Verifactu is now mandatory: what SMBs and software vendors need to know today
From July 29, 2025, Verifactu becomes a reality for all invoicing software providers in Spain. With the regulation now in effect, every invoicing system must meet the technical requirements set by the Spanish Tax Agency (AEAT), a major shift in how small and medium-sized businesses issue invoices.
While taxpayers (companies and self-employed professionals) must comply starting in 2026, developers and providers of invoicing software are already required to do so. This marks the beginning of a new era: digital fiscalization.
What changes on July 30, 2025?
From this date on, any invoicing software that is sold, updated, or deployed must be Verifactu-compliant. In short, it must:
- Generate files in the Verifactu-compliant format,
- Include a chained hash to ensure the immutability of records,
- Add a readable QR code for anyone,
- Submit records in real time to the Spanish Tax Agency.
This transition makes traditional invoicing models obsolete: "deleting and reissuing" an invoice without leaving a trace will no longer be possible. Everything must now be digitally traceable and auditable.
Penalties are changing too
Non-compliance is no longer an option. The AEAT has made it clear that its focus is on software. It recently launched a major enforcement campaign against dual-use software, with over 100 inspections across 15 Spanish regions under Operation Amperio.
Providers distributing non-compliant software risk penalties of up to €150,000 per fiscal year and per system. Clients using non-compliant software could also face disruptions and penalties of up to €50,000 if their invoices are not considered valid.
Lessons from the Basque Country: what TicketBAI taught us
The rollout of TicketBAI in the Basque Country offered valuable insights:
- Those who prepared early integrated more smoothly and avoided last-minute pressure,
- SMBs and self-employed workers appreciated having software that was ready and certified,
- Ongoing support from software providers made a huge difference.
Now, Verifactu expands this scenario nationwide (except in Navarra), increasing the impact: thousands of small businesses will need help during the transition.
The key role of software providers: more than just vendors
For many small businesses, Verifactu compliance will depend entirely on their software provider. That’s why developers must step up as strategic partners, not just tool providers.
How can you support your clients?
- Offer software that is already Verifactu-compliant,
- Provide guidance on the new legal obligations,
- Train teams on the new invoicing workflow,
- Keep systems updated as AEAT requirements evolve.
Above all, help your clients avoid risks and fines due to non-compliant software.
fiskaly SIGN ES: built for developers and businesses
We know that navigating evolving tax regulations is complex. That’s why we created fiskaly SIGN ES: a Verifactu API built for developers of invoicing, ERP, and POS systems looking to integrate compliance without overloading their teams or rewriting their codebase.
With fiskaly SIGN ES, you can:
- Comply with Verifactu, TicketBAI, and B2B e-invoicing with a single integration,
- Enjoy a fast implementation (2 to 5 days),
- Access full technical support and detailed documentation,
- Ensure data protection through ISO 27001 and ISO 9001 security standards,
- Receive constant updates to stay compliant at all times.
As an official Social Collaborator of the AEAT, fiskaly maintains a direct line with the tax authorities to provide accurate, up-to-date guidance.
Verifactu is a reality now, and while the challenge is real, so is the opportunity to be a trusted provider who protects, advises, and facilitates compliance. With solutions like fiskaly SIGN ES, you can leave compliance to the experts and focus on what you do best: building great software.