Sexual offences involving young people are among the most serious charges in Canadian criminal law, and they work differently from most criminal matters: they turn on age , not simply on whether someone agreed. Below a certain age, consent is legally irrelevant — and an honest but mistaken belief about age will not help unless the accused took real steps to check.
As founding partner Jeff Mass notes:
"Age-of-consent cases require precision. One misunderstanding, one assumption, or one poorly worded statement can decide a person's entire future."
The age of consent is the age at which a person can legally agree to sexual activity. It is set by section 150.1 of the Criminal Code , which provides that consent is not a defence to a range of offences when the complainant is under 16.
"Sexual activity" is interpreted broadly. It is not limited to intercourse and can include sexual touching, oral sex, sexualized kissing, and creating or sharing sexual images — essentially any conduct carried out for a sexual purpose. Parliament treats sexual conduct with young people as a matter of public protection, and courts interpret the provisions strictly.
The starting point is straightforward: a person must generally be at least 16 years old to consent to sexual activity. Even where a young person under 16 appears mature, agrees, initiates the activity, or says they are older, that does not amount to legal consent once the complainant is under 16.
For 16- and 17-year-olds, the general rule is that they can consent — but the law removes that ability where a power imbalance exists. Under Criminal Code s. 153 , sexual activity with a 16- or 17-year-old is an offence (sexual exploitation) where the older person is in a position of trust or authority (for example, a teacher, coach, employer, or caregiver), the young person is in a relationship of dependency , or the relationship is exploitative .
In these situations the age of consent effectively becomes 18. Courts look past job titles to the real dynamics of the relationship: s. 153(1.2) lets a judge infer exploitation from factors such as the young person's age, the age difference, how the relationship developed, and the degree of control or influence involved. This layer protects people under 18 — it does not make sexual activity between adults criminal simply because one has more influence, status, or money.
As partner Robbie Tsang explains:
"Exploitation isn't just about age. It's about power, vulnerability, and the ability to influence a young person's decisions."
Canadian law recognizes that consensual activity between teenagers close in age is not inherently exploitative. The close-in-age exceptions in s. 150.1(2) and (2.1) prevent teens from being criminalized for peer relationships — but they are narrow and strictly applied.
| Age of younger person | May consent to a partner… | Conditions |
|---|---|---|
| 14–15 | less than 5 years older | No trust, authority, dependency, or exploitation |
| 12–13 | less than 2 years older | No trust, authority, dependency, or exploitation |
| Under 12 | — | Cannot legally consent in any circumstance |
If the age gap exceeds the permitted range — even slightly — the exception disappears entirely, and the Crown does not have to prove exploitation. Worked examples:
Many offences depend directly on the complainant's age rather than on consent. The most common are below.
| Offence | Section | Core conduct | Penalty (current Criminal Code) |
|---|---|---|---|
| Sexual interference | s. 151 | Touching, for a sexual purpose, a person under 16 | Indictable: 1 yr min – 14 yr max; summary: 90 days min – 2 yrs less a day max |
| Invitation to sexual touching | s. 152 | Inviting/counselling a person under 16 to sexual touching | Same as s. 151 |
| Sexual exploitation (16–17) | s. 153 | Sexual activity with a 16–17-year-old in a trust/authority/dependency or exploitative relationship | Same as s. 151 |
| Exposure to a person under 16 | s. 173(2) | Exposing genitals, for a sexual purpose, to a person under 16 | Indictable: 90 days min – 2 yr max; summary: 30 days min – 6 mo max |
| Child luring | s. 172.1 | Using telecommunication to communicate with a minor to facilitate a sexual offence | Hybrid; max 14 yrs (indictable). Mandatory minimums struck down in R. v. Bertrand Marchand, 2023 SCC 26 |
| Child pornography | s. 163.1 | Making, distributing, or possessing sexual images of a person under 18 | Serious indictable/hybrid offence with mandatory minimums; note the age here is 18, not 16 |
Two points are often misstated online. First, sexual interference (s. 151) carries a mandatory minimum of 90 days on summary conviction and one year on indictment — not "six months." Second, while several of these offences carry mandatory minimums, child luring no longer does : the Supreme Court found the s. 172.1 minimums to be cruel and unusual punishment contrary to s. 12 of the Charter . Luring remains serious (up to 14 years) — courts simply have discretion on the floor.
For a complainant under 16, consent is legally irrelevant to sexual-touching offences (s. 150.1(1)) — even if the young person initiated the relationship, lied about their age, appeared mature, or gave clear agreement.
The narrow exception is a genuine, reasonable mistake about age. Under s. 150.1(4), a mistaken belief that the complainant was 16 or older is a defence only if the accused took all reasonable steps to ascertain age. The same requirement applies to the close-in-age exceptions (s. 150.1(6)) and to the 18-year threshold for trust/authority offences (s. 150.1(5)). It is a demanding standard.
Courts assess reasonableness objectively — by what the accused actually did, not by how the complainant looked.
Because this defence is fact-specific, the underlying communications and records usually decide it.
Beyond any jail term, a conviction can bring lasting consequences. Courts can impose prohibition orders under s. 161 (restricting contact with young people, attendance at parks or schools, and internet use), and a conviction can affect travel — the United States frequently refuses entry — and employment involving minors.
A conviction for a designated sexual offence also engages the national sex offender registry (SOIRA). Registration is not an automatic lifetime listing in every case: following R. v. Ndhlovu , 2022 SCC 38 and Parliament's Bill S-12 response, whether an order is made — and for how long — depends on the offence and the offender's history. For many child sexual offences a registration order is required, and lifetime registration applies in defined situations, but the older shorthand that "any conviction means the registry for life" overstates the current law.
If you are being investigated or charged, early advice matters. The sexual assault defence lawyers at Mass Tsang LLP have defended age-related sexual-offence cases across the Greater Toronto Area, where accurately interpreting the age-of-consent rules is often central. As a practical matter, it is generally wise not to speak to police, contact the complainant, or delete phones or messages before getting legal advice.
The general age of consent is 16 . It rises to 18 where the older person is in a position of trust or authority, the young person is in a relationship of dependency, or the relationship is exploitative.
A 14- or 15-year-old may consent to a partner less than five years older, and a 12- or 13-year-old to a partner less than two years older — only where there is no trust, authority, dependency, or exploitation. Children under 12 cannot legally consent.
Not on its own. A mistaken belief about age only helps if the accused took all reasonable steps to ascertain the complainant's real age (s. 150.1(4)). Relying on appearance alone is not enough.
Several do (for example, sexual interference under s. 151). However, the mandatory minimums for child luring (s. 172.1) were struck down by the Supreme Court of Canada in R. v. Bertrand Marchand , 2023 SCC 26, though luring remains a serious offence.
