The Principal Laws Governing Electronic Invoices (e_Invoices or eBills) _ In Spain, Directive number 115 generally applies, although these regulations have also been reinforced in national policy, particularly in the following laws: Royal Decree number 1496 Billing Regulations.
Electronic invoices contain all of the information required in a traditional, paper invoice in an encrypted format, including data on the sender and recipient, such as their name and Tax ID number, the date of the invoice, the sender's legal address, the amount of the invoice and the percentage and amount of VAT, among other information. Furthermore, the document includes an electronic signature, which is generated using a digital certificate that has been provided to the sender of the invoice by a Tax Agency_approved certificate company. This combination of factors provides a Electronic Invoice with sufficient reliability so as to indisputably guarantee its integrity and the authenticity of its origin.
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.