Credit memo - If the buyer returns the product, the seller usually issues a credit memo for the same or lower amount than the invoice, and then refunds the money to the buyer, or the buyer can apply that credit memo to another invoice. Commercial invoice - a customs declaration form used in international trade that describes the parties involved in the shipping transaction, the goods being transported, and the value of the goods. It is the primary document used by customs, and must meet specific customs requirements, such as the Harmonized System number and the country of manufacture. It is used to calculate tariffs.
Debit memo - When a company fails to pay or short-pays an invoice, it is common practice to issue a debit memo for the balance and any late fees owed. In function debit memos are identical to invoices.
Self-billing invoice - A self billing invoice is when the buyer issues the invoice to himself (e.g. according to the consumption levels he is taking out of a vendor-managed inventory stock).
Evaluated receipt settlement (ERS) - ERS is a process of paying for goods and services from a packing slip rather than from a separate invoice document. The payee uses data in the packing slip to apply the payments. "In an ERS transaction, the supplier ships goods based upon an Advance Shipping Notice (ASN), and the purchaser, upon receipt, confirms the existence of a corresponding purchase order or contract, verifies the identity and quantity of the goods, and then pays the supplier."
Timesheet - Invoices for hourly services such as by lawyers and consultants often pull data from a timesheet.
Invoicing - The term invoicing is also used to refer to the act of delivering baggage to a flight company in an airport before taking a flight.
Statement - A periodic customer statement includes opening balance, invoices, payments, credit memos, debit memos, and ending balance for the customer's account during a specified period. A monthly statement can be used as a summary invoice to request a single payment for accrued monthly charges.
Progress billing used to obtain partial payment on extended contracts, particularly in the construction industry (see Schedule of values)
Collective Invoicing is also known as monthly invoicing in Japan. Japanese businesses tend to have many orders with small amounts because of the outsourcing system (Keiretsu), or of demands for less inventory control (Kanban). To save the administration work, invoicing is normally processed on monthly basis.
Utility bills
Bills from utility companies are based on measured (metered) use of electricity, natural gas or other utilities at a residence or business. When an individual or business applies for service from the utility (opens an account), he signs an agreement (contract) to pay for his metered use of the utility.
Electronic invoices
Some invoices are no longer paper-based, but rather transmitted electronically over the Internet. It is still common for electronic remittance or invoicing to be printed in order to maintain paper records. Standards for electronic invoicing varies widely from country to country. Electronic Data Interchange (EDI) standards such as the United Nation's EDIFACT standard include message encoding guidelines for electronic invoices.
But the most common continues to be PDF over email.
EDIFACT
The United Nations standard for electronic invoices ("INVOIC") includes standard codes for transmitting header information (common to the entire invoice) and codes for transmitting details for each of the line items (products or services). The "INVOIC" standard can also be used to transmit credit and debit memos. The "IFTMCS" standard is used to transmit freight invoices.
UBL
Use of the XML message format for electronic invoices has begun in recent years. There are two standards currently being developed. One is the cross industry invoice under development by the United Nations standards body UNCEFACT and the other is UBL (Universal Business Language) which is issued by [Oasis]http://www.oasis-open.org. Implementations of invoices based on UBL are common, most importantly in the public sector in Denmark. Further implementations are under way in the Scandinavian countries as result of the NES (North European Subset) project http://www.nesubl.eu. Implementations are also underway in , Italy, Spain, Holland and with the European Commission itself.
The NES work has been transferred to [CEN]http://www.cen.eu, (the standards body of the European Union) workshop CEN/BII, for public procurement in Europe. The result of that work is a pre-condition for PEPPOL, pan European pilots for public procurement, financed by the European commission. There UBL procurement documents will be implemented in cross border pilots between European countries.
Agreement has been made between UBL and UN/CEFACT for convergence of the two XML messages standards with the objective of merging the two standards into one before end of 2009 including the provision of an upgrade path for implementations started in either standard.
Payment for invoices
Organizations purchasing goods and services usually have a process in place for approving payment on the invoice based on an employee's confirmation that the goods or services have been received
