Using the S4Supp Worksheet in ProFile

Note: This article includes screenshots of the S4 and S4Supp sections for non-capital losses.

If you need to use the S4 for non-capital and capital loss carryback in ProFile. It works with the S4Supp form to calculate loss carryback.

To get the most out of the S4 and S4Supp forms, first know the type of loss carryback that applies to the return. This includes losses that aren't capital, capital losses, farm losses, or limited farm losses. 

Once you've chosen your loss carryback type, enter the S4Supp form and fill in the info. 

Complete the relevant section in the S4Supp worksheet, followed by the matching section in the S4.