Not surprisingly, one of the most common categories for Disability Tax Credit (DTC) cases appealed to the Tax Court of Canada involves individuals suffering from severe mental illness. Although the Canada Revenue Agency (CRA) is very specific about determining whether or not an individual is markedly restricted in his or her mental functions by establishing a mathematical model, defining "all or substantially all of the time" as being at "least 90% of the time," the Tax Court of Canada (TCC) has ruled otherwise in numerous cases.
The claimant in Philip Steele v. The Queen suffered from bipolar disorder and had been hospitalized numerous times. Although Mr. Steele suffered from severe memory problems, the responses by his doctor in a follow-up questionnaire from CRA did not meet the 90% threshold. Nevertheless, Judge Campbell Millar ruled in favour of the claimant since he questioned whether "the medical profession had advanced to the point that the complexities of the brain's receipt, storage and retrieval of data can be identified with such an accuracy that would allow a psychiatrist to proclaim that an individual is unable to remember 25%, 50% or 90% of the time."
Other TCC justices have also acknowledged that the 90% threshold is not a suitable guideline for severe mental illness. In Albertin v. The Queen, Judge Gerald J. Rip noted that Mrs. R.'s "mental problem was not continuous; her erratic behaviour was not constant." He estimated that she was impaired only 50% of the time. However, he said, "she was unpredictable… her decisions were not rational decisions… (Mrs. R.) was exhibiting a course of conduct that was potentially dangerous to her. Her conduct was unpredictable.
"The fact is that her erratic behaviour could be triggered without warning at any time during a lucid period. This, in my view, makes the impairment continuous for the purposes of paragraph 118.4(1)(a) and markedly restricted her ability to perceive, thinks and remember, even during periods of lucidity."
In Bruno Maltais v. The Queen, Judge Alain Tardiff also recognized that individuals living with psychotic illnesses did not exhibit these symptoms continuously. Instead, he ruled that Mrs. M. was eligible for the DTC stating that:
"The vulnerability for a relapse was always present even though the outward signs are not always visible or apparent. Moreover, a person who has such a disability may break down at any time without there being any indications or warning signs."
In Bergeron v. The Queen, another claimant with a psychiatric history was also denied the DTC because he did not meet the narrow and technical interpretation of the legislation by CRA. Judge Lucie Lamarre allowed the appeal because of the risk of a relapse. "It is true," she stated the following in her ruling:
"… at certain times, the Appellant regains a certain psychological balance… He can do odd jobs around the house or even play on the computer. But the evidence is sufficient to say that this balance is fragile and that the possibilities for relapse into a psychotic state are always there. Moreover, in the event of doubt, the courts have agreed to grant the benefit of the doubt to the taxpayer."
The requirement for the DTC for people markedly restricted in mental functions in 1999 was the inability to manage personal affairs and care without supervision. Judge Diane Campbell disagreed. In Buchanan v. The Queen, she concluded that the Appellant's bipolar disorder was severe enough to allow the credit, providing the following explanation:
"Although the Appellant is certainly able to operate adequately in some areas, his impairment permeates his entire existence. The facts support that while engaged in some seemingly rational activity to an outsider, all other thought processes are exploding in an array of erratic, bizarre and potentially harmful activities. However, the Appellants' ability to perceive, think and remember, although not non-existent, is of such a severity that his entire life is affected to such a degree that he is unable to perform the necessary mental tasks required to live and function independently and competently."