Total money made vs total money customer payed me.

First of all I love the app!

But would love to be able to distinguish my “take home” vs how much total money I recived from customers. For example I am a mobile mechanic, and I want to see how much money I earn. But I buy parts for my customers and they pay me, that and it shows up as earnings. Becaue I put the parts in the reimbursements section.

Thank you