the Criminal Code. The law lets you use force to protect yourself or others, but only if you reasonably believed force or a threat of force was being used against you or someone else, you acted to defend against that threat, and your response was reasonable in the circumstances.
There is no absolute prohibition on using a weapon in self-defence, but the bar is very high. Canadian law does not allow weapons to be carried for self-defence, and using a firearm or other weapon will face intense scrutiny. If the force is found to be disproportionate, you can be charged with assault with a weapon under s. 267, which carries up to 10 years by indictment. If you have been charged after defending yourself, speak to a criminal defence lawyer immediately — free, confidential, 24/7, at 416-807-4477.
Key Takeaways
- Self-defence is a legal defence under s.34 of the Criminal Code — not a guaranteed right to use any level of force.
- The three-part test under s.34 requires a reasonable belief of a threat, a defensive purpose, and a response that is reasonable in the circumstances.
- Courts assess reasonableness using the non-exhaustive factors in s.34(2), including the nature and imminence of the threat, available alternatives, and whether weapons were involved.
- You cannot carry a weapon for self-defence in Canada. Pepper spray, tasers, and firearms cannot legally be possessed for that purpose.
- Using a weapon — even in genuine self-defence — is not automatically lawful. The force must be proportionate to the perceived threat.
- Assault with a weapon (s.267) is a hybrid offence: up to 18 months on summary conviction and up to 10 years by indictment (14 years for a repeat intimate-partner offence prosecuted by indictment). There is no mandatory minimum.
- A strong self-defence case turns on the specific facts, the accused’s state of mind, and how the evidence is presented under the s.34 framework.
What Is Self-Defence Under Canadian Law?
Self-defence in Canada is governed by section 34 of the Criminal Code; it is not a standalone right but a defence that, if accepted, means you cannot be convicted for force used to protect yourself or another person.
The 2012 reform under Bill C-26 (the Citizens’ Arrest and Self-Defence Act, in force March 2013) consolidated the previous multi-section framework into a single provision. Section 34 applies to any use of force — bare hands, an improvised object, or a weapon — and the central question is always whether the response was reasonable in the circumstances. Self-defence protects you and allows you to defend another person; section 35 provides a parallel defence for the protection of property.
What Is Assault With a Weapon?
Assault with a weapon under section 267 is a more serious form of assault than simple assault (s.265), covering an assault committed with a weapon, one that causes bodily harm, or one involving choking, suffocating, or strangling.
- s.267(a): carries, uses, or threatens to use a weapon or an imitation of one.
- s.267(b): causes bodily harm to the complainant.
- s.267(c): chokes, suffocates, or strangles the complainant.
The definition of “weapon” is broader than most people expect: not just a firearm or knife, but any object used or intended to cause harm, threaten harm, or intimidate — a hammer, a bottle, a bat, a screwdriver. Actual contact is not required; threatening someone with a weapon can be enough.
| Sub-section | Conduct covered | Example |
|---|---|---|
| s.267(a) | Carrying, using, or threatening to use a weapon or imitation weapon | Pointing a firearm, waving a knife, threatening with a bat |
| s.267(b) | Causing bodily harm during an assault | Striking someone and causing bruising, cuts, or broken bones |
| s.267(c) | Choking, suffocating, or strangling | Placing hands around someone’s throat during an altercation |
The Three-Part Test for Self-Defence Under Section 34
To raise self-defence, the evidence must support all three elements of s.34(1) — if any one fails, the defence fails.
| Element | What must be established |
|---|---|
| 1. Reasonable belief of force or threat (s.34(1)(a)) | The accused believed, on reasonable grounds, that force was used or threatened against them or another person. The belief need not be correct, but it must be reasonable. |
| 2. Defensive purpose (s.34(1)(b)) | The act was committed to defend or protect against that force or threat. A retaliatory or punitive motive is not self-defence. |
| 3. Reasonable response (s.34(1)(c)) | The act was reasonable in the circumstances — assessed with regard to the accused’s perception of events and whether that perception was reasonable. |
How Courts Assess Reasonableness: The s.34(2) Factors
Reasonableness is not judged in hindsight; s.34(2) requires courts to weigh a non-exhaustive list of factors together, with no single factor decisive.
- The nature of the force or threat — minor, serious, or potentially lethal.
- Whether the threat was imminent and whether other means of responding were available.
- The person’s role in provoking or escalating the incident.
- Whether any party used or threatened to use a weapon.
- The size, age, gender, and physical capabilities of the parties.
- The nature, duration, and history of any relationship between the parties, including prior threats or violence.
- Whether the act responded to force the person knew was lawful (for example, a lawful arrest).
Can You Use a Weapon in Self-Defence in Canada?
There is no absolute prohibition on using a weapon in self-defence, but you cannot lawfully carry a weapon for that purpose, and any use of a weapon is scrutinized closely for proportionality.
You cannot carry a weapon for self-defence purposes
| Item | Legal status for self-defence purposes |
|---|---|
| Firearms (handguns, rifles) | Cannot be carried for personal protection without a rare Authorization to Carry, almost never issued to civilians. The handgun freeze (Bill C-21, 2023) means most Canadians cannot purchase or transfer handguns at all. |
| Pepper spray/mace | Illegal to possess or use against a person for self-defence; a prohibited weapon. Bear spray is legal for wildlife deterrence, but using it on a person can result in charges. |
| Tasers/stun guns | Prohibited weapons; illegal to possess in Canada for any purpose, including self-defence. |
| Knives | Not inherently illegal to own, but carrying one to use as a self-defence weapon can be carrying a concealed weapon or possession of a weapon for a dangerous purpose, both offences. |
| Bats, tools, household objects | Legal to own, but using them on a person is scrutinized under s.34. Proportionality is everything; a bat in response to a shove will not satisfy the test. |
Using force with a weapon after an attack has begun
If you are attacked and use a nearby object — a chair, a kitchen item, an improvised tool — to defend yourself, that can be justified under s.34 if your response was proportionate to the threat; the law does not require you to be defenceless. Using lethal force, including a legally owned firearm, requires a reasonable belief that you faced a threat of death or grievous bodily harm and that there was no reasonable alternative — an extremely high standard. There is no blanket right to use a firearm against an intruder: every case is assessed individually on its facts, and even where a person is ultimately acquitted, they will typically face charges and a full proceeding first.
Penalties for Assault With a Weapon in Canada
Assault with a weapon (s.267) is a hybrid offence with no mandatory minimum — the Crown elects summary or indictable based on the severity of the allegations, the accused’s record, and the harm caused.
| Procedure | Maximum sentence | Notes |
|---|---|---|
| Summary conviction | 18 months; fine up to $5,000, or both | Less serious cases — minor injury, improvised weapon, first offence |
| By indictment | 10 years | More serious cases — firearms, significant injury, repeat offender |
| Indictment (repeat intimate-partner) | 14 years | Where the accused has a prior IPV conviction and the Crown proceeds by indictment (Bill C-75) |
Because there is no mandatory minimum, sentencing is fact-specific: a first-time offender who threatened someone with a household object without causing injury may, in rare circumstances, receive a discharge, while someone who strikes another person with a weapon and causes serious injury can face years in custody.
Additional consequences of a conviction
- A permanent criminal record affecting employment, professional licensing, and travel.
- A mandatory or discretionary weapons prohibition order.
- A DNA databank order (more likely on indictable proceedings).
- Probation of up to three years, where the sentence is a term of imprisonment of two years or less (or no custody).
- Immigration consequences for non-citizens: a 10-year-maximum offence can trigger inadmissibility.
- In a domestic context, possible firearms licence revocation under Bill C-21.
Defending an Assault With a Weapon Charge in Ontario
Even where the physical facts are not in dispute, strong legal arguments are often available — self-defence under s.34 is the most important, but others apply.
“Self-defence cases turn on how the accused perceived the situation — and whether that perception was reasonable. Courts assess incidents that unfolded in seconds, often under intense fear and stress. My approach is to present the full human context of what happened, not just the physical act.”
| Defence | How it applies |
|---|---|
| Self-defence (s.34) | The core defence: reasonable belief of a threat, defensive purpose, and reasonable response. Credibility and context build the picture of why the accused acted. |
| Defence of another (s.34) | The same three-part test applies where you intervened to protect a third party. |
| Defence of property (s.35) | A separate defence for protecting your home, vehicle, or property; force must still be proportionate, and s.35 does not justify deadly force to protect property alone. |
| Lack of intent | The Crown must prove the accused intentionally applied or threatened force; accidents or involuntary movements may defeat the mental element. |
| Identity / mistaken identification | Where the evidence identifying the accused is weak, this can be a complete defence. |
| Charter violations | Evidence from an unlawful search or arrest, or a breach of the right to counsel (s.10(b)), may be excluded under s.24(2). |
Why Early Legal Advice Matters
The instinct to “explain yourself” to police is the single biggest mistake in a self-defence situation — exercise your right to counsel first.
Statements to police, however well-intentioned, can be used to establish intent, to acknowledge the use of force, or to undermine the reasonableness of your belief. Under s.10(b) of the Charter, you have the right to retain and instruct counsel before answering questions. A self-defence case is not won by saying “I was attacked”: witness accounts, video, injury evidence, and the history between the parties must be gathered, preserved, and presented to support all three elements of s.34. Early legal intervention can also influence whether charges are laid at all and whether the Crown elects to proceed summarily or by indictment — a difference of up to 10 years in exposure.
Speak With an Assault With a Weapon Defence Lawyer in Toronto
If you have been charged with assault with a weapon after defending yourself or someone else, the outcome depends heavily on how the case is built from the start. Vilkhov Law represents clients facing the full range of assault and weapons charges across Toronto, Scarborough, Brampton, Newmarket, and the GTA. Contact us for a free, confidential consultation, available 24/7, at 416-807-4477.
Frequently Asked Questions
Is self-defence legal in Canada?
Yes. Section 34 of the Criminal Code provides a defence for using force to protect yourself or another person. The force must be based on a reasonable belief of a threat, used for a defensive purpose, and reasonable in the circumstances. It is assessed on the specific facts of each case.
Can you shoot someone in self-defence in Canada?
Using a firearm in self-defence is not automatically lawful. It is possible only if you reasonably believed you faced a threat of death or grievous bodily harm and had no reasonable alternative. The standard is high, and you will typically still face charges. You also cannot lawfully carry a firearm for self-defence without an extremely rare Authorization to Carry.
Can you shoot a home intruder in Canada?
There is no automatic right to shoot someone who enters your home. Whether it is lawful depends on whether you reasonably believed the intruder posed a threat of death or grievous bodily harm, whether other options existed, and whether your response was proportionate. Every case is assessed individually under s.34.
Are tasers or pepper spray legal for self-defence in Canada?
No. Tasers and stun guns are prohibited weapons and illegal to possess for any purpose. Pepper spray and mace are illegal to carry for self-defence. Bear spray is legal for wildlife deterrence, but using it against a person is treated as assault.
Can you go to jail for acting in self-defence?
Yes. You can be charged and convicted even if you believed you were acting in self-defence, if the force is found to be disproportionate or your belief in the threat is found unreasonable. The maximum for assault with a weapon is 10 years by indictment.
What is the maximum penalty for assault with a weapon in Canada?
Assault with a weapon (s.267) is hybrid: up to 18 months on summary conviction and up to 10 years by indictment. Where the offence involves intimate partner violence, and the accused has a prior IPV conviction, the maximum by indictment is 14 years. There is no mandatory minimum.
What factors do courts consider in self-defence cases?
Under s.34(2): the nature and severity of the threat; its imminence; whether alternatives were available; the accused’s role in provoking or escalating; whether weapons were involved; the physical characteristics of the parties; any history between them; and whether the force responded to conduct the accused knew was lawful.
Can you defend someone else using self-defence in Canada?
Yes. Section 34 applies equally to force used to protect another person. The same three-part test applies: a reasonable belief that force was threatened against the other person, a protective purpose, and a reasonable response.
