The federal Disability Tax Credit is important for all families since eligibility for the DTC is required for access to several other federal benefits. The DTC is a non-refundable tax credit which means that it helps persons with long-term disabilities or their supporting persons reduce the amount of income tax they may have to pay. The criteria state that the person applying must have a severe and prolonged impairment in physical or mental functions. Residents of New Brunswick may also be eligible for a provincial top-up to this tax credit. Individuals may claim the disability amount once they have been approved for the DTC. The first step is to download the T2201 application from the CRA website. Complete the personal information in section A of the form. Next request your physician or psychologist to complete the remaining sections. The professional may charge a fee for their time in completing the form. However, you may be able to claim these fees as medical expenses on line 330 or line 331 of your income tax and benefit return. Mail the completed form to the appropriate Tax Centre.