Aggravated Assault Lawyer Toronto | Serious Assault Defence

Composed by Chris Sewrattan, Certified Specialist in Criminal Law. Updated July 2026.

This is legal information, not legal advice. It does not create a lawyer-client relationship. For advice about your situation, contact us for a consultation.

Aggravated assault is the most serious assault charge short of homicide. Under section 268 of the Criminal Code, an assault becomes aggravated when it wounds, maims, disfigures, or endangers the life of the complainant. These cases usually involve significant injuries, hospital records, and high stakes: the offence is straight indictable with a 14-year maximum, and a conviction carries a mandatory weapons prohibition. The defence work concentrates on self-defence, on what the accused could reasonably foresee, and on whether the injuries actually meet the aggravating definitions.

What is aggravated assault under Canadian law?

The Crown must prove beyond a reasonable doubt:

An assault: the intentional application of force without consent.
An aggravating consequence: the assault wounded (broke the skin), maimed (deprived the person of the use of a body part), disfigured (caused lasting injury to appearance), or endangered the complainant's life. Life endangerment does not require the complainant to have nearly died; it requires that the assault put their life at risk.
The fault element: the accused intentionally applied force, and a reasonable person would have foreseen that the assault exposed the complainant to a risk of bodily harm. The Crown does not have to prove the accused intended the wounding or the endangerment itself, only that bodily harm was objectively foreseeable.

Because the offence turns on consequences, charges often start as assault causing bodily harm and are upgraded when medical records arrive, or are laid as aggravated assault and later resolve to a lesser included offence such as assault when the injuries are put in context.

Penalties for aggravated assault in Ontario

Aggravated assault is a straight indictable offence with a maximum penalty of 14 years in prison. There is no mandatory minimum, and the sentencing range is wide: a genuinely defensive overreaction by a first offender is treated very differently from a group beating or a knife attack. That said, custody is the usual outcome where the Crown proves a true aggravated assault, and penitentiary sentences are common for serious wounding.

A conviction brings a mandatory weapons prohibition under section 109 of the Criminal Code and a DNA order, since aggravated assault is a primary designated offence. Immigration consequences for non-citizens are severe at this level of allegation. Bail is contested hard in these cases; our bail hearings page explains how release plans are built for serious violence allegations.

Possible defences to an aggravated assault charge

Depending on the evidence, defences may include:

Self-defence: section 34 permits reasonable defensive force. In aggravated assault cases the fight is usually over proportionality, and the law does not require a person under attack to measure their response with precision.
Foreseeability: whether a reasonable person in the accused's position would have foreseen a risk of bodily harm from the act, particularly in single-punch cases with catastrophic but unforeseeable consequences.
The aggravating element: whether the injuries legally amount to wounding, maiming, disfigurement, or endangerment of life, which is contested through medical evidence.
Causation: whether the assault, as opposed to a fall, an intervening event, or a pre-existing condition, caused the aggravated injury.
Identity: group altercations, video interpretation, and unreliable eyewitness identification.
Charter issues and delay, including statements taken in breach of the right to counsel and unreasonable delay under section 11(b).

Frequently asked questions

What makes an assault aggravated?

The consequences. An assault is aggravated when it wounds, maims, disfigures, or endangers life. Without one of those results, the charge is simple assault or assault causing bodily harm.

What is a wound in law?

Generally an injury that breaks the skin. Cuts requiring stitches and stab wounds are classic examples, and courts assess the medical evidence rather than labels in a police synopsis.

Did I have to intend the serious injury?

No. The Crown must prove you intended the assault and that bodily harm was objectively foreseeable. It does not have to prove you intended the wounding or endangerment that resulted.

What is the maximum sentence for aggravated assault?

Fourteen years in prison. There is no mandatory minimum, and actual sentences depend heavily on the circumstances, the injuries, and the offender's background.

Can self-defence apply if the other person was badly hurt?

Yes. Serious injury does not disqualify self-defence; the question is whether the force used was reasonable in the circumstances as the accused perceived them. Proportionality is assessed realistically, not with hindsight precision.

Can aggravated assault be reduced to a lesser charge?

In appropriate cases, yes. Assault and assault causing bodily harm are included offences, and cases resolve to them where the aggravating element or the foreseeability of harm cannot be proven.

Charged with aggravated assault? Contact us