It is important that you have an official purchase order (PO), for any services or goods that you are providing. We also suggest sending a costed delivery note or works order to the named contact on the PO, for confirmation, before the invoice is submitted.
Please see our Invoice Payments Guide, for additional invoicing tips, including:
- Different invoicing methods available
- How to spot revised orders
- Invoices cleared for payment
Our Invoice Payments Guide is also available as a step-by-step Word document - Invoice Payments Guide (Word).