Thanks for the link. That's helpful.
I can e-file even when I need to include my 1099-B from my broker? I was under the impression that the IRS e-file system couldn't handle attachments. On Form 8949, Turbotax puts "Vanguard See Attached Stmt" in Column A while giving the summary totals for basis, proceeds and gain/loss. So I'll need to include that somehow.
