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Find a Lawyer » Canada Legal Guides » Federal Criminal Law Canada » Section 12 Charter Challenges: Fighting Mandatory Minimum Sentences in Canada

Section 12 Charter Challenges: Fighting Mandatory Minimum Sentences in Canada

1 Jul 2026 5 min read No comments Federal Criminal Law Canada
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Under Section 12 of the Canadian Charter of Rights and Freedoms, mandatory minimum sentences have historically been struck down if found to be “cruel and unusual punishment.” However, under the newly enacted federal Bill C-16 (Protecting Victims Act), which received Royal Assent on June 18, 2026, Parliament restored several previously struck-down mandatory minimums by introducing a statutory “safety valve.” Judges are now granted limited discretion to hand down a prison sentence below the statutory minimum only if applying the floor would result in “grossly disproportionate” punishment for the specific offender.

Facing criminal charges in Canada is a frightening experience, especially when the Criminal Code dictates a mandatory minimum sentence. A mandatory minimum means that if you are convicted, the judge has no choice but to send you to jail for a specific length of time, regardless of your personal background, your level of involvement, or your efforts at rehabilitation. This takes away the judge’s ability to show mercy or hand down a fair, customized sentence.

However, the law is not always set in stone. ⚠ The Canadian Charter of Rights and Freedoms acts as a shield against unfair government laws. Specifically, Section 12 protects everyone in Canada from “cruel and unusual treatment or punishment.” Defence lawyers across the country have successfully argued that forcing a non-violent, first-time offender into a federal penitentiary for years because of a rigid rule violates this fundamental right.

For years, courts frequently struck down mandatory minimums as unconstitutional under Section 12 of the Charter. Most recently, on October 31, 2025, the Supreme Court of Canada in Quebec (Attorney General) v. Senneville, 2025 SCC 33, invalidated the one-year mandatory minimums for possessing and accessing child pornography. In direct response to Senneville, the federal government enacted Bill C-16, the Protecting Victims Act, on June 18, 2026. This landmark legislation restored multiple inoperative mandatory minimums by introducing a statutory “safety valve.” Instead of launching a constitutional challenge to strike a law down entirely, defence teams can now ask a judge to exercise their new legislative discretion under Bill C-16 to impose a sentence below the mandatory minimum if the statutory floor would result in “grossly disproportionate” punishment for that specific offender. However, jail time itself remains mandatory under this framework.

Step-by-Step Process: Navigating a Sentencing Under Bill C-16

Seeking a sentence below the mandatory minimum is a complex legal manoeuvre that happens during the sentencing phase of a criminal trial. If you are convicted of an offence carrying a restored mandatory minimum, here is how your defence team will typically proceed under the new laws.

Step 1: Reviewing the Conviction and the Law

Before proceeding, your criminal defence lawyer must analyze how your charges intersect with the newly enacted Bill C-16 frameworks. They will check if the specific offence carries a restored mandatory minimum and assess how the court’s new statutory discretion applies to your case.

Step 2: Seeking the Statutory Safety Valve

Under the new Bill C-16 framework, you can seek a sentence below the minimum directly through the statutory “safety valve” without necessarily striking down the law itself. 📝 However, if your team seeks to challenge the constitutionality of any remaining mandatory minimums that do not fall under this safety valve, or to challenge the constitutionality of the new regime itself, your lawyer must file a formal “Notice of Constitutional Question” and serve it to the provincial Crown Prosecutor and the federal Attorney General.

Step 3: Arguing Gross Disproportionality

Under Bill C-16, the legal test is highly specific to the offender before the court. To trigger the judicial discretion to sentence below the mandatory minimum, your lawyer must prove that the legislated floor would result in “grossly disproportionate” punishment in your specific circumstances. Although courts historically struck down laws based on “reasonable hypotheticals” (as seen in *Senneville*), Bill C-16’s statutory exception is designed to address individual cases directly at sentencing, preventing the law itself from being completely invalidated.

Step 4: The Judge’s Ruling

After hearing the arguments, the sentencing judge will make a ruling. 🔨 If they agree that the mandatory minimum represents a grossly disproportionate punishment for you, they can exercise their Bill C-16 discretion to sentence you below the statutory floor. However, under the new law, some term of imprisonment remains mandatory; the judge cannot bypass the jail requirement entirely to issue a non-custodial sentence like house arrest (conditional sentence) or probation.

How Much Does it Cost in Canada?

Defending a serious indictable offence and seeking a sentence below the mandatory minimum requires hundreds of hours of legal work. The costs can be substantial.

Expense TypeEstimated Cost (CAD)
Criminal Defence Lawyer Retainer$5,000 to $15,000+ (Initial trial phase)
Charter/Safety Valve Application$3,000 to $8,000 (Research and drafting)
Expert Witness Fees (If required)$2,000 to $5,000
Crown/Court Fees$0 (You do not pay the court to challenge a sentence)

How Long Does the Process Take?

Navigating mandatory minimums under Bill C-16 adds significant time to the criminal justice process. From the date of your arrest to the final sentencing decision, a complex case involving firearms or child sexual offences can easily take 18 to 30 months to resolve.

The actual sentencing hearing, where the safety-valve arguments are debated, usually takes place weeks or even months after you are found guilty. 🕑 The judge will then typically reserve their decision, meaning you may wait an additional 4 to 8 weeks for them to write and release their final ruling on whether the mandatory minimum is grossly disproportionate.

Frequently Asked Questions (FAQ)

What is a “grossly disproportionate” sentence?

In Canadian law, a sentence is not unconstitutional or eligible for a reduction just because it is harsh or severe. To trigger the Bill C-16 safety valve, the punishment must be “grossly disproportionate,” meaning it is so excessive that it outrages standards of decency and is completely incompatible with human dignity.

Can I avoid jail completely if the minimum is found to be grossly disproportionate?

No, not under the new Bill C-16 framework. While the statutory “safety valve” allows a judge to impose a sentence below the mandatory minimum if they find it “grossly disproportionate,” Bill C-16 explicitly requires that the revised sentence still be a term of imprisonment. You cannot receive a completely non-custodial sentence like house arrest (conditional sentence), a suspended sentence, or probation if the offence carries a mandatory minimum.

Does this apply to murder charges?

No. Murder and high treason in Canada carry mandatory life sentences. Bill C-16 explicitly excludes these offences from its judicial discretion “safety valve.” The mandatory life sentences, as well as their associated parole ineligibility periods, remain fully constitutional and cannot be reduced by a sentencing judge under Section 12.

What did Bill C-5 do to mandatory minimums?

While the earlier Bill C-5 repealed mandatory minimum penalties for several drug and firearms offences, the newly enacted Bill C-16 (Protecting Victims Act, June 2026) has restored and reinforced mandatory minimum sentences for serious crimes, particularly child sexual offences, in direct response to the Supreme Court’s ruling in Senneville. However, Bill C-16 protects these laws from being struck down under Section 12 of the Charter by incorporating a narrow statutory exception for cases of gross disproportionality.

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