With Canada's tax filing deadline of April 30th approaching, Ottawa tax accountant Alexander Nour of Nour and Daniels is sharing key tips to help Canadians maximize their returns and avoid common mistakes. CTV's Kimberley Johnson reports that Nour recommends keeping receipts for charitable donations, eligible medical expenses and child care costs, and notes that couples can save money by shifting medical expense credits to the lower-income spouse and donation credits to the higher-income spouse.