TimPaq Refund Services was created to help inform Canadians about the disability tax credit and assist them in applying for it. To be considered, you must have a physical or mental impairment that lasted, or be expected to last for at least 12 months. Doctors, optometrists, audiologists, occupational therapists, psychiatrists, speech language pathologists, and other medical professionals can sign the required forms. There is also an additional supplement for people under the age of 18.more...See more text