The Types of e-Invoicing

/ Glossary of Business Terms

Types of e-Invoicing

There is often confusion between different types of invoice automation under the term ‘e-Invoicing’. Invoice automation via scanning and Optical Character Recognition (OCR), is the digitisation of paper-based invoices upon receipt by the buyer. Issuing PDF invoices via email is another form of automation, but while it removes paper from the process, it does not provide full integration. Both of these methods are often referred to as e-Invoicing, but are not really considered to be ‘true’ e-Invoicing.

True e-Invoicing fully automates the invoice capture and receipt process, so the buyer does not need to perform any data entry – that’s because invoice information flows directly from the supplier to the buyer’s back-office system, requiring no manual intervention by the buyer. The buyer receives invoices from its suppliers using formats that have been agreed in advance. The invoices may include mechanisms – such as digital signatures and EDI – that ensure their authenticity and integrity. They will arrive at the buyer in a format that can be integrated into their ERP and then archived for the legally required period, without being altered in any way.

The diagram below illustrates e-Invoicing with compliance.

getsix e-Invoicing compliance

In essence, there are really 2 types of ‘true’ e-Invoicing that you need to understand. e-Invoicing with or without compliance.

e-Invoicing without compliance

The process for electronic invoicing without compliance is as follows:

  • The buyer and supplier agree the format that the e-Invoice will take and the data to be included;
  • The data will be correctly structured (X12, Edifact, XML) using technology such as EDI or simple web forms for web invoicing;
  • The supplier creates and sends an electronic invoice either directly from their Accounts Receivable (AR) system or via a web-based form;
  • The buyer receives the electronic invoice in a format ready to be processed by the Accounts Payable (AP) system.

In this instance, the e-Invoice conforms only to the data formats that are established by the trading partners. It does not accommodate the regulatory obligations of the countries, in which, the electronic invoice is issued or received. In some cases this is because some countries have little or no e-Invoicing regulations, and others because companies choose to capture the B2B efficiencies, while running a tax compliant paper process.

e-Invoicing with compliance

The process for electronic invoicing with compliance is very similar to the process above, except for:

  • The format of the e-Invoice data is determined by the legislation and regulations of the territories in which both parties are trading;
  • The e-Invoices adhere to government-specified guidelines for e-Invoice content validation, security, non-repudiation and archiving;
  • The invoices are easily available for audit and VAT purposes;
  • Paper is fully removed from the process.

It makes sense for an organisation to adopt this approach as it will facilitate their VAT obligations. However, there are no standard regulations governing e-Invoicing. Instead, there are widely varying, country-specific approaches – ranging from complete prohibition to almost no restrictions – that any company trading internationally will have to understand and accommodate.

A note on invoice automation via scanning and OCR

Although the scanning of paper-based invoices isn’t considered e-Invoicing, it is the natural first step for many organisations. Using OCR software, the data can be moved from a paper-based format to a digital format that can be entered in the AP system.

getsix OCR

OCR is not an error-free solution and legibility issues with the original invoice will necessitate manual data entry to resolve any issues. In most cases, some manual data entry will be required. Once an OCR initiative is introduced, your organisation can benefit from some time and cost savings in the routing, approval and payment of invoices. However, this approach should only be seen as a short term measure.

A note on emailing PDF invoices

Issuing a PDF invoice by email, whether compliant or non-compliant, does remove paper from your process, but it creates new problems for your customers. The customer’s AP department still has to capture the data from the PDF, and this can only be achieved by separate OCR technologies (sometimes printing the PDF invoice) or by keying the data directly from the PDF image. While PDF invoices can be a good first step on the road to true e-Invoicing, they do not provide the end-to-end integration.

Need any help?

One of our e-Invoicing experts would be happy to answer any questions you have. Simply ask our e-Invoicing experts.


Last updated: 21.01.2022

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