Property manager Income back to homeowner

[klopuppyluv]

I am a property manager basically a middle man and collect rents and then distribute them back to the property owners (minus my fee/my income).  I am confused on if I count this as income for my business.  If I do, then where do I count it as an expense.  For example, I collected 15K in rents for a property, and returned all the rents then deducted my income (fee) of $2000 for my services (my actual income).  I will be issuing this property owner a 1099-MSC for them to claim the 15K of income on their taxes, but where do I enter it going back out of my business because it is not my income.  I know I am not the only property manager that does it this way.