E-invoicing in Spain

The Spanish model e-invoicing differs from a traditional clearance platform. Invoices do not require tax authority approval before delivery to the recipient. Instead, it combines invoice exchange, mandatory submission of invoice copies to the AEAT, invoice status reporting and payment information within a single ecosystem.

In the context of mandatory e-invoicing, companies using SAP in Spain will need to adapt their systems to support multiple formats, different exchange channels, status reporting, and integration with local compliance requirements.

Under the Spanish B2B e-invoicing framework, the AEAT public solution will operate alongside private e-invoicing platforms. Private platforms will submit a copy of the invoice in UBL format to the AEAT. Companies will also be required to handle invoice statuses, including acceptance or rejection, and report full payment and the date on which it was made.

This is an important distinction from basic document exchange models. Spain is developing a system in which e-invoicing supports not only the digital transmission of invoices, but also greater transparency throughout the payment process between companies.

Companies using SAP must prepare to handle statuses, messages, payment data, and the linking of sales and purchasing documents to local reporting requirements.

Businesses with annual turnover exceeding EUR 8 million have until October 6, 2027, and all other businesses until October 6, 2028. Smaller suppliers should not wait either, because their large customers may already expect structured e-invoices from 2027.

The model involves multiple formats, different platforms, and additional reporting of invoice statuses and payments, which requires a thorough analysis of processes in an SAP environment.

Preparations should include:

• analysis of Spanish invoicing processes in SAP,
• identification of documents subject to the B2B e-invoicing mandate,
• mapping data to the required formats,
• support for UBL, UN/CEFACT CII, Facturae, and EDIFACT,
• integration with the AEAT’s public solution or private platforms,
• preparation of invoice copy reporting,
• handling of invoice acceptance/rejection and payment statuses,
• validation of data and structures,
• integration with financial, procurement, and sales processes.

For multinational companies, it will also be crucial to distinguish the new B2B mandate from existing Spanish systems, such as FACe for B2G, SII for VAT ledger reporting, and Veri*factu for the integrity of invoicing systems.

All for One helps companies adapt their SAP systems to local legal obligations and compliance requirements. The experience we gained while building the platform for mandatory e-invoicing in Poland provides a strong foundation for helping companies prepare their SAP systems for the requirements applicable in Spain.

Our e-invoicing solution All for One KSeF is already used by over 120 companies. In these projects, we supported clients with mapping invoice data, integrating SAP with the Polish National System of e-Invoices (KSeF) – Ministry of Finance’s platform – document validation, status handling, process monitoring, and preparing business users to work with e-invoices.

The Spanish model requires a similar approach: a combination of regulatory expertise, SAP integration, data quality, and practical process management within finance operations. Status updates, payment information, and integration with various platforms will be particularly important.

The All for One E-Invoicing integration layer connects SAP with public and private e-invoicing platforms without the need to build a separate interface for each scenario. The solution can support both document exchange and the reporting of required information within the local ecosystem.

We support various SAP versions and different architectural models, so the solution can be tailored to a local company in Spain, a shared services center, or a global organization with multiple locations.

The Spanish e-invoicing model will require companies not only to issue structured invoices, but also to monitor payment statuses and information. This means that the SAP implementation should cover the entire invoicing process, not just the technical conversion of the document.

All for One will help you prepare your SAP system for e-invoicing in Spain, offering support for the required formats, integration with public and private platforms, and expertise gained from over 120 e-invoicing projects in Poland.