Cancer may qualify for the Disability Tax Credit in Canada when the illness, treatment or lasting complications cause severe and prolonged restrictions in everyday functioning.
A cancer diagnosis alone does not qualify someone for the credit. The Canada Revenue Agency considers how the condition affects activities such as walking, feeding, dressing, mental functions and other eligible areas.
The Disability Tax Credit does not use the same test as disability insurance. A person may work and qualify for the DTC, while someone who can’t work may not meet the credit’s specific criteria.
For a broader explanation of the program, read our Disability Tax Credit guide.
On This Page:
- Does Cancer Qualify?
- How Cancer May Qualify
- Cancer Treatment and Therapy
- How to Apply
- Why Applications Are Denied
- Frequently Asked Questions
Does Cancer Qualify for the Disability Tax Credit?
Cancer can qualify for the Disability Tax Credit, but approval is not automatic.
Eligibility may arise when cancer or its treatment causes:
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A marked restriction in one eligible activity
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Significant limitations in two or more eligible activities that create an equivalent cumulative effect
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A qualifying need for life-sustaining therapy
A marked restriction generally means that you are unable to complete an eligible activity—or take at least three times longer than someone of a similar age without the impairment—even with appropriate treatment, medication and devices.
The restriction must generally:
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Be present all or almost all of the time, usually at least 90%
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Have lasted or be expected to last for at least 12 continuous months
Does Cancer Have to Be Terminal?
No. Cancer does not have to be terminal or advanced to qualify.
Eligibility depends on the severity, duration and functional effects of the condition or treatment—not life expectancy alone.
Can You Qualify While in Remission?
Potentially. Remission does not necessarily mean that fatigue, pain, neuropathy, cognitive problems or other treatment effects have resolved.
The continuing limitations must still meet the DTC criteria.
How Can Cancer Meet the Disability Tax Credit Criteria?
Cancer may affect several activities recognized under the DTC.
Walking
Cancer, surgery, weakness, severe fatigue, neuropathy or treatment complications may substantially restrict walking.
The CRA considers your ability to walk on level ground using appropriate medication, therapy and devices. General difficulty, pain or reduced endurance may not be enough unless the marked-restriction test is met.
Feeding and Dressing
Severe weakness, pain, loss of mobility or nerve damage may affect the ability to prepare food for yourself, eat, dress or undress.
The application should explain the assistance required, how long the activity takes and whether the limitation exists almost all of the time.
Mental Functions Necessary for Everyday Life
Cancer and its treatment may affect memory, concentration, judgment, problem-solving and the ability to begin or complete necessary everyday tasks.
Occasional forgetfulness or difficulty concentrating will usually not meet the test. The limitation must be severe, prolonged and affect everyday functioning.
Eliminating and Other Eligible Activities
Cancer or surgery may cause serious bowel or bladder limitations. Vision, hearing or speaking may also be affected in some cases.
The appropriate DTC category depends on the specific impairment and its functional effect.
Cumulative Effect of Significant Limitations
You may qualify when significant limitations in two or more eligible categories exist together and create an effect equivalent to one marked restriction.
For example, cancer may cause significant—but not marked—limitations involving walking and mental functions. The combined effect must still meet the CRA’s frequency, severity and duration requirements.
Does Cancer Treatment Count as Life-Sustaining Therapy?
Some cancer treatment may be life-sustaining, but it must meet the CRA’s specific frequency, time and duration requirements.
The therapy must generally:
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Support a vital function
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Be required at least twice per week
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Take an average of at least 14 hours per week
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Be required for at least 12 continuous months
Does Chemotherapy Automatically Qualify?
No. Chemotherapy does not automatically meet the life-sustaining-therapy test.
The treatment schedule, qualifying time spent receiving or managing the therapy and expected duration must satisfy the CRA’s criteria.
A treatment may be medically essential but still fail the DTC frequency or 14-hour requirements.
What Time Can Be Counted?
Time directly related to receiving qualifying therapy, adjusting medication or maintaining necessary therapy equipment may count in appropriate cases.
Time generally excluded includes:
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Travelling to receive treatment
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Obtaining medication
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Medical appointments that do not involve receiving therapy or determining a dosage
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General recovery time after treatment, unless it otherwise qualifies under the CRA rules
How Do You Apply for the Cancer Disability Tax Credit?
You apply using the Disability Tax Credit Certificate, also known as Form T2201.
1. Complete Part A
The person with cancer or their legal representative completes Part A. It includes personal information and details about any supporting family member who may claim an unused portion of the credit.
2. Have a Medical Practitioner Complete Part B
The medical practitioner who can certify the form depends on the category of impairment.
A medical doctor or nurse practitioner can certify all categories. Certain other practitioners may certify limitations within their professional areas.
The practitioner should explain:
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Which everyday activities are restricted
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How long the limitations have existed
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How frequently the restrictions occur
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The assistance, therapy or devices required
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The limitations that remain despite appropriate treatment
3. Submit the Application to the CRA
The form may be completed digitally or submitted by mail. The CRA reviews the medical information and determines whether the criteria are met.
Read our complete guide to applying for the Disability Tax Credit.
Use Specific Everyday Examples
The application should not rely solely on statements such as “severe fatigue,” “chemo brain” or “limited mobility.”
It should describe:
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Which necessary activities you can’t complete independently
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How much longer ordinary activities take
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What help, prompting or supervision you need
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Whether the limitations exist at least 90% of the time
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Whether the limitations are expected to last at least 12 months
Why Are Cancer Disability Tax Credit Applications Denied?
A cancer DTC application may be denied when the information provided does not establish a severe and prolonged restriction under the CRA’s rules.
Common problems include:
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The form focuses on the cancer diagnosis instead of functional limitations
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The impairment is not expected to last at least 12 continuous months
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The limitation is not present at least 90% of the time
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Fatigue or cognitive symptoms are described without explaining their effect on eligible activities
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Chemotherapy does not meet the life-sustaining-therapy time or frequency test
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The application includes travel, general appointments or recovery time that the CRA does not count toward therapy hours
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The combined limitations do not involve at least two eligible categories
The CRA Says Cancer Is Temporary
The DTC generally requires an impairment lasting or expected to last for a continuous period of at least 12 months.
Updated medical evidence may be needed when treatment effects or complications are expected to continue beyond the initial cancer-treatment period.
The CRA Says the Restrictions Are Not Severe Enough
Difficulty completing an activity may not satisfy the marked-restriction test.
The evidence should explain whether the activity is impossible, takes at least three times longer or requires substantial assistance almost all of the time.
What Can You Do After a Denial?
Review the notice of determination and compare the denial reasons with your copy of Form T2201 and the CRA’s eligibility criteria.
You may request a review with new medical information or pursue a formal objection where appropriate.
If approval is granted for earlier tax years, learn more about a potential Disability Tax Credit refund.
Frequently Asked Questions About Cancer and the Disability Tax Credit
Does cancer automatically qualify for the Disability Tax Credit?
No. Eligibility depends on the functional effects of cancer or its treatment—not the diagnosis alone.
Does chemotherapy qualify as life-sustaining therapy?
It may be life-sustaining, but it must also meet the CRA’s frequency, time and duration requirements. Many chemotherapy schedules will not automatically satisfy this test.
Can you qualify while cancer is in remission?
Potentially. Lasting treatment effects may qualify when they continue to meet the DTC’s severity, frequency and duration criteria.
Can cancer-related fatigue qualify?
Potentially. Fatigue must cause a qualifying restriction in an eligible activity. Fatigue alone is not a separate DTC category.
Do you have to stop working to qualify?
No. The DTC focuses on everyday functioning rather than whether you are employed.
Has Cancer Prevented You From Working?
The Disability Tax Credit does not replace employment income. If cancer prevents you from working, you may also qualify for short-term or long-term disability benefits.
Read our guide to cancer disability benefits in Canada.
If an insurance company has denied or terminated your claim, a cancer disability lawyer at Samfiru Tumarkin LLP can review your policy, medical evidence and denial letter.
Contact us for a free consultation if your short-term or long-term disability claim has been denied or cut off.