For a project I am working on we have some companies sell their products through the system I made. They can sell items online and people can order them online but they have the option to pay for it online or in the store with cash. They will have to pay a small percent commission fee over their revenue. If they have a lot of cash payments but no online payments they have to pay me, if they have only online payments they will get paid by me. Now I have a question regarding invoices to the companies.
What kind of invoice do I have to send to the company if the company has more online payments so they have to get money? And what kind of invoice do I have to send if they have received more cash payments so they have to pay me?
Does someone maybe have an example of these invoices for me?