Marking and Invoice as Paid without it affecting the bank balance

RachelAtkins50

I wondered if you could help me find a way to mark invoices as paid without there being an actual income written on the account? The nature of our business means that we invoice our tutors for a commission for their private tuition work. These same tutors also get paid for other assignments direct through us.

We tend to then deduct the payment due from them to us, from the payments that we owe them. I still invoice them for their records but I could do with working out a way to mark them as paid. I hope the above makes sense! Thanks in advance