Spanish SII System - New version becomes effective 1st July, 2018


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New version 1.1 of the Spanish VAT Reporting System (SII) becomes effective 1st July, 2018


Use of SII for sales tax reporting in Spain

What is SII?

From 1st July, 2018, the Spanish tax authority (AEAT) mandates the use of the new version 1.1 of the SII system for the immediate transfer of VAT related information. The former version 1.0 will coexist until 20th July, 2018.

The SII system for the immediate transfer of information on turnover-related information receives its first update to version 1.1, coming into effect on 1st July, 2018 – after just one year. The new version intends to eliminate various problems that have been spotted during operations by introducing relabeled or new fields and new codes for better transparency.

Learn more about “What is SII, Who needs to use it, the advantages etc.” in our first blog.

What will change with the new version 1.1 on July 1st, 2018?

  • Updated format of the AEAT XML messages, containing additional fields and content
  • New webservices’ version for communication with the SII
  • Reporting of additional transaction types

The description of the detailed changes of the SII version 1.1 are available on the website of the Agencia Tributaria (

With SEEBURGER, the complex SII process in the new version 1.1 can be quickly and easily implemented in order to avoid penalty payments

With the SEEBURGER Cloud Services for e-Invoicing in Spain – and many other countries – SEEBURGER offers you a secure, comfortable, scalable and high-performance entry at full cost transparency. We generate XML formats defined by the AEAT in the current version, and transfer these files via SII to AEAT. These cloud services are independent of the ERP system and can be expanded to include legally compliant archiving.

Learn more about SEEBURGER Cloud Services for E-Invoicing!

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About the Author:

Gerrit Onken
Gerrit Onken has been working as Product Manager at SEEBURGER AG since 2010 for software applications and services for electronic business data exchange. His focus is on solutions for SAP, electronic invoicing (E-Invoicing) and innovations for the digitalization of professional and technical business processes for internationally operating customers. Gerrit Onken is a bank merchant and a graduate in business administration with an emphasis on industrial management and business informatics. After working in the financial sector, he worked as a manager and project manager from 2004 to 2010 for one of the top five corporate consultations with international BPOs in the banking and automotive industry.

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