Editing Invoice (section)

==Variations==
There are different types of invoices:
* '''[[Pro forma]] invoice''' – In [[foreign trade]], a ''pro forma'' invoice is a document that states a commitment from the seller to provide specified goods to the buyer at specific prices. It is often used to declare value for [[customs]]. It is not an actual invoice, and thus the seller does not record a ''pro forma'' invoice as an [[accounts receivable|account receivable]] and the buyer does not record a ''pro forma'' invoice as an [[accounts payable|account payable]]. A ''pro forma'' invoice is not issued by the seller until the seller and buyer have agreed to the terms of the [[order (business)|order]]. In a few cases, a ''pro forma'' invoice is issued to request advance payments from the buyer, either to allow production to start or for security of the goods produced.
* '''[[Credit memo]]''' - If the buyer returns the goods, 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.<ref>[http://www.dhl.com/en/express/shipping/customs_support/customs_paperwork.html DHL | Global | Customs Paperwork<!-- Bot generated title -->] {{webarchive|url=https://web.archive.org/web/20150417111615/http://www.dhl.com/en/express/shipping/customs_support/customs_paperwork.html |date=17 April 2015 }}</ref> 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 [[tariff]]s.
* '''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 (accounting)|balance]] and any late fees owed. In function, debit memos are identical to invoices.
* '''Self-billing invoice''' - A ''self billing invoice'' is used when a buyer issues the invoice to themselves (e.g. according to the consumption levels he is taking out of a [[vendor-managed inventory]] stock).<ref>ControlPay, [https://www.controlpay.com/services/freight-audit-solutions Self-billing] {{Webarchive|url=https://web.archive.org/web/20150930231950/https://www.controlpay.com/services/freight-audit-solutions |date=30 September 2015 }}, accessed 26 April 2018</ref> The buyer (i.e. the issuer) should treat the invoice as an account payable and the seller should treat it as an account receivable. If there is tax on the sale, e.g. VAT or GST, then the buyer and seller may need to adjust their tax accounts in accordance with tax legislation.<ref>{{cite web|last=HMRC|title=Self-billing and VAT|date=31 December 2020|url=http://www.hmrc.gov.uk/vat/managing/charging/self-billing.htm|access-date=22 November 2012|archive-date=7 November 2012|archive-url=https://web.archive.org/web/20121107102151/http://www.hmrc.gov.uk/vat/managing/charging/self-billing.htm|url-status=live}}</ref> Under Article 224 of the EU VAT Directive, self-billing processes may only be used "if there is a prior agreement between the two parties and provided that a procedure exists for the acceptance of each invoice" by the supplier.<ref>Consolidated VAT Directive, 2006, Article 224</ref> A Self-Billing Agreement will usually provide for the supplier not to issue their own sales invoices as well.<ref>{{Cite web |url=https://www.gov.uk/guidance/self-billing-notice-70062 |title=Notice 700/62 - Self-billing) |access-date=26 April 2018 |archive-date=26 April 2018 |archive-url=https://web.archive.org/web/20180426144607/https://www.gov.uk/guidance/self-billing-notice-70062 |url-status=live }}</ref>
* '''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 for 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."<ref>{{Cite web |url=http://scm.ncsu.edu/public/facts/facs041014.html |title=SCM {{!}} What is Evaluated Receipt Settlement?<!-- Bot generated title --> |access-date=22 June 2007 |archive-date=22 June 2007 |archive-url=https://web.archive.org/web/20070622032609/http://scm.ncsu.edu/public/facts/facs041014.html |url-status=live }}</ref>
* '''Timesheet''' - Invoices for hourly services issued by businesses such as [[lawyer]]s and [[consultant]]s often pull data from a [[wikt:timesheet|timesheet]]. A timesheet invoice may also be generated by [[Operated equipment rental|Operated equipment rental companies]] where the invoice will be a combination of timesheet based charges and equipment rental charges.
* '''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.
* '''Continuation Invoicing''' or '''Recurring Invoicing''' is standard within the equipment rental industry, including tool rental. A recurring invoice is one generated on a cyclical basis during the lifetime of a rental contract. For example, if you rent an excavator from 1 January to 15 April, on a calendar monthly arrears billing cycle, you would expect to receive an invoice at the end of January, another at the end of February, another at the end of March and a final Off-rent invoice would be generated at the point when the asset is returned. The same principle would be adopted if you were invoiced in advance, or if you were invoiced on a specific day of the month.
* '''Electronic Invoicing''' is not necessarily the same as [[Electronic data interchange|EDI invoicing]]. Electronic invoicing in its widest sense embraces EDI as well as [[XML]] invoice messages as well as other formats such as [[PDF|Acrobat/PDF]]. Historically, formats such as PDF were not included in the wider definition of an electronic invoice because they were not machine readable and the process benefits of an electronic message could not be achieved. However, as data extraction techniques have evolved and as environmental concerns have begun to dominate the business case for the implementation of electronic invoicing, other formats are now incorporated into the wider definition.