A person who intentionally deceives someone else for their own benefit (or for the benefit of someone else) or to cause a detriment to someone is guilty of an offence under section 139 of the Criminal Law Consolidation Act 1935 (SA).
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Deception Key Facts
| Offence | Dishonestly deceiving another person to gain a benefit, cause a detriment, or influence a public duty, under Section 139 of the Criminal Law Consolidation Act 1935 (SA). |
| Maximum Penalty | Maximum penalty is up to 10 years imprisonment for basic deception; aggravated or large-scale deception may carry higher penalties. |
| Typical Sentence | Sentences vary: can range from fines and suspended sentences for minor deception to significant prison terms for large or repeated frauds involving planning or breach of trust. |
| Which Court? | Minor deception cases may be heard in the Magistrates Court; larger or more serious matters are heard in the District Court. |
| Process Timeline | Complaint or Investigation → Charge → Arrest or Summons → Police Interview → Bail Consideration → Magistrates Court → Possible committal to District Court → Sentencing if guilty. (Average: 6-12 months) |
| Possible Defences | 1. No Dishonesty - Arguing there was no intent to deceive. 2. No Benefit or Detriment - Showing there was no actual benefit gained or loss caused. 3. Mistaken Belief - Proving a genuine belief that the conduct was lawful. |
| What The Prosecution Must Prove | If you are charged with deception, the prosecution must prove that: 1. You deceived (i.e., you made a misrepresentation to) another person (either by words or conduct); 2. By deceiving that person you either: - Dishonestly benefited yourself (e.g., by way of gaining property or money); or - Dishonestly benefited another person; or - Dishonestly caused a detriment to that person (e.g., by way of loss of property, money or opportunity). |
Deception Case Scenarios
Below are examples of how deception may be charged and sentenced in South Australia. These examples are not indicative of a specific outcome and are for informational purposes only.
Low-Level Offence
Mid-Level Offence
High-Level Offence
Low-Level Offence
Scenario:
A university student falsely claimed full-time enrollment to receive a public transport concession for 6 months, despite having withdrawn from their course. The deception led to minor financial benefits.
What to expect:
Charged with a basic deception offence, the student pleaded guilty and fully cooperated with investigators. The court acknowledged the limited financial impact and imposed a fine and good behaviour bond for 12 months.
Mid-Level Offence
Scenario:
A retail employee used customer return data to process fraudulent refunds to their own account, totalling just under $10,000 over 9 months. The deception involved systematic misuse of the store’s point-of-sale system.
What to expect:
The court found the conduct to be deliberate and sustained. A conviction was recorded and the offender received an 18-month suspended sentence with mandatory restitution.
High-Level Offence
Scenario:
A power of attorney for an elderly relative used that authority to siphon over $120,000 from the victim’s bank account over two years. The funds were spent on personal items and travel, with deliberate concealment of bank statements.
What to expect:
This was prosecuted as an aggravated deception offence, due to the offender’s breach of trust and the victim’s vulnerability (aged 82). The court imposed a 5-year prison term, with a non-parole period of 2.5 years, citing exploitation and ongoing concealment.
Disclaimer: The examples above are provided for informational purposes only and do not guarantee a specific result in your matter. Sentencing decisions can vary significantly depending on individual circumstances, including the severity of the offence, intent, prior criminal history and other legal factors. For case-specific advice, get in touch with one of our expert criminal lawyers.
Our Results For Similar Offences
To view our past case results, please click the links below:
Centrelink Fraud
Theft of Funds from Employer
Deception FAQ’s
If you need more information about deception offences in South Australia, these FAQs answer the most common questions.
What is considered a deception offence under South Australian law?
A deception offence occurs when a person intentionally deceives another by words or conduct to gain a dishonest benefit or cause a loss to someone. This can include lying about facts, intentions, or even the law to obtain money, goods, services, or opportunities.
What legislation governs deception charges in South Australia?
Deception offences are primarily covered under section 139 of the Criminal Law Consolidation Act 1935 (SA). Related dishonest conduct offences, such as false pretences or interference with merchandise, are also addressed in other parts of the Act and the Summary Offences Act 1953 (SA).
What is embezzlement and how is it treated under South Australian law?
Embezzlement applies where a clerk or employee fraudulently takes or uses property that came into their possession through their employment. In South Australia, this is treated as a form of theft, and the employee is liable for stealing from their employer.
What penalties apply for embezzlement?
The maximum penalty for embezzlement is 10 years’ imprisonment. If the value of the property taken exceeds $5,000, the matter is classified as a Table 1 offence and can be dealt with in the District Court.
What makes a deception offence ‘aggravated’?
Aggravated deception includes factors like:
- Victims under 12 or over 60
- Offences committed by someone in a position of trust
- Deception involving domestic partners, children, or disabled victims
- Deception in connection with organised crime
These are outlined in section 5AA of the Criminal Law Consolidation Act 1935 (SA).
Can deception include future promises or intentions?
Yes. Deception can involve false representations about future events or intentions, not just past or present facts. For example, falsely claiming you intend to repay borrowed money when you never intended to can be considered deceptive conduct.
What are some examples of deception offences in South Australia?
Examples include:
- Falsifying documents to receive a benefit
- Pretending to be someone else to gain access to financial resources
- Lying to an employer or government agency for monetary gain
- Switching labels in a store to pay a lower price (dishonest interference with merchandise)
Is spiritual deception a criminal offence in South Australia?
Yes. Under section 40 of the Summary Offences Act 1953 (SA), it is illegal to fraudulently pose as a spiritualist, medium, or clairvoyant with the intent to deceive. The maximum penalty is 2 years’ imprisonment or a $10,000 fine.
What are common defences to a charge of deception?
It may be a defence to the charge that you:
- were under duress;
- have a factual dispute;
- had a lack of intention;
- identification dispute; or
- suffer from a mental impairment.
Can deception charges relate to Centrelink or tax fraud?
Yes. Deception can apply to a broad range of Commonwealth or state offences, including:
- Centrelink fraud
- Tax evasion
- Employment or banking fraud
In such cases, you may also be prosecuted under Commonwealth criminal law, depending on the entity defrauded.
What should I do if I'm being investigated for deception?
Do not make any statements to police or investigators without first seeking legal advice. Deception charges are serious and carry lengthy prison sentences. Contact a criminal defence lawyer in Adelaide immediately to protect your rights.
Can a person be charged for attempting deception even if it didn’t work?
Yes. Attempted deception can still be prosecuted if there was intent to deceive and an overt act toward that goal—even if no actual benefit was obtained.
What is the difference between theft and deception under SA law?
While both involve dishonest conduct:
- Theft requires physically taking property without consent.
- Deception involves using false representations to induce the victim to give up property or money voluntarily.
Both are serious offences but follow different legal frameworks.
Is it still deception if the victim didn’t lose anything?
Yes. If you attempted to deceive someone, or if your deception created a risk of loss, you may still be guilty under section 139. The offence includes causing a risk of detriment, not just actual loss.
How are deception cases handled in South Australian courts?
Deception matters are typically heard in the Magistrates Court if minor, or the District Court for serious offences or where aggravating circumstances apply. The case complexity and maximum penalty influence the court level.
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