If you are reporting self employment income the software will automatically calculate CPP on self employment income by generating Schedule 8: http://www.cra-arc.gc.ca/E/pbg/tf/5000-s8/README.html
You need to watch for the following lines numbers used self employment / contractor income:
- Line 222:Deduction for CPP or QPP contributions on self-employment and other earnings-(attach Schedule 8 or Form RC381, whichever applies) - page 2 of the T1 general form
- Line 308: CPP contributions (non refundable credit); schedule 1 form and
- Line 421: CPP contributions payable on self-employment and other earnings (attach Schedule 8 or Form RC381, whichever applies) - page 4 of the T1 general form
