News · Criminal law explainer
What does beyond reasonable doubt mean?
Beyond reasonable doubt is one of the best-known phrases in the law, and one of the most important protections an accused has. This note explains what it means, why the burden is on the prosecution, how it differs from the standard in civil cases, and what it means for a person facing a criminal charge.
By Aaron Kernaghan · Published 3 September 2026
Beyond reasonable doubt is the high standard of proof the prosecution must meet to convict a person of a criminal offence. It means the court must be sure of guilt, not merely think the person probably did it. The burden is on the prosecution, and an accused does not have to prove innocence. If there is a reasonable doubt, the person must be acquitted.
What is the standard of proof?
In a criminal case, the prosecution must prove the charge beyond reasonable doubt. This is the highest standard of proof in the law. It means the court, whether a magistrate, judge, or jury, must be satisfied of the person's guilt to a high degree of certainty before it can convict.
Courts are generally careful not to over-explain the phrase, because it is meant to carry its ordinary meaning. It requires the tribunal to be sure of guilt, not merely to think it likely.
What does it actually require?
Beyond reasonable doubt does not mean beyond all possible doubt, because almost anything is open to some fanciful doubt. It means the court must have no reasonable doubt about the person's guilt. A doubt based on reason and common sense, arising from the evidence or the lack of it, is a reasonable doubt.
So if, after considering all the evidence, the court is left with a reasonable doubt, it must acquit. Being fairly sure, or thinking the person probably did it, is not enough.
Why is the burden on the prosecution?
The burden of proof is on the prosecution because a person is presumed innocent until proven guilty. It is for the state, which brings the charge, to prove it, not for the accused to prove their innocence. This is a foundation of the criminal justice system.
So an accused does not have to give evidence, call witnesses, or prove anything. They can simply require the prosecution to prove the charge, and if it cannot do so to the required standard, the person is entitled to be acquitted.
How does it differ from the civil standard?
Civil cases, such as a claim for money or an AVO, are decided on the balance of probabilities, meaning more likely than not. That is a much lower standard than beyond reasonable doubt. The higher criminal standard reflects that a criminal conviction carries punishment and stigma.
This is why a person can be found not guilty in a criminal case but still be the subject of a civil order on the same facts: the standards are different. The criminal standard is deliberately demanding.
What does it mean for an accused?
For an accused, the standard is a powerful protection. The defence does not have to prove innocence; it can focus on whether the prosecution has proved each element beyond reasonable doubt. Raising a reasonable doubt about any element is enough to require an acquittal.
This shapes how a defended matter is run. Our notes on defended hearings and charge versus conviction explain how the standard is applied in practice.
Frequently asked.
What does beyond reasonable doubt mean?
The high standard of proof the prosecution must meet to convict. The court must be sure of guilt, not merely think the person probably did it. If there is a reasonable doubt, the person must be acquitted.
Does it mean beyond all doubt?
No. It does not mean beyond all possible doubt, because almost anything is open to some fanciful doubt. It means no reasonable doubt, based on reason and common sense, about the person's guilt.
Who has to prove a criminal case?
The prosecution. A person is presumed innocent, and it is for the state that brings the charge to prove it. The accused does not have to prove innocence or give evidence.
How is it different from the civil standard?
Civil cases are decided on the balance of probabilities, meaning more likely than not, which is a much lower standard. The higher criminal standard reflects that a conviction carries punishment and stigma.
What does the standard mean for an accused?
It is a powerful protection. The defence can focus on whether the prosecution has proved each element beyond reasonable doubt. Raising a reasonable doubt about any element is enough to require an acquittal.
To speak to a criminal defence lawyer, call Aaron Kernaghan on 0421 717 019.
This article is written by Aaron Kernaghan, criminal defence lawyer at Good Legal Lawyers, as at 3 September 2026. It is commentary and reflects the personal opinion of the author only. It is not legal advice, it is not a substitute for advice on your own matter, and it does not purport to be accurate or complete. Any matter referred to may be before the court and any person charged is presumed innocent. For advice on a specific matter, contact Aaron Kernaghan on 0421 717 019 or contact the firm.
More criminal-law commentary by Aaron Kernaghan.
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