Sales invoice margin discount as per customer

Is there a way to automatically set the sales invoice supply price as per customer?

e.g. if we supply to store 1 at 25% margin. If a product is Rs 100 MRP it should fill Rs 75 in Rate column

if we supply to store 2 at 20% margin. If a product is Rs 100 MRP it should fill Rs 80 in Rate column

without having to manually calculate and fill in each time we create an invoice