Numbers and Numbers and Records and Books _ must be trackable Referring to "invoice #9048," rather than "That invoice I sent you last month, I think on a Tuesday," is much easier to track for both you and your client. Assign numbers to your invoices systematically, consistently and chronologically. Some people number their invoices by year (for example, 2009043 would be the 43rd invoice of 2009). You could also specify a code for the project. For example, ABC06 would be the 6th invoice for the ABC project that you're currently working on. Having an invoice and project numbering system keeps everything in line.
As mentioned for the quotation, the points to be included in the proforma are: 1.Seller's name and address 2.Buyer's name and address 3.Buyer's reference 4.Items quoted 5.Prices of items: per unit and extended totals 6.Weights and dimensions of quoted products 7.Discounts, if applicable 8.Terms of sale (include delivery point) 9.Terms of payment 10.Estimated shipping date 11.Validity date