The tax regulation in Spain (Royal Decree 1619/2012) establishes the language and currency to invoice.The language of invoicesThe company can issue and receive invoices in any of the official languages spoken in Spain (Spanish, Catalan, Galician, or Basque), as well as in foreign languages. Only if the company is subject to control can the tax authorities require a translation in the following terms:In all cases, invoices received may require a translationInvoices issued may require a translation for transactions subject to Spanish VAT, as well as for exports and intra-community exports and deliveriesInvoices for services provided abroad and not subject to Spanish VAT may not require a translationThe currency of invoicesOn invoices where Spanish VAT is charged, the VAT tax must appear expressed in euros. Thus, if a Spanish company purchases products from an American multinational company operating in dollars and the invoices are in said currency, to deduct the VAT, it must appear expressed in euros.For calculation purposes, the conversion applies the seller’s exchange rate fixed by the European Central Bank valid at the date of the accrual of the tax.If you have any further questions regarding the issue of invoices in Spain,