Tax Question - Regarding Joint Venture

[Ryan Whitcher]

Hi BP!

I just completed my first JV and was payed a small sum from another wholesaler. My question is:

For tax purposes, do we need to record a Bill of Sale-type document for the amount that the other wholesaler paid me - OR - do I just account for this as normal income at the end of the year?

Thanks in advance for the help!

Ryan