Here is a little ditty from IRS.gov:
Include on line 1 all gains and losses from
section 1256 contracts open at the end of
your tax year or closed out during the year. If
you received a Form 1099-B, Proceeds From
Broker and Barter Exchange Transactions, or
equivalent statement, include on line 1 the
amount from box 9 of each form. In column
(a), write âForm 1099-Bâ and the brokerâs
name. List separately each transaction for
which you did not receive a Form 1099-B or
equivalent statement, or received a Form
1099-B that is not for your tax year.
This was taken from this weblink: (page 2)
http://www.irs.gov/pub/irs-pdf/f6781.pdf
Don't know about you guys, but I do not have a box
9 on my IB 1099 futures statement.
I only have line 1,2,3 and 4.
I am pretty sure line 1 or 2 does not include commissions.