The Disability Tax Credit (DTC) is a non-refundable tax credit in Canada for individuals who have a severe and prolonged impairment in physical or mental function. An impairment qualifies as prolonged if it is expected to or has lasted at least 12 months. The DTC is required in order to qualify for the Registered Disability Savings Plan , the working income tax benefit, and the child disability benefit. Families using a Henson trust, the Canada Disability Child Benefit other estate planning methods for children with Disabilities are not excluded from the DTC. While the credit is valuable, many have found qualifying for it challenging.