How to e-file 5 year NOL carryback using 1139
I have a 2020 1120C return with a NOL. I filled out the 1139 in 2020 and do not know if I can efile that when I efile the tax return or if I need to print it off and mail it. If I can efile it attached to the return, do I need to attach any PDFs to it?
