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The Verifactu law in Spain

Spain is introducing Verifactu, a system for digital tax control. The aim is to increase transparency and prevent tax fraud.

Companies, the self-employed and providers of cash register software are affected. They must meet certain technical requirements and record data securely.

Implementation is monitored by the AEAT, the Spanish tax authority. The legal basis can be found in Regulation HAC/1177/2024.

On this page you can find out what Verifactu is and what deadlines must be observed.

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Technical standards for electronic cash register systems (Regulation HAC/1177/2024)

On October 28, 2024, the Spanish Official State Gazette (BOE) published Regulation HAC/1177/2024, which sets out technical standards for POS systems in Spain.

The new regulations impose additional requirements on POS, ERP and PMS providers. The focus is on data integrity, retention and traceability to support secure and compliant accounting.

QR codes are also used on invoices and allow direct access to AEAT (Agencia Estatal de Administración Tributaria) records. This function improves the verification processes.

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What is Verifactu and why is it important?

With Verifactu, the Spanish government has created a new system. The aim is to improve transparency and security in tax reporting. The standardized transmission of tax-relevant data is intended to effectively combat tax fraud and irregularities.

The regulation primarily affects companies that use cash register software to process sales and other tax-relevant transactions. Verifactu is administered by the Spanish state tax authority, AEAT (= Agencia Estatal de Administración Tributaria). The authority is responsible for the implementation and monitoring of tax regulations.

Logo of the Spanish fiscal solution Verifactu with a yellow check mark – official marking for legally compliant accounting software in Spain.

The Verifactu system and the Ley Antifraude

The Verifactu system helps companies to implement the requirements of the Spanish tax authority AEAT. By integrating Verifactu, companies can transmit and sign their receipts in real time. This ensures that your company is legally compliant and complies with the anti-fraud law.

Law 11/2021, also known as the anti-fraud law (Ley Antifraude), has redefined the tax rules in Spain. The aim is to combat the shadow economy, which is estimated at around 200 billion euros. The regulation requires a comprehensive digital change.

The focus is on providers of cash register software, which must use so-called SIF systems. These must guarantee the integrity, immutability and complete traceability of all transactions.

Verifactu start date and deadlines

The Spanish tax authority AEAT has set binding deadlines for the introduction of Verifactu. Companies, manufacturers and the self-employed must implement the requirements in good time.

July 29, 2025 - deadline for POS, ERP and PMS manufacturers

From this date, providers of POS solutions may only sell certified versions that comply with the requirements of the Verifactu Act.

January 1, 2026 - Implementation deadline for companies

All legal entities are obliged to transmit their data to the AEAT via Verifactu and have it signed as of this date.

July 1, 2026 - deadline for the self-employed

From July 1, 2026, self-employed persons must also use a system that is compatible with Verifactu.

Technical requirements for Verifactu

To meet Verifactu's requirements, POS systems must meet specific criteria for data integrity, time stamping and data storage. Here is an overview of the most important requirements:
  • POS systems must comply with data integrity and ensure that the data records remain unchanged.
  • If the integrity cannot be guaranteed, a warning must be generated and the event must be reported.
  • An error margin of up to 60 seconds is permitted for time stamps of cash register data records.
  • All cash register data records must be retained - storage outside the original system is permitted.
  • Cash register data, including new and canceled entries, must be stored in XML format with UTF-8 encoding in real time. The exact structure and content are defined in Regulation HAC/1177/2024.

What is the Verifactu POS data set?

The POS dataset is an XML file that contains important invoice data and security information such as hash, timestamp and SIF ID. It is transmitted to the AEAT in real time and enables immediate validation by the tax authorities.

This data set is not to be confused with the B2B e-invoice from the "Crea y Crece" law. It is used exclusively for real-time tax control and is a central element of the Verifactu requirements.
All information about the Verifactu API
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Risks of non-compliance: Why you should act in good time

Companies that do not implement the Verifactu requirements risk high fines and possible legal consequences.

Adapting your systems helps to avoid such penalties and ensure your tax compliance.

Why efsta is the right partner for you

efsta provides you with expert support during the introduction of Verifactu. Our experience from over 16 countries forms the basis for a practical and legally compliant implementation. Our experts accompany you from planning to implementation and ensure that your software meets the requirements - quickly and efficiently.
  • The Verifactu requirements include special protocols for secure data transmission and compliance measures.
  • efsta offers you a flexible and future-proof solution that can be seamlessly integrated into your existing infrastructure.
  • Our experienced specialists will ensure that your POS software complies with the new regulations. This is done with little effort for your IT department.

What are the advantages of working with efsta?

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Complete compliance solution

Our systems are designed to transfer tax-relevant data securely and efficiently to the Spanish authorities.

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Easy integration

efsta can be easily integrated into your existing systems - quickly, securely and without great effort.

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Ongoing updates and support

Stay up to date not only for the current regulation, but also for future legal changes. Verifactu is an important step in the fight against fraud in Spain.

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Also available offline

efsta works reliably even without a permanent internet connection. This means you are always compliant with the law, even in environments with limited connectivity.

Are you ready for Verifactu?

With efsta, you can reliably implement the requirements - legally compliant and future-proof. Contact us for a free consultation about your requirements in Spain.

Individual advice from our experts

We are always available to answer your questions and find a suitable solution for your requirements.
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Frequently asked questions about the Verifactu regulation in Spain

What is Verifactu and what does it mean?
When does Verifactu come into force?
Who is affected by the Verifactu law?
What technical requirements must software for Verifactu fulfill?
What is meant by anti-fraud in the tax sector (Antifraude)?
What contribution does Verifactu make to combating fraud?
When will Verifactu become mandatory in Spain?

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