Hi, I am getting the following warning upon completing my taxes with Ufile and I'm not sure how or where to fix the problem. Where is Schedule 8, Line 448? Thanks You have CPP contributions on self-employment and other earnings with CPP contributions on employment income. The result of the CPP contributions payable on self-employment and other earnings of Schedule 8 is negative. You may have an overpayment. In this situation, the CRA does not want an amount on line 448 and wants to calculate it for you.