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.
If you are using a limited company as your payment structure you will need to raise invoices for the services you provide or goods that you sell, this article explains how to prepare one with an example, the best practices you need to know, double taxes case example, proforma invoice example and in the end I will give you tips about how to find a good invoice example online, I will also include a couple of invoice example free download in Microsoft Word and Excel format for you to use.