What is a Corporation's Income Tax Return in Canada? In Canada, corporations are subject to income tax. The main objective is to redistribute the profits earned by the companies back to the people. Corporation Tax Return: At the end of each taxation year, a corporation is required to complete and file an income tax return with Revenue Quebec in order to assess their tax liability. This includes all types of income from any source except for unearned income such as dividends. There are also reserve deductions that may be claimed including depreciation on property and losses from a sale of…