Medical Conditions That Qualify for the DTC in Canada
Which medical conditions can qualify for the DTC in Canada?
See how medical conditions map to DTC eligibility in Canada, with daily-function examples, the type 1 diabetes exception and current application rules.
Medical conditions such as autism, multiple sclerosis, severe depression, arthritis and Crohn's disease may support a Disability Tax Credit application, but the diagnosis generally does not decide eligibility. The CRA assesses the effects on specified everyday functions, their severity and duration. Type 1 diabetes has an important special rule for 2021 and later years.
Use the condition-to-function table below to identify what to discuss with your practitioner. It is not an approved-diagnosis list, a screening test or a prediction of the CRA's decision. A condition that is not named here can still be relevant.
Federal guidance checked September 23, 2026. Examples are educational and are not individual medical or tax advice. A practitioner certifies the medical information; the CRA decides the application.
Which medical conditions can qualify for the DTC in Canada?
The useful question is not only “Is my condition on a list?” It is “Which activity is restricted, what happens even with appropriate treatment or devices, and how often?” The CRA's eligibility guidance covers severe and prolonged impairments, the cumulative effect of significant limitations and life-sustaining therapy.
The following mapping is an original guide to the questions an applicant can discuss. It does not say that every person with a listed condition meets the threshold, or that a particular diagnosis belongs exclusively to one category.
| Condition or impairment example | Possible CRA category to discuss | Describe the effect, not just the diagnosis |
|---|---|---|
| Autism, ADHD or an intellectual disability | Mental functions necessary for everyday life | Help needed with everyday tasks, judgment, understanding or regulation, compared with someone of similar age |
| Severe depression, bipolar disorder, schizophrenia, PTSD or anxiety | Mental functions necessary for everyday life | Persistent restrictions in functions such as memory, adaptive functioning, perception of reality or problem-solving |
| Multiple sclerosis, Parkinson's disease, stroke effects or cerebral palsy | Walking, dressing, feeding, speaking or cumulative effects | Which activities are restricted, time required and assistance needed despite treatment |
| Arthritis, chronic pain or fibromyalgia | Walking, dressing, feeding or cumulative effects | What happens during ordinary movement or self-care, how often and for how long |
| Crohn's disease or another impairment affecting bowel or bladder function | Eliminating | Practical restrictions in managing bowel or bladder functions, not the diagnosis alone |
| Significant hearing, vision or speech impairment | Hearing, vision or speaking | The category-specific criteria and effects with appropriate aids |
| Kidney failure requiring dialysis or another qualifying therapy | Life-sustaining therapy | Whether the therapy supports a vital function and meets the applicable requirements |
| Type 1 diabetes | Special life-sustaining-therapy rule | For 2021 onward, practitioners do not need to document weekly therapy details |
An inability to work is not itself a DTC category. Conversely, working does not automatically disqualify someone. The application concerns the prescribed everyday functions, not whether an employer considers someone disabled or whether an insurer approved a claim.
For a fuller explanation of the thresholds rather than condition examples, see our DTC eligibility criteria guide. The distinction helps keep this page useful as a condition-to-function reference rather than repeating the entire application guide.
What makes an impairment severe and prolonged?
For many activity categories, the CRA's marked-restriction test asks whether the person cannot perform the activity or takes an inordinate amount of time, generally three times longer than someone of similar age without the impairment. This must be true all or substantially all of the time, generally 90% or more, even with appropriate therapy, medication and devices.
“Prolonged” is a separate requirement: the impairment must have lasted, or be expected to last, for a continuous period of at least 12 months. A serious diagnosis with a short recovery period is not the same as a prolonged qualifying restriction. Nor does having a condition for many years automatically establish the required severity.
| Eligibility pathway | What needs to be established | Common misunderstanding |
|---|---|---|
| Marked restriction in an activity | The relevant category's severe-and-prolonged criteria | A diagnosis or an inability to work proves the whole test |
| Cumulative effect of significant limitations | Two or more category limitations whose combined effect is equivalent to a marked restriction | Two diagnoses automatically count as two qualifying categories |
| Vision | The CRA's specific vision criteria | Every degree of impaired vision is treated as blindness |
| Life-sustaining therapy | A qualifying vital-function therapy under its own rules | All time spent managing any illness counts as therapy time |
Use the CRA's actual category guidance rather than applying one numerical test indiscriminately. Vision and life-sustaining therapy have their own criteria. Within the mental-functions category, attention and memory are different functions, not automatically two separate DTC categories for the cumulative-effects route.
When symptoms fluctuate, describe the frequency honestly, including the effect of treatment and assistance. A diary of typical routines can help a practitioner understand the pattern, but a few difficult days or a diary by itself does not establish the CRA threshold. Do not choose only the worst day and present it as every day.
Can mental health conditions, autism or ADHD qualify?
Yes, their effects can qualify. The CRA's mental-functions criteria include adaptive functioning, attention, concentration, goal-setting, judgment, memory, perception of reality, problem-solving, regulation of behaviour and emotions, and verbal or non-verbal comprehension.
A useful description connects a limitation to an ordinary task. For example, explain the assistance actually needed to follow basic instructions or complete necessary self-care, how much longer the task takes and how consistently the problem occurs. Do not infer eligibility from a diagnostic label, a medication prescription or a school accommodation alone.
For a child, the comparison is with a child of similar age without the impairment. Support that is ordinary for that age and support required because of an impairment are not interchangeable. The practitioner must assess the child's actual restrictions rather than rely on a general description of the diagnosis.
Does diabetes automatically qualify for the DTC?
Type 1 diabetes is a specific exception to an overly broad “diagnosis never matters” rule. The CRA states that people with type 1 diabetes meet the life-sustaining-therapy eligibility criteria. Practitioners no longer have to provide details of therapy for 2021 and later years. An application and CRA review are still required.
Do not extend that rule to every person with type 2 diabetes or every insulin user. Other applicants relying on life-sustaining therapy must meet the applicable requirements. Under current CRA guidance, the therapy must support a vital function, be needed at least twice weekly and average at least 14 hours per week, taking time away from normal everyday activities. The impairment must also meet the prolonged requirement.
Only eligible therapy activities count toward the time calculation. Read the CRA's examples with the practitioner instead of adding every appointment, shopping trip or general health-management task. For years before 2021, check the rules for those years rather than retroactively assuming the newer type 1 diabetes treatment applies.
Is the government introducing a list of qualifying conditions?
The Spring Economic Update 2026 proposed simpler certification for specified long-lasting medical conditions. Finance described a process in which a practitioner would certify a listed condition without completing the usual detailed functional-effects certification. It also explicitly said the underlying DTC disability criteria would not change.
This proposal must not be confused with an existing diagnosis-only entitlement. Draft legislation was released for consultation in July 2026. At our September 23 source check, we could not confirm a later enactment or operational CRA shortcut. Follow the current CRA application instructions, rather than treating a proposed effective tax year as proof that a new route is available.
What should you prepare for a medical practitioner?
Prepare a short, accurate account of the affected routines. Include when the impairment began, treatments and devices used, help needed, time required and the frequency of restrictions. Bring relevant records, but let the practitioner decide what they can certify. The goal is a description of the real situation, not language chosen to manufacture eligibility.
| Bring or describe | Why it helps the discussion |
|---|---|
| One or two concrete daily activities | Connects the impairment to a CRA category |
| Time and assistance required | Distinguishes the diagnosis from its practical effect |
| Typical frequency, including better days | Helps assess whether restrictions meet the frequency test |
| Treatments, medication and devices | Shows the remaining limitations with appropriate support |
| Onset and expected duration | Supports the prolonged requirement and possible eligible years |
| Relevant clinical or functional records | Gives the certifying practitioner context to evaluate |
Not every practitioner may certify every category. The CRA application page lists who can certify each impairment. Check that list before arranging an appointment specifically to complete Part B of Form T2201.
The submission rules have changed. Since July 14, 2026, submit a new application through the digital DTC application or by mail, not the general “submit documents” section unless the CRA requests more information. Since September 8, 2026, T2201 versions from before 2023 are no longer accepted. Use the current form and submit Part A and Part B through the same method.
What does approval mean for your taxes and an RDSP?
DTC approval establishes eligibility for the years in the CRA's decision; it does not promise a fixed cheque. The credit is non-refundable. It can reduce tax payable, and an unused amount may be transferable to an eligible supporting family member. Our retroactive DTC calculator guide separates the disability amount from the usable tax reduction.
The CRA's 2024 statistics, Table 9 report 1,074,610 claimants benefiting through a tax reduction, compared with 797,820 in calendar 2016. That is approximately 34.7% more, calculated from the published rounded totals. It is not an application approval rate or a count of people with any particular diagnosis: the dataset covers returns assessed or reassessed during each calendar year.
DTC eligibility is also one requirement for a Registered Disability Savings Plan. Other conditions apply, so medical approval and opening a plan remain separate steps. If you want help organizing an application, review REEI's DTC support or start an assessment.
Frequently asked questions about qualifying medical conditions
Is there a list of medical conditions that automatically qualify for the DTC?
CRA guidance generally focuses on functional effects rather than a diagnosis list. Type 1 diabetes has a special rule for 2021 onward. A proposed 2026 certification shortcut should not be treated as an operational entitlement without checking current CRA instructions. Applications still require appropriate medical certification and CRA review.
Can ADHD, autism, depression or anxiety qualify for the DTC?
Yes, when the effects meet the applicable mental-functions criteria. The diagnosis alone generally does not establish eligibility. A practitioner must describe the severity, frequency and duration of restrictions in everyday mental functions, considering appropriate treatment and support. For a child, comparison with someone of similar age is important.
Can arthritis, chronic pain or fibromyalgia qualify for the DTC?
They may qualify when their effects meet a relevant category’s criteria, such as walking, dressing or feeding, or the cumulative-effects test. Describe actual restrictions, time required and help needed despite appropriate treatment. Having a long-standing diagnosis or difficulty working does not by itself establish the prescribed functional threshold.
Does type 1 diabetes require proof of 14 hours of therapy each week?
For 2021 and later years, the CRA says people with type 1 diabetes meet the life-sustaining-therapy criteria and practitioners no longer need to provide therapy details. They still need to apply. Do not extend this rule to every form of diabetes or automatically apply it to earlier years.
Can you qualify for the DTC if you are still working?
Employment does not automatically rule out DTC eligibility, and being unable to work does not automatically establish it. The CRA assesses the effects of the impairment under its prescribed categories and thresholds. Describe the relevant everyday restrictions accurately rather than treating employment status as the eligibility test.
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