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Sexual Penetration of a Child Under 16 – Victoria, Australia

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Kristina Kothrakis

Author: Kristina Kothrakis

Practice area: Child offences

Kristina is a Director at Doogue + George and an LIV Accredited Criminal Law Specialist with over 18 years of criminal defence experience. Her depth of experience in this area means clients receive accurate, considered advice.

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Kristina authored this content and last revised it for accuracy on 7 September 2026.

Sexual penetration of a child under 16 is one of the most serious criminal offences under Australian law. The crime involves engaging in sexual penetration with a child who is under the legal age of consent, which is 16 years of age in Australia. Because these cases are complex and highly sensitive and may sometimes involve allegations relating to child abuse material, every allegation requires careful legal assessment.

What is the offence of Sexual Penetration of a Child Under 16?

Sexual Penetration of a Child Under 16 is an indictable Victorian offence under section 49B of the Crimes Act 1958 (Vic). It applies where a person intentionally sexually penetrates a child who is under 16 years of age.

Key points

  • Elements: Sexual penetration occurred, it was intentional, and the complainant was under 16 at the time.
  • Conduct covered: Penetration of the mouth, vagina or anus by a penis; and penetration of the vagina or anus by a finger/body part or object (slight penetration is sufficient).
  • Court jurisdiction: An indictable offence is generally heard before a judge in the County Court.

The maximum penalty for Sexual Penetration of a Child Under 16 is Up to 25 years’ imprisonment if the child was under 12, up to 15 years if the child was under the care, supervision or authority of the accused, and otherwise up to 10 years’ imprisonment.

Common defences may include consent in limited circumstances (including reasonable belief the child was 16 or older where the child was aged 12 or older and age-difference conditions), factual dispute, false allegations, mistaken identity, and duress.

Have you been accused of Sexual Penetration of a Child Under 16 Years of Age? You should speak to one of our lawyers as soon as you are able to do so. We will answer your important legal questions in confidence. We can advise you what your rights are when dealing with the police.

Police interview for Sexual Penetration of a Child

There are many things you need to know during the police investigation stage. If you do not know what to say, you risk harming your defence. Also, there may be evidence that needs to be protected. There might be people who need to be spoken to whom the police did not speak to. It is important to turn your mind to these matters early.
Our lawyers can go with you to the police interview to guide you through the process. The police interview can be a very intimidating and upsetting experience. You want someone there who is on your side. You want someone there who is going to advise you of what you should or should not do. Being accused of a sexual assault offence such as Sexual Penetration of a Child Under 16 Years of Age can be especially damaging. It can negatively impact your reputation, your employment, your ability to parent your children, and your ability to travel.

Sexual penetration of a child under 16

Pleading Not Guilty to Sexual Penetration of a Child Under 16

If you are pleading not guilty to Sexual Penetration of a Child Under 16 Years of Age, call us to discuss a strategy with one of our experienced criminal lawyers. We are criminal defence lawyers who are experts in running jury trials. It is important to consider the following questions: What will you tell the police during the interview? Are there potential witnesses whom the police have not considered speaking to? Is there relevant electronic evidence which needs to be gathered? Has the investigation been fairly done?

Pleading Guilty to Sexual Penetration of a Child Under 16Pleading guilty

A finding of guilt for Sexual Penetration of a Child Under 16 Years will almost always lead to an immediate prison sentence and being placed on the Sex Offender Register for a long period of time (15 years or life depending on the allegations). We are experienced in representing people who plead guilty to Sexual Penetration of a Child Under 16 Years of Age. We can prepare a plea strategy for you to get the best possible outcome. It is important in matters like this to get a psychological report, gather character references, and make sure that the sentencing judge hears your story.

  • Contact an expert in charges of Sexual Penetration of a Child Under 16 Years on (03) 9670 5111.
  • We provide a free first phone conference.
  • Download our free booklet to learn more about the Investigation and Court process.

Which court will the case be heard in?

This is not the kind of charge that will be heard in the Magistrates’ Court. Sexual Penetration of a Child Under 16 is an indictable offence that carries a significant penalty.

This charge is likely to be heard in the higher courts. Any indictment or summons for this charge will generally be before a judge in the County Court.

The statutory provisions

Penetration of a Child Under 16 when:

  • The accused took part in an act of sexual penetration with the complainant;
  • The accused intended to take part in that sexual act of penetration; and
  • The complainant was under the age of 16 at the time the sexual penetration took place.

Until 22 October 2014, the offence contained an additional element which states that for children aged between 12 and 16, the prosecution also had to prove that the child was not married to the accused. This was removed by section 5 of the Crimes Amendment (Sexual Offences and Other Matters) Act 2014 (Vic) and is no longer a requirement.

Legislation — Section 49B of the Crimes Act 1958

The law for this offence can be found in section 49 B of the Crimes Act 1958:

Sexual penetration of a child under the age of 16

  1. A person (A) commits an offence if—
    1. A intentionally—
      1. sexually penetrates another person (B); or
      2. causes or allows B to sexually penetrate A; or
      3. causes B—
        1. to sexually penetrate themselves; or
        2. to sexually penetrate another person (C); or
        3. to be sexually penetrated by C; and
    2. B is a child under the age of 16 years.
  2. A person who commits an offence against subsection (1) is liable to level 4 imprisonment (15 years maximum).
  3. The standard sentence for an offence against subsection (1) is 6 years.1

The elements in detail

Sexual Penetration of a Child Under 16 has the following three elements, all of which the prosecution must prove beyond reasonable doubt:

Element 1 – Sexual Penetration Occurred

The accused took part in an act of sexual penetration with the complainant

When the alleged penetration is by a penis, it may be of the vagina, anus, or the mouth of another person. When penetration is by a part of the body (a finger, for example) or by some other object, other than for medical or hygienic purposes, it may be of the vagina or the anus, but not the mouth.

The accused’s body part or object does not need to have gone all the way into the other person’s vagina, anus or mouth; even slight penetration is enough. However, mere touching of the relevant body part is not enough; there must have been actual penetration to some extent.2

Penetration only needs to have been slight or fleeting and does not need to have been committed for the purposes of sexual gratification.3 If the accused is male, the prosecution is not required to prove that he ejaculated into the woman.

Can the Prosecution prove that you sexually penetrated a child?

Meaning of vagina

Vagina is defined by section 35 of the Act and includes the “external genitalia” as well as a “surgically constructed vagina”. Rape can therefore be committed against transsexuals.

Element 2 – The Act Was Intentional

The accused intended to take part in that act of sexual penetration

The second element that the prosecution must prove beyond reasonable doubt is that the sexual penetration was intentional.

Element 3 – The Complainant Was Under 16

The complainant was under the age of 16 at the time the sexual penetration took place

The prosecution must establish that the occasions specified occurred during a period where the complainant was under 16 years of age.

Possible defences: Sexual Penetration of a Child Under 16

Consent is not a defence to a charge under this section save for circumstances where the child was aged 12 or older at the time of the alleged offence.4 Consent is only available as a defence where:

  1. the accused satisfies the court on the balance of probabilities that he or she believed on reasonable grounds that the child was aged 16 or older
    This belief is a matter which the accused must prove on the balance of probabilities. That is, the accused must prove that it is more likely than not that he or she believed on reasonable grounds that the complainant was aged 16 years or over for consent to be available as a defence. That is, the accused must satisfy a jury that it is more likely than not that he or she believed, on reasonable grounds, that the complainant was 16 or over.
  2. the accused was not more than 2 years older than the child
    An age difference of not more than 2 years is measured from the dates of birth of the complainant and the offender. The court does not round off the ages of the parties to the whole number of years. For example, if on the date of the offence the victim is aged 13 years and 5 months and the accused is aged 15 years and 6 months, the accused is more than 2 years older than the child and so consent is not a defence);5 or
  3. the accused satisfies the court on the balance of probabilities that he or she believed on reasonable grounds that he or she was married to the child.
    The offence specified in section 49B does not apply if the child is between the ages of 12 and 16 and if the people taking part in sexual penetration were married to each other.

Importantly, subsection 45(4)(4A) of the Act states that if consent is relevant, the prosecution carries the burden of proving the lack of consent.

Another defence that is often run in relation to Sexual Penetration of a Child Under 16 is a factual defence. Either the accused did not do it, or it never happened. We have found that offences of a sexual nature are crimes in which, for a variety of reasons, innocent people are often wrongly charged. A number of defences are potentially available depending on the particular circumstances of each case. These include false allegations, mistaken identity, duress and, importantly, the prosecution bears the burden of proving matters alleged beyond reasonable doubt, and in many cases they are not able to meet this burden.

In such cases of Sexual Penetration of a Child Under 16 Years, it is important that your defence team looks at inconsistencies that may arise in the different stages of the trial process. If you have been charged with an offence under this section or are being interviewed in relation to this offence, it is important that you seek advice from a criminal defence lawyer as soon as possible. A finding of guilty is likely to result in a sentence that involves an immediate term of imprisonment.

In a trial, the questions a judge will ask the jury to consider (when consent is in issue) are:

  1. Did the accused take part in an act of sexual penetration with the complainant?
    If yes, then he will ask question 2. If no, then the accused is not guilty of Sexual Penetration of a Child Under 16.
  2. Did the accused intend to take part in an act of sexual penetration with the complainant?
    If yes, then he will ask question 3. If no, then the accused is not guilty of Sexual Penetration of a Child Under 16.
  3. Was the complainant under the age of 16 at the time the act of sexual penetration took place?
    If yes, then he will ask question 4. If no, then the accused is not guilty of Sexual Penetration of a Child Under 16.

Consent is only relevant if you are satisfied that the defence has proven, on the balance of probabilities, both that:

  1. The accused believed that the complainant was aged 16 or older at the time the act of sexual penetration took place; and
  2. The accused’s belief that the complainant was aged 16 or older was based on reasonable grounds.

If consent is relevant, the prosecution must prove, beyond reasonable doubt, that:

  1. The complainant did not consent to taking part in the act of sexual penetration; and
  2. The accused was aware that the complainant was not or might not be consenting. A judge will ask:
  1. Did the sexual penetration occur without the complainant’s consent?
    If yes, then he will ask question 5. If no, then the accused is not guilty of Sexual Penetration of a Child Under 16.
  2. At the time of sexual penetration, was the accused aware that the complainant was not consenting or that s/he might not be consenting?
    If yes, then the accused is guilty of Sexual Penetration of a Child Under 16 (so long as you also answered yes to questions 1, 2, 3 and 4). If no, then the accused is not guilty of Sexual Penetration of a Child Under 16.

Maximum penalty for section 49B of the Crimes Act 1958

The maximum penalty depends on the age of the child. If the child was under the age of 12, then the maximum prison term is 25 years. If under the care, supervision, or authority of the accused, the penalty is a maximum imprisonment of 15 years and, in any other circumstances, a maximum imprisonment of 10 years.

Sentencing for Sexual Penetration of a Child Under 16

To view sentencing decisions by Victorian County Courts for sexual offences against children, visit this page.

In Victoria, penalties for certain sex offences have become more punitive. A plea of guilty to Sexual Penetration of a Child Under 16 Years of Age committed on or after 20 March 2017 is a Class 1 offence and will result in a prison sentence. Parliament has also introduced a standard sentence scheme which a sentencing Judge must use as a guidepost in sentencing. The standard sentence for Sexual Penetration of a Child Under 16 Years of Age is 6 years’ imprisonment.

For historical cases of Sexual Penetration of a Child Under 16 Years of Age where a substantial time has passed since the offending, a properly conducted plea in mitigation may result in the sentencing judge placing you on a Community Correction Order or imposing a Suspended Sentence.

In the case of DPP v Vella [2017] VCC 71, the County Court Judge said that the law does not accept that there is an equal power balance in a sexual relationship between a child and an adult. ‘The law is intended to protect young people from premature sexual relationships, and there is a presumption that harm will flow from this type of offending’.

Sentencing in the higher courts of Victoria

Sentencing statistics in the higher courts show that imprisonment is the most common outcome for sexual penetration of a child aged 12 to under 16, imposed in 75% of cases. Community correction orders account for 21.5% of sentences, while youth justice centre orders represent 2.6% of outcomes. A further 1% of matters fall into other sentencing categories. These figures indicate that there is a strong likelihood of imprisonment when this offence is dealt with in the higher courts. The distribution reflects the seriousness with which courts treat offences involving children, although the final sentence will depend on the specific circumstances of the case and the offender’s personal background.

FAQ About Sexual Penetration of a Child Under 16

No. A child under 16 cannot legally consent to sexual activity. Consent is generally not a defence to this charge, and the law treats the complainant's age as a central issue regardless of whether the child appeared to agree to the sexual activity.
Consent is only available as a defence in limited circumstances where the child was aged 12 or older at the time of the alleged offence. It requires specific conditions, including that the accused believed on reasonable grounds that the child was 16 or older, and that the accused was not more than 2 years older than the child. A separate condition is a belief on reasonable grounds that the accused was married to the child.
The age difference is measured from the dates of birth of the complainant and the accused. Ages are not rounded to whole years. As an example given, if the child is 13 years and 5 months and the accused is 15 years and 6 months at the time of the alleged offence, the accused is more than 2 years older, and consent is not available as a defence.
No. Sexual penetration only needs to have been slight or fleeting and does not need to have been committed for the purposes of sexual gratification. Where the accused is male, it is also not necessary to prove ejaculation occurred.
A finding of guilt will almost always lead to an immediate prison sentence. It also involves being placed on the Sex Offender Register for a long period of time, described as 15 years or life depending on the allegations. Separately, a conviction results in automatic inclusion on the Sex Offenders Register.
Yes. Before 22 October 2014, for children aged between 12 and 16 the prosecution also had to prove the child was not married to the accused. That additional element was removed by section 5 of the Crimes Amendment (Sexual Offences and Other Matters) Act 2014 (Vic) and is no longer a requirement.

Speak to a Criminal Lawyer About This Charge

A charge of sexual penetration of a child under 16 carries extremely serious legal consequences and, like many separate offences under the Crimes Act 1958 (Vic), should never be handled without experienced legal advice. If you have been charged and are being investigated, speaking with a criminal lawyer as early as possible rather than relying solely on general information from a law society or other sources can help you understand the allegations, protect your legal rights, and prepare an appropriate defence.

At Doogue + George Defence Lawyers, we carefully examine the prosecution’s evidence, explain the elements of the offence and identify the available legal defence. We also represent our clients in court, ensuring a fair outcome and peace of mind. Speak with our experts today to navigate the legal process with confidence.

[1] Australian legal Information Institute. “Crimes Act 1958 – Section 49B: Sexual penetration of a child under the age of 16.” Austlii.edu.au. http://classic.austlii.edu.au/au/legis/vic/consol_act/ca195882/s49b.html (accessed June 22, 2020).
[2] See Anderson v R [2010] VSCA 108.
[3] R v Dunn 15/4/1992 CA NSW.
[4] Section 45(4) of the Act.
[5] Stannard v DPP [2010] VSCA 165.