Self-Defence as a Defence to Assault in Queensland
Assault — 2026-06-23 — by Sacha Sarah Smith, Civic Law
When does self-defence apply to an assault charge in Queensland? The legal test under ss 271–272 Criminal Code, the limits on force, and what the court considers.
You were involved in a fight. You were defending yourself — or at least, that is what you believe happened. Now you have been charged with <a href="/assault-charges-lawyer-cairns">assault</a>, and you want to know whether self-defence gets you out of it.
The short answer is: it can. Self-defence is a complete defence in Queensland. If it is made out, you are acquitted — not convicted with a reduced penalty, but acquitted outright. But the law does not accept every claim of self-defence at face value. It draws lines around what is proportionate, what is necessary, and who started it. Understanding those lines — and how they apply to your facts — is what determines whether the defence works.
The Two Forms of Self-Defence
Self-defence in Queensland is governed by sections 271 and 272 of the <em>Criminal Code 1899</em> (Qld). The Code draws a clear distinction between defending yourself against an unprovoked assault and defending yourself after you started it. The rules — and the limits — are different for each.
Section 271 — You Did Not Start It
If you were unlawfully assaulted and you did not provoke that assault, you may use such force as is <strong>reasonably necessary</strong> to defend yourself — provided the force you used was not intended to cause death or grievous bodily harm, and was not likely to.
There is an exception for life-threatening attacks. If the nature of the assault was such as to cause reasonable apprehension of death or grievous bodily harm, and you believed on reasonable grounds that you <strong>could not otherwise preserve yourself</strong> from death or grievous bodily harm, you may use whatever force is necessary — even force that could cause death or grievous bodily harm. The two requirements are that the fear was reasonable, and that the level of force was the only…
Section 272 — You Did Start It
If you provoked the fight — if you threw the first punch, or your behaviour started the altercation — self-defence is much harder to claim. Section 272 only applies where the other person escalated <strong>far beyond</strong> what you provoked, to the point that you reasonably feared death or grievous bodily harm.
Even then, when the force you used <strong>actually caused death or grievous bodily harm</strong>, section 272(2) imposes three hard limits. The defence is <strong>not available</strong> if:
You first started the assault with intent to kill or do grievous bodily harm
You used force causing death or grievous bodily harm <strong>before</strong> it became necessary to defend yourself — meaning you escalated first
You did not <strong>decline further conflict and retreat as far as was practicable</strong> before using that level of force
That third point is critical — and was confirmed as an independent exclusion by the High Court in <em>Dayney</em> [2024] HCA 22. Under section 272, there <em>is</em> an obligation to withdraw from the fight as far as practicable before using lethal or serious force. If you had the opportunity to step back and did not take it, the defence fails.