Your taxable income is the amount you use to calculate your federal tax on your Schedule 1 and your provincial or territorial tax on Form 428.
If, at the end of the year, you reside in a province or territory but all or part of your business income for the year was earned and can be allocated to a permanent establishment outside that province or territory, use Form T2203, Provincial and Territorial Taxes for 2011 - Multiple Jurisdictions, to determine the taxes payable on the income attributed to the other province or territory. You must attach a copy of Form T2203 to your income tax return.
If you were a resident of Quebec on December 31, 2011, calculate your provincial tax for Quebec by filing a provincial income tax return for Quebec.
Enter on line 260, the amount from line 236 minus the amount from line 257. Line 257 is the total of all your amounts on lines 248 to 256.