Self-Defence as a Defence to Assault in Queensland
Assault — 2026-06-20 — by Sacha Sarah Smith, Civic Law
When does self-defence apply to an assault charge in Queensland? The legal test, the limits, and what the law actually requires.
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. 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 distinction between defending yourself against an unprovoked assault and defending yourself after you started it. The rules 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 whatever force is reasonably necessary to defend yourself — as long as the force you used was not intended to cause death or grievous bodily harm, and was not likely to.
There is an exception. If the attack was so serious that you genuinely feared for your life or feared serious injury, you may use whatever force is necessary to defend yourself — even force that could cause death or grievous bodily harm. The question is whether that fear was reasonable in the circumstances.
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 far beyond what you provoked. The classic scenario is a push that turns into a knife attack. You started it, but the response was so extreme that you feared for your life. The law gives a narrow window for that — but it is narrow.
If you started the fight intending to kill or cause grievous bodily harm, section 272 does not help you at all.
What "Reasonably Necessary" Actually Means
This is the core question in every self-defence case: was the force you used reasonably necessary to deal with the threat you were facing?
The law assesses this from your perspective at the time — not with the benefit of hindsight, and not from a position of calm reflection. Courts recognise that people in violent situations do not have time to carefully weigh their options. The test is whether a reasonable person in your position would have believed the force was necessary.
That said, there has to be some connection between the threat and your response. Punching someone who raised their fist at you is likely proportionate. Kicking someone on the ground who is no longer a threat is not. The further your response goes beyond the original threat, the harder self-defence becomes.