The RDSP is a registered savings plan introduced by the Government of Canada to help families save for the long-term financial security of persons with severe disabilities who are eligible for the Disability Tax Credit (DTC).‍You qualify for the DTC when you have a marked physical or mental limitation. This means that you have a disability related to your ability to speak, hear, walk, evacuate (bowel or bladder), feed yourself, dress yourself, or mental functions necessary for activities of daily living.