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Spotlight PEPPOL BIS Billing 3.0 The EU e-invoicing mandate is here — France Sept 2026, Belgium Jan 2026, Germany 2025.

SII

Spain's near-real-time CTC reporting model, VAT ledger book submission.

Definition

SII is not a clearance model: the invoice is not validated before exchange. The taxpayer transmits, via XML web services, the entries of its statutory VAT ledger books (issued invoices, received invoices, capital goods, intra-Community transactions) to the AEAT within four business days. It is near-real-time transactional reporting, distinct from e-invoicing.

Origin

Established by Royal Decree 596/2016 of 2 December 2016, amending the Spanish VAT regulation, and operated by the Agencia Tributaria (AEAT). Mandatory from 1 July 2017 for large taxpayers.

Example in context

A large Spanish group issues an invoice on Monday; it has until Friday (4 business days, excluding weekends and holidays) to push the corresponding entry of the Libro registro de facturas expedidas through the AEAT's SuministroLRFacturasEmitidas web service.

  • CTC — the family of transaction controls that includes near-real-time reporting.
  • Clearance vs post-audit — SII sits between the two: reporting without prior validation.

Last updated: June 20, 2026