We don't want to force our traders into a double taxation situation, or have the give up the benefits of being completely free of paying any self employment (FICA) taxes.....so all of our traders are individuals.
If you want to raise some money to trade with, then just make agreements with those who are helping, don't over-complicate it and pay all those extra fees (accounting and tax wise). For retail traders, there may be some other considerations, and, yes, you should consult your accountant. Perhaps Bob Greene could pop in to help in those cases. Bob?
FWIW
Don