Since you mentioned additional tax, did it mention either Schedule 2 or Schedule 4?
Here's what a Schedule 2 looks like:
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/pub/irs-pdf/f1040s2.pdf">https://www.irs.gov/pub/irs-pdf/f1040s2.pdf</a>
Here's what a Schedule 4 looks like:
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/pub/irs-pdf/f1040s4.pdf">https://www.irs.gov/pub/irs-pdf/f1040s4.pdf</a>
Here's how to look at your actual Form 1040 and Schedules 1-6 to see what entries are requiring an upgrade:
With your return open, go to the left menu column and click on TAX TOOLS, then TOOLS.
In the Tools window choose "View Tax Summary."
At the Tax Summary screen go back to the left menu column and click Preview Form 1040.
That will open the Form 1040 Worksheet and the Schedules 1-6.
Scroll down to view the Schedules.
