A practical guide to the consent issues that decide most sexual assault trials in Canada
Almost every contested sexual assault trial in Canada turns on a single word: consent. Identity is rarely in dispute. The fact that sexual touching occurred is often admitted. What is fought over is whether the complainant agreed, whether she was capable of agreeing, and whether the accused honestly and reasonably understood that she had agreed.
That makes consent the map of the defence. But the law does not treat consent as one question. It treats it as several, in a fixed order, each governed by its own rules and its own evidence. Understanding that structure is what separates a defence that has traction from one that collapses on a legal error.
What Does the Crown Must Prove
Sexual assault has three physical elements and two mental elements. The Crown must prove all five beyond a reasonable doubt (R. v. Ewanchuk, [1999] 1 S.C.R. 330; R. v. G.F., 2021 SCC 20, at para. 25):
- Touching— the accused intentionally touched the complainant.
- Of an objectively sexual nature— judged by whether a reasonable observer would see a sexual or carnal context to the contact ( v. Chase, [1987] 2 S.C.R. 293).
- Without consent— assessed purely by reference to what was in the complainant’s mind at the time.
- Intention to touch— sexual assault is a general intent offence.
- Knowledge of non-consent— the accused knew of, or was reckless or wilfully blind to, the absence of consent.
The critical point for the defence is that the word “consent” means two different things at two different stages. At the actus reus stage, consent means the complainant, in her own mind, wanted the touching to take place. At the mens rea stage, consent means the complainant affirmatively communicated agreement by words or conduct (R. v. Barton, 2019 SCC 33, at paras. 89–90). Conflating the two is the single most common source of appellate error — in both directions.
Avenue One: Raising a Doubt About Subjective Consent
At the first stage the accused’s perception is irrelevant. Only the complainant’s state of mind counts. But this does not mean her assertion of non-consent ends the inquiry. Ewanchuk expressly preserves the defence’s right to argue that “the complainant’s words and actions, before and during the incident, raise a reasonable doubt against her assertion” (para. 29). As the Nova Scotia Court of Appeal put it in R. v. Percy, 2020 NSCA 11, merely because a complainant says she did not consent “does not end the work of the trier of fact.”
This is a credibility and reliability exercise, and the trier of fact may accept some, all, or none of the evidence (R. v. Saha, 2025 ONCA 488). Contemporaneous messages, third-party observations, the complainant’s conduct immediately afterwards, and internal inconsistencies in her account are all fair game. In R. v. Norris, 2020 ONCA 847, the Court of Appeal confirmed that a complainant’s words and actions around the time of the incident are legitimate material for this challenge — though it also warned that a recorded “yes” is not automatically determinative.
A related and underused distinction: consent is about voluntary agreement, not desire. In R. v. S.M., 2026 NSCA 30, the Nova Scotia Court of Appeal allowed an appeal where the trial judge collapsed the question of whether the complainant wanted the activity into whether she agreed to it. Consent is not invalidated merely because the complainant was persuaded or convinced. Persistence in asking is not a crime; persistence in touching after refusal is (R. v. T.R., 2016 ABCA 355).
Avenue Two: Capacity
Where the complainant was intoxicated, capacity often becomes the battleground. G.F. settled the test, and R. v. Rioux, 2025 SCC 34, reaffirmed it: the complainant must have had an operating mind capable of understanding (1) the physical act, (2) that it was sexual in nature, (3) the specific identity of the partner, and (4) that she had a choice to refuse. All four must be present.
Several propositions favour the defence here, and they are frequently misapplied at trial:
- Intoxication is not incapacity.Drunkenness, disinhibition, poor judgment, regret, and alcohol-induced memory loss do not equate to incapacity. “A drunken consent is still a valid consent” ( v. Tahan, 2022 ONSC 1103). Only impairment that deprives the complainant of an operating mind will do.
- Blackout is not evidence of non-consent.Absent expert evidence, memory loss “is direct evidence of nothing except the fact that the witness cannot testify as to what happened” ( v. J.R., 2006 CanLII 22658 (Ont. S.C.J.), aff’d 2008 ONCA 200).
- The blackout alternative must be excluded.Where the Crown relies on circumstantial evidence, the trier of fact must consider that a complainant in blackout may have been conscious, apparently functioning normally, and capable of consenting ( v. Garciacruz, 2015 ONCA 27; R. v. Green, 2024 ABCA 118). Guilt must be the only rational inference.
That said, Rioux also confirms that a conviction can rest on circumstantial evidence alone, and that outward signs of impairment — loss of gross motor skills, vomiting, loss of bladder control, slurred speech — must be weighed. Defence counsel should expect the Crown to build capacity from before-and-after evidence and from witnesses other than the complainant.
Avenue Three: The Scope of What Was Consented To
Consent is act-specific. Agreement to one form of touching is not agreement to all. Since R. v. Kirkpatrick, 2022 SCC 33, consent can also be conditional: where condom use is a condition of agreement, sex without a condom is a different physical act and falls outside the consent given. Kirkpatrick confines R. v. Hutchinson, 2014 SCC 19, to deception cases analysed under the fraud provision.
This cuts both ways. It expands the Crown’s reach into conditions of the act, but it also means the defence must pin down precisely what was agreed and how that was communicated. An accused who testifies needs to be able to say what conditions he understood and how he knew they were satisfied. Conversely, the law does not require a fresh verbal consent at every step of an encounter — the Ontario Court of Appeal rejected that “unnecessarily high standard” in R. v. J.H.C., 2026 ONCA 285. Consent must be actual and ongoing; it need not be spoken.
Avenue Four: Honest but Mistaken Belief in Communicated Consent
This is the mens rea defence, and it is narrower than most people assume. Under s. 273.2 of the Criminal Code, it is unavailable where the belief arose from self-induced intoxication, recklessness or wilful blindness; where the accused failed to take reasonable steps; or where there is no evidence that agreement was affirmatively expressed by words or actively expressed by conduct.
The defence must first clear an air of reality threshold. It thrives where the two accounts describe the same events but interpret them differently (R. v. Park, [1995] 2 S.C.R. 836). Where the versions are diametrically opposed — she says she resisted throughout, he says she was an eager participant — the case is usually pure credibility and the defence does not arise.
The exception is “cobbling.” Where it is realistically possible to splice parts of each account into a coherent third version in which the accused honestly misread the situation, the defence must be left to the trier of fact (R. v. Othman, 2025 ONCA 449). The classic scenario is a complainant with no memory of part of the encounter: the gap in her evidence leaves room for the accused’s account (R. v. Esau, [1997] 2 S.C.R. 777; R. v. J.B., 2024 ONCA 465). But there must be evidence of genuine ambiguity — evidence capable of explaining how the accused could have misapprehended non-consent as consent. Where no such ambiguity exists, there is “no middle ground” (R. v. H.S., 2026 ONCA 184).
Reasonable steps: the gatekeeper
Section 273.2(b) is a precondition: no reasonable steps, no defence (Barton, at para. 104). The test is quasi-objective — identify what the accused actually knew, then ask whether a reasonable person with that knowledge would have taken further steps. R. v. Al-Akhali, 2025 ONCA 229, distills six governing principles. In practice, more is required where:
- the activity is invasive or risky, such as unprotected intercourse;
- the parties are strangers or unfamiliar with each other;
- the complainant has previously rejected an advance;
- the complainant appears intoxicated or vulnerable;
- the complainant appears asleep, unconscious, or passed out.
Steps must also be taken for each act where circumstances change. And certain “steps” are legally incapable of being reasonable: relying on silence, passivity, or ambiguous conduct, or “testing the waters” with further touching, are mistakes of law, not steps (Barton, at para. 107; R. v. I.A.D., 2021 ONCA 110).
Arguments That Will Fail
An equally important part of the defence is knowing what not to say. Advancing a prohibited line of reasoning does more than fail; it damages credibility and can attract adverse findings.
- Implied consent.There is no such defence. A belief that silence, passivity or ambiguous conduct amounts to consent is a mistake of law (Ewanchuk, at para. 51).
- Broad advance consent.Consent cannot be given in advance for activity of undefined scope, and an unconscious person cannot consent ( v. J.A., 2011 SCC 28).
- Propensity reasoning.Prior sexual activity cannot be used to suggest the complainant was more likely to have consented — the first of the “twin myths” ( v. Seaboyer, [1991] 2 S.C.R. 577; s. 276). Prior activity can sometimes be admitted to explain how consent was customarily communicated between these two people (R. v. Goldfinch, 2019 SCC 38; R. v. T.S., 2025 BCCA 25), but only through a s. 276 application and never as a propensity argument.
- Flirtation, clothing, or sexual expression as consent.Expressly rejected in v. MacMillan, 2024 ONCA 115 — as was any suggestion that physical response indicates consent.
- “No meant yes.”Once unwillingness is expressed, the accused must obtain an unequivocal yes before proceeding; lapse of time and silence will not do.
Watch for Vitiation
Even where apparent agreement exists, it may be legally ineffective. Section 265(3) vitiates consent obtained by force, threats, fear, fraud, or the exercise of authority; the complainant’s fear need not be reasonable. Section 273.1(2)(c) is broader still, capturing consent induced by abusing a position of trust, power or authority — no coercion required, only exploitation of the imbalance (R. v. Snelgrove, 2019 SCC 16; R. v. Blanco, 2026 ONCA 436). Inducement may be inferred from the circumstances, particularly with a vulnerable or naive complainant. But the provision does not criminalise every sexual act within a relationship of trust: the Crown must prove both the position of trust and that its abuse induced the activity (R. v. Dupuis, 2023 ONSC 7238).
Where injury occurs, consent is vitiated where significant bodily harm is caused and the accused intended, was reckless or wilfully blind to, or ought objectively to have foreseen that harm (R. v. Barton, 2024 ABCA 34).
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