Types of Electronic Invoices _ An electronic invoice is one which meets the same requirements that apply to invoices issued on paper, except that it is presented in electronic format and its authenticity and integrity are guaranteed. In order to guarantee a document's authenticity and integrity, there are three possible methods: Utilization of a recognized digital signature, which is based on a recognized certificate and generated using a secure device for creating signatures. Remittance through an "EDI" system, which ensures integrity and authenticity. Use of another system which, in the opinion of the Auditing Department of the State Tax Agency, ensures authenticity and integrity, whenever the taxpayer issuing the invoice has applied for Agency approval of the system in question. In general, the use of a recognized electronic signature is considered to be an essential element of electronic invoices.
About proforma invoice _ A Proforma invoice is an invoice provided by a supplier in advance of providing the goods or service. A quotation in the form of an invoice prepared by the seller that details items which would appear on a commercial invoice if an order results. It is more of 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 to declare value for customs. It is not a true invoice, because the seller does not record a pro forma invoice as an accounts receivable and the buyer does not record a pro forma invoice as an accounts payable.