SII Spain: Quick Guide

SII Spain: Suministro Inmediato de Información

SII Spain is an electronic VAT system that affects thousands of large companies across the country. It can seem complicated, but it doesn’t have to be.

The mandate is demanding, with the impacted groups having to stay on top of the four-day reporting period. If your business meets the criteria of SII Spain, you may well be feeling the pressure of having to comply.

Sovos is here to help, breaking down Spain’s SII system into simple terms by covering topics such as:

  • How companies can comply (and what to expect if they don’t)
  • Key details about the mandate and how it’s developed over time
  • How Sovos can ease the burden for you at every stage

Get in touch

Stairs with Spanish flag in a Spanish town

Who SII affects

The mandate affects Spanish companies above an annual turnover threshold of over €6 million. It’s also applicable to VAT business groups, companies that participate in the monthly tax refund system known as REDEME and other businesses that voluntarily sign up.

Quick facts about SII Spain

  • The Spanish mandate applies to companies with an annual turnover above €6 million, companies that are part of VAT groups, and companies using the REDEME system.
  • The following records must be sent to the tax authority:
    • Registered book of issued invoices
    • Registered book of received invoices
    • Registered book of investment goods
    • Registered book of certain intra-community operations
  • The transmission of the information must be via web services available to exchange XML messages.
  • Some formal obligations are reduced as taxpayers will no longer be required to file the information returns form 347 (third-party information), form 340 (transactions in register books) and form 390 (VAT annual summary).
  • In 2020 the Spanish tax administration introduced a service to pre-populate the periodic VAT return (Modelo 303) using the information taxpayers supplied via the SII.

SII Spain: Rollout dates

2 January 2017: The immediate supply of information on a voluntary basis for taxpayers in Spain begins

1 July 2017: The mandatory phase of the immediate supply of information for taxpayers under the scope of the mandate begins

1 January 2018: The period to supply information was reduced from 8 days to 4 days. Mandate also extended to other Spanish territories (Basque Provinces and Canary Islands).

1 January 2020: Introduction of a ledger to record operations related to the sale of goods in consignment.

4 January 2021: Introduction of new validations and fields that record the sales of goods in consignment

Penalties: What happens if you don’t comply

  • Omissions or inaccuracies in the information reporting obligation have a penalty of up to 1% of the total amount missed, with a maximum of €6,000.
  • Late reporting of real-time electronic VAT ledgers will trigger a penalty of 0.5% of the total amount reported, with a minimum of €300 and a maximum of €6,000 per quarter.
  • Errors or omissions in the Registered book of certain intra-community transactions and Registered book of Investment goods has a fixed penalty of €150.
Streets of the Barrio de Santa Cruz or Casco Antiguo, Santa Creu (or El Barrio) is the area of the old town of the city located on the side of a hill. The area is famous for its lively nightlife.

Sovos Helps Companies Stay Compliant with Spain’s SII

Sovos serves as a true one-stop-shop for managing all VAT compliance obligations in Spain and across the globe.

Sovos supports the Suministro Inmediato de Información (SII) platform, ensuring our customers remain compliant with the legal and technical framework developed by the Spanish tax authority (AEAT).

Sovos experts continually monitor, interpret, and codify these changes into our software, reducing the compliance burden on your tax and IT teams.

FAQ for SII in Spain

What is SII in Spain?

The Suministro Inmediato de Información (SII) is a platform to submit invoice data to the tax authority in Spain. Taxable persons who are in scope must report invoice data within four business days following the date of issue.

In 2020 the tax administration announced a new version of the SII, introducing a ledger to record operations related to the sale of goods in consignment. This came into effect on 1 January 2021.

When did Spain introduce SII?

The Suministro Inmediato de Información (SII) was introduced on 2 January 2017 on a voluntary basis, extending to a mandatory basis on 1 July 2017. Since then, there have been changes and additional requirements

More resources for E-invoicing and tax compliance

Want to learn more about VAT compliance in Spain and other European countries? Download our guide.

Need immediate help for SII in Spain?

Speak to our tax experts who can help answer your SII Spain queries.