Can I Sue After a Car Accident in Ontario?

Can I Sue After a Car Accident in Ontario?

Yes. You can sue after a car accident in Ontario if another driver or another responsible party caused or contributed to the crash. Ontario’s no-fault accident benefits system does not prevent a lawsuit, but it does affect how the claim works. Many injured people have both an accident benefits claim through insurance and a lawsuit against the at-fault driver.

What Does It Mean to Sue After a Car Accident?

When people ask if they can sue after a car accident, they are usually asking whether they can bring a lawsuit against the at-fault driver for their injuries and losses.

Lawsuits are different from accident benefit claims which are there to assist funding for treatment, rehabilitation, attendant care, income replacement, and other benefits depending on the policy, the injuries, and the accident date. These benefits are often called “no-fault” benefits because an injured person can usually apply before proving who caused the collision.

A lawsuit is the claim against the driver, owner, company, municipality, or other party whose negligence caused the crash. That lawsuit can seek compensation for losses that accident benefits do not fully cover.

When Can You Sue the At-Fault Driver?

You can sue after a car accident in Ontario if someone else’s negligence caused injury or financial loss. That claim can also include a driver who ran a red light, failed to yield, followed too closely, drove while distracted, made an unsafe left turn, entered an intersection without proper care, or lost control because of unsafe driving.

Some cases entail more than a single responsible party. For example in transport truck cases there can be parties such as the driver and the trucking company. A delivery vehicle case can involve an employer. A road maintenance case can involve a municipality. A defective or poorly maintained vehicle can involve an owner, repair shop, or other company.

Can You Sue for Pain and Suffering?

Yes, but Ontario restricts pain and suffering claims after car accidents. For most Ontario car accident lawsuits, the injured person must meet the serious impairment threshold before recovering pain and suffering damages. Ontario’s threshold regulation refers to death, permanent serious disfigurement, or a permanent serious impairment of an important physical, mental, or psychological function.

Statutory deductibles also reduce the pain and suffering award unless the award is high enough to avoid the deductible. This is why the right to sue and the value of the lawsuit are separate questions. A person can have the right to bring a claim, but the threshold, deductible, injury evidence, fault evidence, income loss, treatment needs, and medical prognosis will affect whether the claim has enough value to pursue.

For more detail on that specific issue, see our article on the Ontario car accident deductible for pain and suffering.

Can I Sue If I Was Partly at Fault?

Yes, being partly at fault does not prevent an Ontario car accident lawsuit from being commenced. Fault can be divided between drivers on a percentage base. If the injured person is found partly responsible, the compensation can be reduced by that percentage. For example, someone who is found 25% at fault does not necessarily lose the whole case, but the recovery can be reduced to reflect that share of responsibility.

This is one reason early evidence is important. Photos, police reports, witness names, dash camera footage, vehicle damage, intersection layout, traffic signal information, and medical records can all affect how fault is assessed.

Can I Sue If My Injuries Seemed Minor at First?

Yes. You do not lose the right to sue just because the injuries seemed minor in the first few days. Many car accident injuries become more clear over time. Concussion symptoms, neck pain, back pain, nerve symptoms, dizziness, headaches, sleep disruption, driving anxiety, chronic pain, and work restrictions can develop or worsen after the initial emergency room or walk-in clinic visit.

How Long Do You Have to Sue After a Car Accident in Ontario?

In Ontario car accident cases, the basic deadline to start a lawsuit is two years from when the claim is discovered. Typically that is the crash date, but limitation periods can sometimes become more complex depending on the facts. Ontario’s Limitations Act, 2002 contains the general two-year limitation period.

Do not treat two years as a safe waiting period. Insurance forms, accident benefits deadlines, medical records, witness evidence, repair records, surveillance footage, and possible municipal notice issues can arise much earlier.

For more detail on limitation periods, see our article on how long after an accident you can sue in Ontario.

Do the 2026 Ontario Accident Benefits Changes Affect the Right to Sue?

Ontario accident benefits change on July 1, 2026. FSRA states that medical, rehabilitation, and attendant care benefits remain mandatory, while other accident benefits coverage becomes optional.

The coverage available after a crash will now depend on the policy, the accident date, the renewal status, and the benefits selected. These changes affect the insurance-benefits side of a car accident claim. They do not remove the right to sue an at-fault driver.

When Should You Speak With an Ontario Car Accident Lawyer?

You should speak with an Ontario car accident lawyer if your injuries are not resolving, you are missing work, fault is disputed, an insurer is asking for a statement, benefits have been denied, or you are unsure whether your injuries are serious enough to support a lawsuit.

At Foster Injury Law, we are capable of helping injured people understand both sides of an Ontario car accident claim: accident benefits through insurance and the lawsuit against the at-fault party. When retained, we request and review the client’s medical records so the case is built around the evidence.

If you were injured in a car accident in Ontario and are unsure whether you can sue, contact Foster Injury Law for a free consultation.