Yes. False arrest is a recognised civil wrong in Canada, and police forces are sued successfully every year. The claims that fail usually fail for one of two reasons: the arrest was lawful even though the charge collapsed, or the claimant missed a deadline.
When is an arrest unlawful?
An arrest is lawful if the officer had reasonable and probable grounds to believe you committed an indictable offence, or found you committing a criminal offence. The test has two parts: the officer must genuinely believe it, and that belief must be objectively reasonable to a neutral observer.
An arrest becomes unlawful where:
- There were no reasonable grounds – a hunch, a stereotype, or an anonymous tip with nothing behind it
- The officer failed to tell you the reason for the arrest, promptly and in plain terms
- You were not informed of your right to counsel, or were denied a reasonable opportunity to use it
- The force used was excessive in the circumstances
- You were detained longer than necessary without being charged or brought before a justice
Being acquitted does not make the arrest unlawful. This is the point most claims founder on. An officer can have perfectly reasonable grounds at 11 p.m. and the Crown can still fail to prove the case at trial a year later. The arrest is judged on what the officer reasonably knew at the time, not on how the prosecution ended.
What you can sue for
False arrest and false imprisonment – being detained without lawful authority. Damages flow from the detention itself, so you do not need to prove financial loss.
Malicious prosecution – a harder claim. You must show the proceeding was started without reasonable grounds, that it ended in your favour, and that the officer acted with malice or an improper purpose. Carelessness is not enough.
Negligent investigation – Canadian courts recognise that police owe a duty of care to a suspect in how an investigation is conducted.
Charter damages – under section 24(1), for breaches of your rights on arrest and detention, notably sections 7, 8, 9 and 10.
Battery – where the force used went beyond what was reasonably necessary.
What compensation is realistic?
Canadian awards are far lower than American ones, and expectations should be set accordingly.
A brief unlawful detention with no injury and no lasting consequence typically produces a modest award – often in the low thousands. Longer detentions, publicised arrests that damaged a reputation or career, physical injury, or conduct the court finds high-handed can push awards substantially higher, and punitive damages are available where police conduct was egregious.
Most claims settle. Very few produce large numbers, and litigation costs are real. A lawyer should tell you early whether a claim is worth running – and sometimes the honest answer is that a formal complaint is a better use of your time than a lawsuit.
The deadlines that end most claims
This is where good claims die.
Ontario’s Limitations Act gives a general two-year limitation period from the date you knew, or ought to have known, you had a claim.
But claims against public authorities frequently attract much shorter notice requirements – sometimes as little as 60 days written notice before you can sue, depending on the defendant and the type of claim. Miss the notice and the two-year period becomes irrelevant.
Get advice within weeks of the arrest, not years. This is the single most common reason people with strong facts have no case.
What to do after an arrest you believe was unlawful
Do not resist. Resisting an unlawful arrest creates new charges, and it will be the new charges you are defending. Comply, then challenge it afterwards.
Say nothing beyond asserting your rights. Ask for a lawyer, then stop talking. Anything you say to justify yourself becomes evidence.
Write everything down immediately – times, badge numbers, cruiser numbers, officer descriptions, exact words used, and who witnessed it. This document will be the backbone of any claim.
Photograph injuries and get medical attention, which creates a dated record.
Preserve video. Security and doorbell footage is routinely overwritten within days or weeks. Ask for it now, in writing.
Deal with the criminal charge first. How the prosecution ends affects the civil claim, and a malicious prosecution claim cannot even begin until the proceeding has concluded in your favour.
Two routes, and they are different
A civil lawsuit seeks money. It is slow, costly, and requires you to prove the arrest was unlawful.
A police complaint – in Ontario, through the Law Enforcement Complaints Agency – seeks discipline against the officer. It is free, faster, and produces no compensation. Serious injury or death is investigated by the Special Investigations Unit.
You can do both. A complaint finding can be useful evidence later, though it does not decide the civil case.
Credit: Bill Oxford Via Unsplash
Frequently asked questions
Can you sue for false arrest in Canada? Yes, and you do not need to show any financial loss – damages flow from the detention itself. What defeats most claims is not the merits but the deadline, so treat the notice period as the first thing to check.
What exactly is a false arrest? An arrest made without lawful authority: no reasonable and probable grounds, no valid warrant, or outside the officer’s power. It is judged on what the officer reasonably knew at the time.
Does being acquitted mean the arrest was unlawful? No, and this is where most claims fail. An officer can have entirely reasonable grounds at the time and the Crown can still fail to prove the case at trial a year later.
Can you personally sue a police officer in Canada? Yes, and claims are usually brought against both the officer and the police services board, which is typically responsible for the officer’s conduct and is the party with the means to pay.
What compensation is realistic for a wrongful arrest? Canadian awards are far lower than American ones. A brief unlawful detention with no injury often produces an award in the low thousands. Longer detentions, publicised arrests that damaged a career, physical injury, or high-handed conduct push awards substantially higher.
What are the steps after a false arrest? Do not resist. Write down times, badge numbers and exact words while it is fresh. Photograph injuries and get medical attention. Preserve video before it is overwritten. Deal with the criminal charge first – how it ends affects the civil claim. Get advice within weeks, not years.
How long do I have to sue? Ontario’s general limitation period is two years, but claims against public authorities frequently carry much shorter notice requirements – sometimes as little as 60 days. Missing the notice ends the claim regardless of the two-year period.
What is the most common complaint against police? Complaints about conduct during arrest and detention – excessive force, incivility, and unlawful searches. In Ontario these go to the Law Enforcement Complaints Agency, which seeks discipline rather than compensation. You can pursue both a complaint and a lawsuit.
Arrested in Toronto?
Deal with the charge first – the outcome shapes everything that follows, including any claim against the police.
Jeffrey I. Reisman has defended criminal charges in Toronto since 2001, including three years as a prosecutor, and regularly challenges arrests and searches under the Charter.
Call 647-351-4357 · Free consultation · Available 24/7
General information about Canadian law as of August 2026. Not legal advice. Limitation periods are strict – get advice promptly.