If using the CD/download version. you can switch to the forms mode and select the 1040 Worksheet.
Line 4 has a "Explain" button where you can enter an explanation of the line 4b amount that will be part of your tax return on a separate page.
You cannot attach anything though.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
