How Much Jail Time for a DUI in Canada? 

DECK: A first offence does not carry mandatory jail time, but second and third convictions do. Here is how sentencing works under the current law.

If you have been charged with impaired driving, the jail question is probably the first thing on your mind. The short version: a first-time conviction does not come with a mandatory jail sentence, but it does come with a mandatory fine, a criminal record, and a driving prohibition. Second and third offences carry mandatory jail time with no exceptions.

Here is how it breaks down.

What Counts as Impaired Driving in Canada

The charge most people call a “DUI” is officially called Operation While Impaired under Section 320.14 of the Criminal Code. It covers operating any conveyance, including cars, trucks, boats, and e-scooters, while your ability is impaired by alcohol, drugs, or both.

There are three main ways this charge gets laid. The first is impaired driving, where your ability to operate is affected by a substance. The second is “Over 80,” where your blood alcohol concentration hits 80mg or more per 100mL of blood within two hours of driving. The third is drug-impaired driving, where a prohibited level of a drug is found in your blood within the same two-hour window.

All three carry the same penalty structure.

First Offence DUI: What to Expect

A first-time impaired driving conviction does not carry a mandatory jail sentence. Most people convicted of a first offence receive a fine, a driving prohibition of at least one year, and a criminal record.

The mandatory minimum fine depends on your blood alcohol level. A standard first offence starts at $1,000. If your BAC was between 120 and 159 mg, the minimum fine jumps to $1,500. At 160 mg or above, the minimum is $2,000.

On top of the federal criminal penalties, provincial consequences kick in the moment you are charged. In Ontario, a first-time charge triggers an immediate 90-day licence suspension, a 7-day vehicle impoundment, and a monetary penalty. These are administrative and happen before you ever see a courtroom.

Second Offence DUI: Mandatory Jail Time

A second impaired driving conviction carries a mandatory minimum sentence of 30 days in jail.

That is not discretionary. A judge cannot substitute a fine. Thirty days is the floor, and the sentence can go higher depending on the circumstances. The maximum remains 10 years if the Crown proceeds by indictment.

Third Offence DUI: 120 Days Minimum

A third or subsequent conviction carries a mandatory minimum of 120 days in jail.

Same rules apply. The judge must impose at least 120 days and can go well beyond that based on the specifics of the case and your history.

DUI Penalties at a Glance

First Offence: $1,000 to $2,000+ fine (no mandatory jail). Maximum 10 years if prosecuted by indictment.

Second Offence: 30 days jail minimum. Maximum 10 years by indictment.

Third Offence: 120 days jail minimum. Maximum 10 years by indictment.

If impaired driving causes bodily harm, the maximum sentence is 14 years. If it causes death, the maximum is life imprisonment.

Why Legal Representation Matters Early

An impaired driving charge affects your criminal record, your ability to drive, your employment, and your ability to travel internationally. The way your case is handled from the start, including what is said to police, how evidence is challenged, and how the case is positioned before the Crown, all shapes the outcome.

Getting an experienced criminal defence lawyer involved early gives you the strongest position to respond to the charge. There are defences available in impaired driving cases, and the difference between exploring them and missing them comes down to timing.

Contact Pyzer Criminal Lawyers for a free consultation.

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