The T1 General or T1 (entitled Income Tax and Benefit Return) is the form used in Canada by individuals to file their personal income tax return.
After applicable deductions and adjustments, the net income and taxable income are determined, from which the federal tax and the provincial or territorial tax are calculated to give the total payable.
Subtracting total credits, which include the tax withheld, the filer will either receive a refund or have balance owing, which may be zero.
The T1 filing deadline (April 30) is extended to June 15 where the taxpayer or their spouse earned income from a business at any time during the calendar year.
This extension only gives more time for self-employed individuals and their spouses more time to file their returns; any balance owing is still due on April 30 and arrears interest will be charged even if the return is filed before the extended deadline.