In Canada, libel and slander are primarily civil matters , not criminal offences. However, the Criminal Code still recognizes criminal defamatory libel , and in rare but serious cases, defamatory conduct can result in criminal charges, fines, and imprisonment.
Understanding the distinction between civil defamation and criminal defamatory libel is critical. Many Canadians assume that libel and slander are "not crimes anymore." That assumption is partially incorrect and can lead to serious legal consequences — especially in cases involving malicious intent, false allegations, or reputational harm tied to criminal accusations.
This article explains how libel and slander are treated under Canadian law, when defamation becomes criminal, what penalties apply, and how courts balance defamation law with freedom of expression under the Charter.
Defamation refers to false statements that harm a person's reputation. Canadian law recognizes two main forms:
In modern practice, most defamation cases involve libel, particularly online content.
In Canada, libel and slander are most commonly pursued as civil claims rather than criminal prosecutions.
To succeed in a civil defamation action, the plaintiff must generally prove:
Once these elements are established, falsity and damages are presumed, subject to available defences.
Civil remedies may include damages, injunctions, or retractions — not jail.
Canada has not repealed criminal defamation. The relevant provisions are found in Part VII of the Criminal Code , R.S.C. 1985, c. C-46.
Section 298 — Defamatory Libel
"A defamatory libel is a matter published, without lawful justification or excuse, that is likely to injure the reputation of any person by exposing them to hatred, contempt or ridicule."
— Criminal Code, s. 298
This definition focuses on publication and serious reputational harm.
Section 299 — Publication of Defamatory Libel
A person publishes defamatory libel if they exhibit it in public, cause it to be read or seen, or knowingly circulate it. Publication includes online content, social media posts, emails, and digital media.
Section 300 — Defamatory Libel Known to Be False
"Every person who publishes a defamatory libel knowing that it is false is guilty of an indictable offence."
— Criminal Code, s. 300
Maximum penalty: Up to 5 years imprisonment (indictment) or summary conviction (hybrid offence since 2019 amendments)
This is the most serious criminal defamation offence and requires proof of knowledge of falsity .
Section 301 — Defamatory Libel (general publication)
"Every person who publishes a defamatory libel is guilty of an offence punishable on summary conviction."
— Criminal Code, s. 301
Note: Section 301 was declared of no force and effect in R. v. Lucas , [1998] 1 SCR 439, as an unjustifiable limit on freedom of expression under section 2(b) of the Charter . It is not enforceable . Section 300 was upheld in the same decision because the knowledge-of-falsity requirement is a meaningful safeguard.
Section 302 — Extortion by Libel
Section 302 makes it an offence to publish or threaten to publish defamatory libel with intent to extort money or secure an appointment or office. Maximum penalty: up to 5 years on indictment.
| Aspect | Civil Defamation | Criminal Defamation |
|---|---|---|
| Purpose | Compensation & reputation repair | Punishment & deterrence |
| Prosecuted by | Private individual | Crown |
| Burden of proof | Balance of probabilities | Beyond a reasonable doubt |
| Penalties | Damages, injunctions | Fines, imprisonment |
| Frequency | Common | Rare |
| Intent required | Not always | Yes (especially s. 300) |
Although libel and slander are most often addressed through civil lawsuits, the table above shows how criminal defamation differs in purpose, proof standard, and consequences.
Criminal defamation is typically considered when:
Courts are cautious due to Charter concerns, but the offence remains available in extreme cases.
Canadian courts have treated criminal defamation cautiously because of freedom-of-expression concerns. The leading Supreme Court decision below still frames when the offence can survive Charter scrutiny.
The Supreme Court of Canada upheld the constitutionality of section 300 , emphasizing:
The Court struck down section 301 as violating section 2(b) of the Charter. The tension between freedom of expression and reputational protection remains, but criminal defamation can be justified in limited cases involving knowing falsehoods.
While prosecutions are rare, Canadian courts have seen criminal defamation charges in cases involving:
Where false allegations involve sexual misconduct, the criminal and civil paths can overlap with other offences — see false sexual assault allegations in Canada for how unfounded complaints differ from proven false reporting.
The rise of social media has renewed attention on criminal defamation. Online publication satisfies the Criminal Code's publication requirement, and digital permanence can aggravate harm.
Posts made "in anger" or "to expose someone" can cross into criminal territory if knowingly false .
Freedom of expression is protected under section 2(b) of the Charter , but it is not absolute.
Canadian courts consistently hold that:
While libel and slander are overwhelmingly treated as civil matters in Canada, criminal liability is still legally possible in narrow and serious circumstances. The Criminal Code reserves imprisonment for cases involving knowingly false statements, deliberate malice, and significant reputational harm.
The offence most likely to result in jail time is criminal defamatory libel under section 300 , which applies when a person publishes defamatory material knowing it to be false . This knowledge requirement is critical: it ensures that criminal sanctions are not applied to mistakes, misunderstandings, or good-faith expressions of opinion.
| Offence | Maximum Penalty |
|---|---|
| Criminal defamatory libel (s. 300) | Up to 5 years imprisonment |
| Extortion by libel (s. 302) | Up to 5 years imprisonment |
In practice, courts apply these provisions cautiously due to concerns about freedom of expression. Most defamation cases never approach the criminal threshold. However, where allegations involve fabricated crimes, repeated harassment, or targeted campaigns intended to destroy a person's reputation, the risk of criminal prosecution becomes real.
Defamation disputes often begin as private disagreements or civil claims, but they can escalate quickly, particularly when allegations involve criminal conduct, sexual misconduct, or professional wrongdoing. At the point where police involvement is suggested, or when a complainant threatens criminal action, the legal landscape changes fundamentally.
Statements made in emails, social media posts, demand letters, or even settlement discussions can later be scrutinized in a criminal context. Attempting to "explain" or "clarify" statements without legal guidance may inadvertently strengthen the case against you.
For this reason, it is critical not to assume that a defamation allegation is "only civil," especially if law enforcement becomes involved or if the allegations are framed as knowingly false.
"When defamation allegations intersect with criminal law, early legal advice is essential. What appears to be a reputational dispute can escalate quickly."
— Robbie Tsang, Criminal Defence Lawyer & Managing Partner
Criminal defamation sits at the intersection of civil liability and criminal prosecution. Information from civil litigation — pleadings, affidavits, emails — may later be used by the Crown. Defence counsel helps manage parallel exposure, protect Charter rights, and prevent unnecessary escalation.
"When defamation allegations intersect with criminal law, early legal advice is essential. What appears to be a reputational dispute can escalate quickly."
— Robbie Tsang, Criminal Defence Lawyer & Managing Partner
"Criminal defamation is rare, but when pursued, it is serious. The consequences extend far beyond damages."
— Jeff Mass, Criminal Defence Lawyer & Founding Partner
The Greater Toronto Area criminal defence lawyers at Mass Tsang provide strategic representation in complex defamation matters, including cases involving criminal exposure.
If you are facing allegations that may result in criminal charges, early legal intervention is critical.
Contact Mass Tsang today for a confidential consultation.
Generally, no. Libel and slander are usually civil defamation matters. However, the Criminal Code still recognizes criminal defamatory libel in limited and serious circumstances — especially s. 300 (knowingly false publication).
Civil defamation focuses on compensation and reputation repair, while criminal defamation involves punishment and requires proof beyond a reasonable doubt, including intent and, for s. 300, knowledge of falsity.
Yes, but only in rare cases. Publishing defamatory libel while knowing it is false can result in criminal charges and up to 5 years' imprisonment under s. 300.
Criminal defamation is governed by sections 298 to 300 and 302 of the Criminal Code. Section 301 is unconstitutional and unenforceable ( Lucas ).
No. Online posts, emails, and social media content qualify as "publication" and can satisfy the elements of criminal defamatory libel.
Freedom of expression under the Charter is protected, but knowingly false statements that cause serious reputational harm are not fully protected. Lucas struck s. 301 partly for this reason.
You should seek legal advice immediately if police involvement is suggested, criminal charges are threatened, or allegations go beyond a civil lawsuit.
