Invoices vs Statements from Suppliers

A customer may receive an invoice and a statement from a supplier. What is the difference between these two documents? When a seller issues an invoice to a buyer, the invoice is related to a specific sale transaction where goods or services were provided to the buyer. Since the invoice relates to a specific sale transaction, it itemises all of the information the buyer needs to know in order to pay the seller including:
• Invoice number
• Invoice date
• Item price
• Sales tax
• Payment terms and early payment discount terms if they have any
• Item description
• Shipping and handling charges
• Total amount payable
The intent of an invoice is either to collect payment from the buyer or to create evidence of a sale.
When a seller issues a statement, the document itemises all invoices that have not yet been paid by the buyer as well as any partial payments. In this case, the intent is to remind the buyer that they have an obligation to pay the seller. The statement usually provides less detailed information and typically includes:
• Invoice totals
• Statement date
• Invoice numbers 
• Invoice dates
Invoices are issued whenever a sale has been completed so could be issued everyday, whereas statements are usually only issued once a month.