Verifactu: what it is, new implementation timeline and how to adapt your backoffice smoothly

Invoicing in Spain is entering a new phase. Verifactu, the system promoted by the Spanish Tax Agency (AEAT), is redefining how companies issue, register and control their invoices.

This is not just a legal obligation. It represents a structural change in how business management systems, invoicing software and backoffice platforms must operate: more control, more traceability and full automation.

What is Verifactu and why does it directly impact your business software?

Verifactu (VERI*FACTU) is a system that allows the Spanish Tax Agency to receive invoicing data automatically and almost in real time from companies and professionals.

It is part of Law 11/2021 on the prevention of tax fraud, whose goal is to ensure the integrity, traceability and immutability of invoicing records, eliminating the use of software that enables manipulation or parallel accounting.

From a business perspective, Verifactu has a direct impact on invoicing software, ERP systems and backoffice platforms, as it requires a redesign of invoice issuance, registration and control workflows.

Official Verifactu implementation timeline

Following recent regulatory updates approved by the Spanish Government and communicated by the Tax Agency, the mandatory use of Verifactu has been officially postponed to 2027 for companies and self-employed professionals.

This postponement reflects the technical complexity of the adaptation and the real impact Verifactu has on invoicing and backoffice systems.

Definitive mandatory dates

• 29 July 2025: obligation for software vendors and developers to ensure their invoicing systems meet Verifactu technical requirements.
• 1 January 2027: mandatory for companies subject to Corporate Income Tax.
• 1 July 2027: mandatory for self-employed professionals and other taxpayers.
  
  

This new timeline does not remove the obligation, but it provides a strategic window to plan, develop and test integrations without rushing or relying on temporary fixes.

Companies using proprietary software or custom backoffice solutions should take advantage of this period to prepare in advance and avoid operational risks once Verifactu becomes mandatory.

Which companies are affected by Verifactu?

Verifactu is mandatory for all organizations issuing invoices, regardless of their size or sector, such as:

• Companies with their own billing software.
• Organizations with custom ERP or backoffice.
• Digital platforms with integrated billing processes.
• Business groups with multiple entities or complex workflows.

If your company uses a standard system, it will depend on the provider's update. But if you work with a customized backoffice, you need a specific Verifactu integration aligned with your real processes.

Technical requirements for Verifactu-compatible software

The regulations establish specific technical requirements that any system must meet:

• Generation of structured billing records.
• Automatic sending of information to the AEAT.
• Guarantee of the invoices' immutability.
• Timestamping and complete traceability.
• Inclusion of QR codes and verification codes.
• Event logging and audit logs.

This means that many current systems will require a deep adaptation, not just simple superficial adjustments.

The real challenge: adapting Verifactu without operational friction

The main risk of Verifactu is not technical compliance, but its impact on day-to-day operations.

Invoicing is usually connected to customer management, accounting, payments, reporting and customer support. Implementing Verifactu in isolation can lead to duplicated processes, loss of control or dependency on external tools.

That is why at SEION we treat Verifactu as an integrated component of your digital ecosystem, not as a standalone module.

How we integrate Verifactu in SEION Backoffice

SEION Backoffice is a modular platform designed to scale and adapt to regulatory changes. Our Verifactu integration is built on four key pillars:

1. Functional and technical analysis

We review your invoicing flows, existing systems and integrations to define the optimal adaptation strategy.

2. Verifactu-ready module development

• Automatic generation of compliant records.
• Direct transmission to the Tax Agency with no manual intervention.
• Embedded QR and verification codes.
• Full traceability and logs accessible from the backoffice.
  

3. Automation and control

• Reduced manual errors.
• Stronger fiscal control.
• Real-time alerts and monitoring.
• Centralized, auditable information.
  

4. Continuous evolution and maintenance

We ensure your system remains aligned with current regulations and future legal or technical changes.

Turning Verifactu into a competitive advantage

Verifactu is not just a legal requirement. When implemented correctly, it becomes an opportunity to professionalize invoicing, improve internal control and build a more robust technological foundation.

The difference is not whether you comply, but how you comply.

That is why SEION Backoffice delivers Verifactu solutions fully aligned with your business.