My company carry out a service for the customer who is invoiced and the client therefore pays that invoice. The stock sits with myself of which they pay storage for and have asked me to sell the stock @ 10% commission on sales.
If i therefore sell some of the stock, eg 10 items @ £30 / each, i invoice the purchaser for this who in turn pays the invoice.
However, the storage from the client is less each month than the sales. I have now collected the money for the 10 items @ £30/each but must pay the client the 10 items @ £27 for me to retain the commission of £3/each for the 10 items.
Raise a purchase invoice from the client as if i have purchased the items at £27 / each ?
Do i need to ask the client to send me an invoice each time or per month, even though this seems long winded or how am i best to do this please and also show it ?
Someone told me about self billing but is this scenario where i need to do this, how do i set it up and also account for it please ?
What is the fastest and easiest way to do this please ?