Ontario car accident claims can involve two different legal tests that are easy to confuse. A catastrophic impairment designation affects the accident benefits available through the auto insurance system. The threshold test determines whether an injured person can recover damages for pain and suffering in an Ontario motor vehicle lawsuit.
The two tests serve different purposes and use different criteria. Meeting one does not automatically mean you meet the other. This guide explains how each test works, what evidence matters, and how each can affect an Ontario car accident claim.
Every case depends on its facts, so this guide provides general information rather than legal advice about a particular claim.
How the Ontario personal injury threshold test works after a car accident
Ontario’s threshold test limits when an injured person can recover damages for pain, suffering and loss of enjoyment of life after a motor vehicle accident.
Under section 267.5(5) of the Insurance Act, the injured person must have died or suffered a permanent serious disfigurement or a permanent serious impairment of an important physical, mental or psychological function.
That legal wording is technical, but the basic question is more straightforward: has the injury caused a serious and lasting change in the person’s life?
Courts look at how the injury affects things such as work, career training, personal care and normal daily activities. They also consider whether the affected function is important to that particular person and whether medical evidence shows that the impairment is expected to continue without substantial improvement.
An injury that improves substantially within a few months will generally have difficulty meeting the permanence requirement. A longer-lasting injury may qualify even if it is not obvious on an X-ray or scan, depending on its effect on the person’s life and the supporting medical evidence.
Our guide to permanent serious impairment and the threshold test looks at how Ontario courts apply these requirements in more detail.
The 2026 Ontario car accident deductible
Meeting the threshold does not necessarily mean you receive the full amount assessed for pain and suffering. Ontario also applies a statutory deductible to many motor vehicle awards.
For 2026, the deductible is $47,913.01 when pain and suffering damages are below $159,708.71. Once the award reaches that amount, the deductible no longer applies.
For example, if pain and suffering damages are assessed at $120,000, the 2026 deductible would reduce that amount to $72,086.99. These figures are indexed each year, so the deductible and the point at which it no longer applies can change.
Certain claims by family members under the Family Law Act have a separate 2026 deductible of $23,956.52, which does not apply once the relevant award reaches $79,853.70.
For a broader explanation of how the threshold, deductible, accident benefits and other rules fit together, see our guide to personal injury rights in Ontario.
Who decides whether the threshold is met?
In an Ontario motor vehicle lawsuit, the threshold is decided by a judge, not a jury. In some cases, the issue can be decided before trial. Otherwise, the trial judge determines whether the injury meets the threshold. Even where a jury assesses damages, the judge still makes the separate threshold decision.
Proving the threshold requires more than showing that an injury exists. Ontario Regulation 461/96 requires evidence from one or more physicians who are trained and experienced in assessing or treating the type of impairment involved. The medical evidence must address the nature and permanence of the impairment, the function that has been affected, why that function is important to the injured person, and whether the impairment resulted from the motor vehicle accident.
There must also be evidence confirming how the person’s function has changed. Depending on the case, that could include evidence about difficulties at work, accommodations that are now required, changes in household responsibilities, or activities the person can no longer perform as they did before the accident.
Because the threshold can determine whether pain and suffering damages are available in a car accident claim, medical records and evidence of day-to-day limitations can become important parts of the case.
What counts as a catastrophic impairment under Ontario’s SABS
A catastrophic impairment is the most serious injury classification under Ontario’s accident benefits system. It can apply to severe spinal cord injuries, major loss of mobility or vision, serious brain injuries, and some combinations of physical and psychological impairments.
- Paraplegia or tetraplegia that meets the required neurological and functional criteria.
- Severe loss of mobility or use of an arm, or certain leg amputations.
- Severe loss of vision in both eyes.
- Traumatic brain injury in an adult that meets the required imaging and functional-outcome criteria.
- Traumatic brain injury in a child under 18 that meets the applicable imaging, hospitalization or functional criteria.
- Physical impairments amounting to at least 55% whole-person impairment under the applicable AMA Guides.
- Combined physical and mental or behavioural impairments that reach at least 55% whole-person impairment.
- Severe mental or behavioural impairment, including marked impairment in three or more areas of function or extreme impairment in at least one.
A catastrophic impairment application is usually made using the OCF-19 form and supported by medical assessments. The insurer can also require its own examination before making a decision.
The designation matters because it can significantly increase the accident benefits available for treatment and care. Standard medical, rehabilitation and attendant care benefits are generally limited to $65,000 for a non-catastrophic impairment. A catastrophic impairment increases the standard limit to $1 million.
Our catastrophic injury claim evidence checklist explains the records and assessments that may be needed to support an application.
Threshold test versus catastrophic impairment designation
The threshold test and catastrophic impairment designation can apply to the same car accident, but they answer different questions.
| Question | Threshold test | Catastrophic impairment designation |
|---|---|---|
| What does it decide? | Whether certain pain and suffering and health care damages can be recovered in a motor vehicle lawsuit | The level of medical, rehabilitation and attendant care benefits available through the accident benefits system |
| Source of law | Insurance Act, s. 267.5(3) and (5); O. Reg. 461/96 | Statutory Accident Benefits Schedule, O. Reg. 34/10 |
| Who decides? | A judge | The insurer initially; accident benefit disputes can be taken to the Licence Appeal Tribunal |
| What happens if you meet the test? | Qualifying damages can be pursued, although the statutory deductible may reduce a pain and suffering award | The standard medical, rehabilitation and attendant care limit increases from $65,000 to $1 million, and the usual time limit does not apply |
| What happens if you do not? | Threshold-limited pain and suffering and health care damages are not recoverable from a protected defendant; other financial claims may still continue | Non-catastrophic benefit limits continue to apply; any separate lawsuit is unaffected by the CAT decision |
How catastrophic impairment and the threshold test interact
A catastrophic impairment designation does not automatically prove that the Ontario threshold test has been met. The two tests are separate, and each must be supported by the evidence required for that claim.
In a serious injury case, however, some of the same medical and functional evidence may be relevant to both. Records showing a lasting spinal cord injury, serious brain injury or major loss of function may support a catastrophic impairment application while also helping show that the injury has caused a permanent and serious change in the person’s life.
The two claims also affect compensation differently. Accident benefits can pay for treatment, rehabilitation and attendant care, while a lawsuit may seek compensation for pain and suffering, income loss, future care and other losses. Ontario law prevents a person from being paid twice for the same financial loss, so certain accident benefits received or available can reduce corresponding damages in the lawsuit. Pain and suffering damages are not reduced by accident benefits.
For very serious injuries, future care and loss of earning capacity can be substantial parts of the claim. Our article on the cap on pain and suffering damages in catastrophic claims explains how non-pecuniary damages are treated, while our guide to family caregiver compensation in Ontario injury claims looks at compensation issues that may affect family members.
Frequently Asked Questions
What is the verbal threshold in Ontario car accident cases?
The “verbal threshold” is a common name for the test an injured person must meet to recover pain and suffering damages from a protected defendant after an Ontario motor vehicle accident. The injury must involve death, permanent serious disfigurement, or permanent serious impairment of an important physical, mental or psychological function. Related threshold rules also apply to certain health care expenses.
Does the statutory deductible apply to catastrophic injury claims?
A catastrophic impairment designation does not automatically remove the deductible. For 2026, a $47,913.01 deductible applies to pain and suffering awards below $159,708.71. Once the award reaches that amount, the deductible no longer applies. These figures are indexed annually.
Is catastrophic impairment the same as a catastrophic injury?
No. “Catastrophic injury” is a general description of a very serious injury. “Catastrophic impairment” is a specific legal classification under Ontario’s Statutory Accident Benefits Schedule. To receive CAT status, the impairment must meet one of the criteria set out in the SABS.
Who decides whether I have a catastrophic impairment?
The insurer handling your accident benefits claim makes the initial determination after an application for catastrophic impairment is submitted. The application is generally made using the OCF-19 and supported by an assessment from the appropriate medical professional. The insurer may also require its own examination. If CAT status is denied and the dispute cannot be resolved, the injured person can apply to the Licence Appeal Tribunal.
If you or a family member has suffered a serious injury in an Ontario motor vehicle accident, schedule a free consultation with Zayouna Law Firm to discuss the accident benefits claim, the lawsuit and the options that may be available.
