Drug Possession Lawyer Toronto | CDSA Defence

Composed by Chris Sewrattan, Certified Specialist in Criminal Law. Updated July 2026.

This is legal information, not legal advice. It does not create a lawyer-client relationship. For advice about your situation, contact us for a consultation.

Simple drug possession is an offence under section 4(1) of the Controlled Drugs and Substances Act. Two things define how these cases actually unfold in Toronto today. First, possession in law requires knowledge and control, which the Crown must prove and often cannot. Second, federal law and prosecution policy now direct police and Crowns to consider alternatives to prosecution for simple possession, so most first-time possession charges resolve without a criminal conviction. Neither point makes the charge trivial: the path to a good outcome still has to be built.

What is drug possession under Canadian law?

The Crown must prove beyond a reasonable doubt:

The substance is a controlled substance under the CDSA schedules, proven through analysis and a certificate of analysis or the analyst's evidence.
Possession: knowledge of the substance and a measure of control over it. Possession can be personal (on the body), constructive (knowledge plus control of drugs kept somewhere else), or joint (shared with others). Mere proximity is not possession: drugs found in a shared apartment, a borrowed car, or a friend's bag are not automatically in everyone's possession.

Cannabis is governed by the Cannabis Act rather than the CDSA, with its own possession limits and offences. Where the Crown alleges the drugs were held for sale rather than use, the charge becomes possession for the purpose of trafficking, a fundamentally different case dealt with alongside drug trafficking.

Penalties for drug possession in Ontario

For Schedule I substances such as cocaine, fentanyl, heroin, and methamphetamine, possession is a hybrid offence with a maximum of 7 years in prison where the Crown proceeds by indictment; summary conviction penalties are modest by comparison. There are no mandatory minimums for possession.

The maximums tell only part of the story. Since 2022, the CDSA has required police and prosecutors to consider warnings, referrals to health and social services, and diversion instead of charges for simple possession, and federal prosecution policy limits possession prosecutions to cases raising public safety concerns. In Toronto, the practical result is that most simple possession matters, particularly for a first-time accused, resolve through diversion, withdrawal, or similar outcomes rather than conviction. Where a case does proceed, discharges and probation remain far more common than jail for possession alone.

Possible defences to a drug possession charge

Depending on the evidence, defences may include:

No knowledge: drugs in shared spaces, vehicles, borrowed clothing, or luggage the accused did not pack. Knowledge must be proven, not presumed from proximity.
No control: presence where drugs are found, without more, is not possession.
Momentary innocent possession: briefly handling drugs to discard or surrender them is not criminal possession.
Charter challenges: most possession cases begin with a stop, a pat-down, or a search of a car or home. Arbitrary detentions and unreasonable searches under sections 8 and 9 lead to applications to exclude the drugs, which usually ends the case.
Proof of the substance: continuity from seizure to analysis and the certificate itself can be challenged.

Frequently asked questions

Will a first drug possession charge give me a criminal record?

Usually not, if handled properly. Most first-time simple possession charges in Toronto resolve through diversion or withdrawal, and where a case proceeds, discharges are common. A conviction is the exception rather than the rule for possession alone.

The drugs were not mine. Can I still be convicted?

Only if the Crown proves you knew about them and had some control over them. Drugs found in shared homes, cars, and bags are contested exactly on those elements.

I was a passenger in a car where drugs were found. Am I in possession?

Not automatically. Being present where drugs are located is not possession without proof of your knowledge and control, and passenger cases frequently fail on that gap.

What are the penalties for possession of cocaine or fentanyl?

Up to 7 years where the Crown proceeds by indictment, with no mandatory minimum. In practice, simple possession rarely results in jail, and most first-time matters resolve without a conviction.

What is drug diversion?

Resolution outside the ordinary prosecution track, ranging from withdrawal after counselling or programming to referrals to health services. Federal law now directs police and Crowns to consider these alternatives for simple possession.

Can a possession charge affect travel to the United States?

It can. American border officials apply their own rules, and even records of a charge or admissions about drug use can create issues at the border. Get specific advice before travelling if you have any drug-related history.

Charged with drug possession? Contact us