Spain Digital VAT Reporting and Billing Control Framework
Spain has implemented a digital VAT reporting environment that enables the Spanish Tax Agency (Agencia Estatal de Administración Tributaria – AEAT) to receive transactional data electronically and with minimal delay. This framework combines real-time VAT reporting obligations with regulated requirements governing computerized billing systems.
The Spanish compliance landscape currently consists of two primary components:
- the Immediate Supply of Information (SII), a real-time VAT ledger reporting system; and
- VERI*FACTU, a regulatory framework establishing technical and functional requirements for billing and invoicing software.
Both systems aim to increase transparency, improve auditability, and ensure the integrity of accounting and billing records submitted to the tax authority.
What is the Immediate Supply of Information (SII)?
The Immediate Supply of Information (SII) is Spain’s electronic VAT reporting system introduced by the Spanish Tax Agency to modernize VAT bookkeeping obligations. Implemented in 2017, SII replaced traditional periodic submission of VAT books with near real-time electronic reporting.
Under SII, taxpayers transmit invoice record data extracted from their VAT ledgers directly to AEAT systems. The tax authority uses this information to automatically construct electronic VAT record books.
SII does not require taxpayers to submit invoice documents themselves. Instead, structured invoice data fields defined by ministerial orders are reported electronically.
The online VAT record books generated through SII include:
- Register Book of Issued Invoices
- Register Book of Received Invoices
- Register Book of Investment Goods
- Register Book of Specific Intra-Community Operations
This system allows the tax authority to maintain updated VAT information continuously rather than relying solely on periodic tax filings.
How SII Works
Taxpayers subject to SII must electronically submit billing record data shortly after invoice issuance or receipt.
Key operational principles include:
- invoice record data must be transmitted within four calendar days of issuance or accounting registration
- submissions are performed through XML-based web services or online forms provided by AEAT
- only invoice data fields are transmitted, not invoice files themselves
- AEAT validates submissions and updates VAT books automatically
The reporting process creates a continuously updated digital VAT ledger maintained jointly by taxpayers and the tax authority.
Who Must Comply with SII?
SII is mandatory for taxpayers required to submit monthly VAT returns. This includes:
- companies with annual turnover exceeding €6 million
- VAT groups
- taxpayers registered in REDEME (Monthly VAT Refund Register)
Other taxpayers may voluntarily opt into the SII system if they choose to adopt real-time VAT reporting.
What is VERI*FACTU?
VERI*FACTU is Spain’s regulatory framework governing computerized billing systems and invoice generation software. Introduced under Royal Decree 1007/2023, it establishes technical requirements designed to ensure billing records are secure, traceable, and resistant to manipulation.
Unlike SII, which focuses on VAT reporting after invoices are recorded, VERI*FACTU regulates how invoices and billing records are created at system level.
Scope of VERI*FACTU
VERI*FACTU applies broadly to businesses and professionals operating in Spain that issue invoices using computerized billing or accounting systems, except for taxpayers already subject to specific reporting regimes such as SII or those without invoicing obligations.
The regulation targets billing software rather than individual transactions. Its purpose is to ensure that invoice records generated by software systems:
- cannot be altered or deleted without detection
- maintain full traceability from creation onward
- comply with standardized technical and security controls
- remain accessible for tax inspection purposes
Under the VERI*FACTU framework, billing systems must generate secure and traceable invoice records. Systems may also be configured to automatically transmit billing record data to the Spanish Tax Agency (AEAT), depending on the operating model adopted by the taxpayer.
VERI*FACTU Technical Requirements
Billing systems falling within scope must comply with defined technical and functional standards, including:
- generation of immutable billing records
- sequential record chains linked through cryptographic hashes
- electronic signatures ensuring authenticity and integrity
- structured XML records using UTF-8 encoding
- timestamped audit trails and system event logging
- QR codes generated according to official technical specifications
- secure communication using qualified electronic certificates
These requirements are intended to prevent invoice manipulation and ensure reliable accounting data throughout the invoice lifecycle.
SII and VERI*FACTU: Reporting vs Billing Control
Although both obligations involve electronic data transmission to AEAT, they address different stages of the compliance process.
- SII focuses on VAT reporting by transmitting invoice ledger data after transactions are recorded.
- VERI*FACTU regulates billing software to ensure invoice records are generated securely and remain traceable from creation.
Together, they form complementary components of Spain’s digital tax control environment.
Current Compliance Status in Spain
Spain’s digital reporting framework is currently operational and evolving.
- SII has been mandatory for qualifying taxpayers since 2017.
- VERI*FACTU introduces standardized billing system requirements applicable to computerized invoicing environments.
- Businesses must ensure their accounting and billing systems align with both reporting and software compliance obligations where applicable.
Organizations operating in Spain are therefore required to maintain systems capable of supporting electronic VAT reporting while ensuring billing software complies with technical integrity and traceability standards defined by Spanish regulations.
How can SNI help you?
SNI’s Spain Compliance Solution supports businesses in meeting the digital reporting and billing system requirements established by the Spanish Tax Agency (AEAT), including Immediate Supply of Information (SII) reporting and VERI*FACTU billing system obligations.
The ERP-independent SNI solution, which can be integrated with SAP, Oracle, Microsoft, and other systems, automatically retrieves accounting and billing data directly from clients’ ERP environments. It maps and processes the data in accordance with AEAT technical specifications and securely transmits the required information through the official reporting channels..
With SNI’s solution, businesses can report VAT ledger records under the SII framework in near real time while ensuring billing records comply with VERI*FACTU requirements such as traceability and audit-ready record generation. Issued and received invoice records are managed within a single environment, enabling automated classification and submission of revenue and expense data without manual intervention.
SNI provides an end-to-end compliance process covering data extraction, transformation, validation, and submission within one solution, eliminating the need for external software or third-party tools. This approach reduces operational complexity, minimizes reporting errors, and supports continuous regulatory compliance.
The solution integrates with existing system landscapes without requiring upgrades and operates independently of SAP versions. It is compatible with SAP ECC 4.7 and above, SAP R/3, SAP S/4HANA, SAP Business Technology Platform (BTP), and can also integrate with non-SAP ERP environments.
FAQs About Spain Digital VAT Reporting
What is the difference between SII and VERI*FACTU?
Many businesses confuse SII and VERIFACTU, although they regulate different compliance areas. SII focuses on VAT reporting through electronic submission of invoice ledger data, while VERIFACTU regulates how billing systems generate and store invoice records to ensure integrity and traceability.
Who is required to comply with SII in Spain?
The Immediate Supply of Information (SII) system is mandatory for VAT taxpayers in Spain that are required to submit monthly VAT returns. This includes large companies with an annual turnover exceeding €6 million, VAT groups operating under a consolidated VAT regime, and businesses registered in the Monthly VAT Refund Register (REDEME).
These taxpayers must electronically submit invoice ledger data to the Spanish Tax Agency (AEAT) within the legally defined reporting timeframe. While SII primarily applies to these categories, other VAT taxpayers may voluntarily opt into the system if they wish to adopt real-time VAT reporting and electronic VAT book management.
What is the scope of VERI*FACTU?
VERI*FACTU applies to businesses and self-employed professionals in Spain that issue invoices using computerized billing or accounting systems. Rather than regulating invoice exchange, the framework focuses on the technical compliance of billing software used to generate invoice records.
The regulation requires billing systems to produce secure, traceable, and tamper-resistant records through standardized technical controls such as electronic signatures, hash chaining, and audit trail functionality. Its objective is to ensure the integrity, authenticity, and accessibility of invoice data throughout the record lifecycle and to prevent manipulation or deletion of accounting information.
Does VERI*FACTU require invoices to be sent to the tax authority?
Not necessarily. VERI*FACTU primarily regulates billing software compliance. In certain configurations, billing systems may automatically transmit billing record data to AEAT, but the main obligation is to generate compliant and traceable invoice records.
Do companies subject to SII also need to comply with VERI*FACTU?
No. Companies that are already subject to the Immediate Supply of Information (SII) system are generally excluded from VERIFACTU requirements. Since SII already provides the Spanish Tax Agency (AEAT) with near real-time VAT reporting, VERIFACTU mainly applies to businesses that are not covered by SII and need to comply with billing system control rules instead.