Doctrine by topic · DGT Observatory

Audit Trail: DGT doctrinal evolution

How the DGT's position on this topic has evolved, and the rulings it rests on.

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How the DGT's position has evolved

Settled doctrine High confidence 14 rulings · 2014–2026

Current position

The invoice may be issued on paper or in electronic format, provided that the authenticity of its origin, the integrity of its content, and its legibility are guaranteed. Authenticity and integrity can be obtained through advanced electronic signature, EDI, or any other means of proof admitted in Law, such as management controls that allow for a reliable audit trail. Prior validation of the system before the AEAT is optional.

The DGT's position has remained constant since 2014, confirming that authenticity and integrity do not depend exclusively on electronic signature. It has been reiterated that management controls allowing for a reliable audit trail are valid means to comply with the regulations. The doctrine is consistent in that validation before the AEAT is an option and not a mandatory requirement.

Turning points

  1. V0068-14

    Establishes that authenticity and integrity can be guaranteed through management controls that allow for a reliable audit trail.

  2. V3213-15

    Clarifies that prior validation of the system before the AEAT is optional and does not condition compliance with the requirements.

Analysis based on 14 of 14 rulings with a stated position. Updated 26 September 2026.

Rulings on this topic

14
V5126-26 7 Jul 2026

Business owners can choose between paper or electronic invoices

SG de Impuestos sobre el Consumo
factura electrónicafactura simplificadasistema informático de facturaciónobligación de facturaciónsoporte electrónico LIVA — Ley 37/1992 del IVA art. 4.1LIVA — Ley 37/1992 del IVA art. 4.2
Affects CompanyExpat · Non-residentIndividual
V3407-16 19 Jul 2016

Electronic invoices in PDF format may be sent via email or secure portals

SG de Impuestos sobre el Consumo
factura electrónicafirma electrónica avanzadaremisión de facturasautenticidad del origenintegridad del contenido LIVA — Ley 37/1992 del IVA art. 164.1.3ºLIVA — Ley 37/1992 del IVA art. 164.2
Affects CompanyExpat · Non-residentIndividual

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