The short answer
Over 80 means having a blood alcohol concentration of 80 mg or more per 100 mL of blood within two hours after you stopped driving, as set out in s. 320.14(1)(b) of the Criminal Code. People often call this limit 0.08, because it refers to a blood alcohol concentration of 0.08 percent.
The Crown does not need to prove that you were impaired, because the reading itself is the offence. You can feel completely fine and still be charged. That is why over 80 cases usually turn on how the samples were taken and recorded, rather than on how you appeared to the officer. See our impaired driving page for an overview.
Charged with impaired driving?
The two-hour rule
The test is your blood alcohol level within two hours after driving, not at the exact moment you were driving. This rule came in with the 2018 changes to the Criminal Code.
In practice, breath tests at the station often happen an hour or more after the stop. The two-hour window means those readings can still be used, as long as the samples were taken properly and within the time allowed.
The exception for drinking after driving
There is a narrow exception for people who drank after they stopped driving (s. 320.14(5)). It applies only if all of the following are true:
- Drinking after driving: You drank alcohol after you stopped driving.
- No reason to expect a test: You had no reason to expect that police would ask you for a sample.
- Consistent reading: What you drank after driving fits your reading and shows you were under 80 while driving.
The exception usually does not apply after a collision or after contact with police, when a test was likely. For example, someone who parks, goes inside and has drinks at home hours later, with no reason to expect police, may fit. Someone who leaves a crash scene and drinks at home will not.
How breath testing works
At the station, a qualified technician takes two breath samples on an approved instrument. The samples must be taken at least 15 minutes apart, and the instrument runs its own checks before and after each sample. The results are printed on a test record, and the lower of the two readings is usually the one that matters. If any of these steps was not followed, the reliability of the result can be challenged.
Minimum fines
For a first offence, s. 320.19 sets minimum fines based on the reading:
- 80 to 119 mg: The minimum fine is $1,000.
- 120 to 159 mg: The minimum fine is $1,500.
- 160 mg or more: The minimum fine is $2,000.
A first conviction also brings a court driving prohibition of 1 to 3 years and an Ontario licence suspension of at least 1 year. A second or later offence carries minimum jail. See second impaired driving offence.
What happens after you are charged
- Roadside penalties: Ontario imposes a 90-day suspension and a 7-day impoundment right away.
- First court date: Your lawyer can appear and request disclosure.
- Disclosure review: Your lawyer reviews the breath records, the instrument checks and the video.
- Resolution or trial: The case either resolves or goes to trial on the issues raised by the evidence.
Possible defences
Over 80 cases often turn on technical issues:
- The demand: Police may not have had lawful grounds for the roadside or station demands.
- Right to counsel: Police may not have told you of your right to a lawyer, or given you a real chance to use it before the station tests (Charter s. 10(b)).
- Testing procedure: The instrument checks, the time between samples or the operator's steps may not have been done properly.
- The two-hour window: The samples may not have been taken in time.
- Drinking after driving: The exception in s. 320.14(5) may apply.
See impaired driving defences in Ontario.
Over 80 vs impaired driving
These are different charges. Impaired driving (s. 320.14(1)(a)) requires proof that alcohol or drugs impaired your ability to drive, even slightly. Over 80 requires proof of the reading.
Police often lay both charges for the same incident. However, you cannot be convicted of both for the same driving.
Effects beyond the sentence
An over 80 conviction is a criminal record. It can increase insurance costs for years, affect jobs that involve driving, and cause problems at the U.S. border. Because the maximum is 10 years by indictment, it can also make a permanent resident inadmissible for serious criminality.
Common situations
Over 80 charges in Peel Region often follow a holiday checkpoint, a routine traffic stop for speeding, a minor collision in a parking lot or a call from another driver who reported unusual driving. In many of these cases, the person charged felt fine and did not believe they were over the limit. Because the offence depends on the reading rather than on how a person feels, the focus of the defence usually shifts to whether the reading was obtained lawfully and recorded accurately.
Possible outcomes
No conviction
These outcomes end the case without a criminal conviction.WithdrawalThe Crown drops the charge.
Withdrawal: The Crown may withdraw the charge if the breath evidence is excluded or the samples were not taken in time.
AcquittalFound not guilty at trial.
At trial, the court will acquit you if the Crown cannot prove the reading lawfully and reliably.
Conviction
These outcomes follow a finding of guilt and leave a criminal record.ConvictionThe court enters a conviction and imposes sentence.
A conviction brings a minimum fine based on the reading, a driving prohibition and an Ontario suspension.
Depends on the case
These steps can lead to either result.A plea to a lesser offenceA guilty plea to a lesser charge.
Some cases are resolved as careless driving, depending on the evidence and the Crown's position.
What to do now
- Write down exactly what you drank and when, including anything after you stopped driving.
- Keep any receipts that show the times of purchases.
- Do not drive until your suspension has ended and your release papers allow it.
Why the officer's notes matter
Even though impairment does not need to be proven for over 80, the officer's notes still matter. They record the reasons for the roadside demand, the time of driving, the time of each breath sample and when you were told about your right to a lawyer. Any gap or inconsistency between the notes, the video and the instrument printouts can raise questions about whether the samples were lawfully obtained.
How we can help
We can review the breath records, the timeline and the police video, and test every step of the case. Call (647) 223-1980 for a free consultation.
Frequently asked questions
What is the legal limit in Ontario?
The criminal limit is 80 mg. Ontario also has a warn range of 50 to 79 mg, with short roadside suspensions. Drivers 21 and under and novice drivers must have zero alcohol.
Can I be charged with over 80 if I was not drunk?
You can, because the charge is based on the reading, not on how you seemed to the officer.
What if I drank after I got home?
The exception in s. 320.14(5) may apply if you had no reason to expect a police test.
Is over 80 a criminal record?
A conviction for over 80 creates a criminal record.
Can I ask for the breath instrument records?
Your lawyer can request records about the instrument and its maintenance as part of the defence.
Does a reading just over 80 make a difference?
A reading close to 80 still leads to the same charge, but the minimum fine is lower, and small errors in testing can matter more.
More impaired driving guides
7 guides- DUI Charges in Ontario: What Happens Next | Brampton
- Ontario Licence Suspensions After a DUI | Brampton
- Refusing a Breathalyzer in Ontario | Brampton DUI Lawyer
- Drug-Impaired Driving and THC Limits | Brampton Lawyer
- DUI and Impaired Driving Defences in Ontario | Brampton
- Driving While Prohibited in Ontario | Brampton Lawyer
- Second DUI in Ontario: Jail, Suspensions and Interlock



