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Is your company ready for the SII?

Todo lo que tiene que saber del Suministro Inmediato de Información (SII)

NEW PLATFORM

Axional SII

It ensures integration with the AEAT as well as with the Regional Tax Authorities and the Canary Islands Tax Agency, guaranteeing real-time exchange of your business transactions. Deister, as an official AEAT partner, is certified to submit your invoices without requiring an active digital certificate, simplifying your daily administrative processes and keeping you up to date with any legal or regulatory changes.

On_demand oOn_Premise

Certified by the Tax Agency

What is it?

The Immediate Supply of Information (SII) is a faster and more modern system for the online management of accounting record books.
Through the Electronic Headquarters of the Spanish Tax Agency (AEAT), companies are required to electronically submit their billing records (not the invoices themselves).
With this information, the AEAT will generate the different Record Books in real time.

When does it come into effect?

Since July 1, 2017, a total of 62,000 companies have been required to electronically submit their billing records.
Each year, new features and updates have been introduced, and Axional SII has been updated to meet the new 2022 requirements. Soon, we will launch the updated 2023 version.

Who is required to comply?

Large companies with an annual turnover exceeding 6 million euros.
Companies registered in the REDEME (Monthly VAT Refund Scheme).
SMEs and self-employed individuals who are part of the special VAT group regime.
Optionally, any other taxpayer who does not meet the above requirements may choose to adopt the new system.

Benefits for your company

You will have more time to file your periodic tax returns — an additional 10 days.
It will no longer be necessary to submit forms 340, 347, and 390.
You will face fewer information requests from the AEAT, as they will now have detailed access to the content of your invoices.
Errors will be reduced, as the Electronic Headquarters will have each company's tax data to generate a VAT draft and simplify its filing.
Axional ERP es la solución moderna y eficiente para cumplir con las obligaciones SII.

How it works

Learn step by step how our Axional FI-SII system works.

Issuing and recording of invoices

Sales invoices are issued and purchase invoices are recorded in the accounting system/ERP following the usual procedures.
Customer and supplier invoices are posted following the current processes.

Axional FI-SII

The new Axional FI-SII module maps invoices and tax records to convert the data into the format required by the AEAT.
Manage at all times the invoices already reported, those pending submission, the status of transmissions, and the responses received — while maintaining full traceability of data modification and deletion processes. Learn more about Axional FI-SII.

Envío a la EAT

Once converted, the data is sent to the Electronic Headquarters of the AEAT.
Once verified, the agency will return the submitted data with one of the following statuses:
  • Full acceptance.
  • Partial acceptance.
  • Full rejection.
Trabajadores revisando los datos de los clientes en un documento
Discover our solutions for managing and administering your Finances, and find the one that best fits your needs.

Prepare your company for the change

  1. Compruebe si está obligado a gestionar sus libros de registro de IVA.
  2. Keep your accounting up to date and start recording invoices in a shorter period of time.
  3. Get trained in advance to fully understand this innovative management system.
  4. Although not required, you may choose to voluntarily join the SII, thereby being exempt from filing forms 340, 347, and 390.
  5. Check with your software provider to confirm whether your billing and/or accounting solution is adapted to the change.

It can run in the cloud or be installed on your own servers.

All information can be uploaded to the SII platform fully integrated with your ERP, or we can provide you with an Excel template to easily upload all your data to the Axional SII module.

01

Without the need to
change your ERP

Axional SII is a solution that adapts to each company based on its specific needs.

02

Your data always remains your property.

Axional SII can be installed on your local servers or through our cloud services, while always ensuring the security and privacy of your data.

03

Assisted installation and training

Our team of specialized consultants will support you throughout the entire installation and training process of the solution.

Benefits of the Axional SII platform
for VAT management

Time savings in SII management.
Technical support and financial specialists.

Allows management of multiple companies.

Compliance with regulations and adaptation to ongoing changes.
Mockup desktop de facturas

Informative portal to maintain constant visibility of your invoice status.

With Axional SII, you will have access to a web platform that allows you to view the status of your invoices in real time, from anywhere. Axional SII is the most complete solution on the market: it automates all your invoices and automatically notifies you of any errors so you can resolve them immediately.

Frequently Asked Questions (FAQ)

Discover the most common questions
What is the Immediate Supply of Information System (SII)?

The Immediate Supply of Information (SII) is a new system for keeping VAT record books through the Electronic Headquarters of the AEAT, by means of the near real-time submission of billing records. In this way, the new SII brings the recording or accounting of invoices closer to the actual moment when the underlying economic transaction takes place.

When does the change take effect, and which taxpayers are affected?

The SII has been mandatory since July 1, 2017, for taxpayers currently required to file VAT returns on a monthly basis (around 63,000 entities), including:

  • Large companies (annual turnover over 6 million euros).
  • VAT groups.
  • Registered in REDEME (Monthly VAT Refund Scheme).
  • Taxpayers who voluntarily choose to adopt the new system.
Can companies choose to opt in voluntarily?

Yes. There will be an option to join the system for those taxpayers who wish to benefit from its advantages, even if they do not meet the mandatory requirements.

What new obligations does the Immediate Supply of Information (SII) involve?

The main obligation is that companies must submit their billing records, as well as the declaration of other operations, electronically and immediately through the AEAT’s Electronic Headquarters.

How does the change impact the management of my business?


You will need to check whether you are required to manage your VAT record books electronically. If so, keep your accounting up to date and ensure your invoices are properly recorded with reliable accounting software. Additionally, it is advisable to get trained in advance to fully understand this new telematic VAT management system.

¿Cuáles son las ventajas para mi empresa?

Keep in mind that the SII will maintain a repository of record books to instantly match incoming and outgoing invoice data (Forms 340, 347, and 390). Data verification will be faster, as the Tax Agency will receive the information in real time. You’ll save time by no longer needing to manually maintain VAT record books, since the AEAT will update them automatically with the data provided by the taxpayer. Additionally, there will be fewer errors, as the AEAT will generate a sort of "VAT draft" based on this information for companies.

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