I extrapolated this from the link:
If they’re (YOU) reporting on the net, and you (client) earned $100,000, and they (YOU) took their 15% commission, they will give you (client) a 1099 for $85,000. You would then report the $85,000 on your tax return and would not take a tax deduction on commissions paid to your agent because they’ve already done that for you on the 1099.
Overall, it’s a good idea to ask your agent to provide detailed support for the 1099 they sent you. This will tell you the commissions they (YOU) took and how the 1099 was reported.
While this is not an IRS publication, it seems like a logical way to report, especially since the funds are paid to you and you turn around and pay your clients.
