Why choose our Verifactu API?
- No need to rebuild your system
Stay Verifactu compliant without rebuilding your software or POS. Integrate the SIGN ES API and stay compliant with Spanish fiscal regulations, even as requirements evolve.
- Simple REST API integration
Connect through a REST API and send the required data to the Spanish Tax Agency without complex development or additional architecture, while keeping your existing logic intact.
- Sandbox and test environment
Integrate at your own pace and validate everything before going live. Test risk-free and activate only when you're ready. Simple, flexible, and with no strings attached.
- Clear pricing, no surprises
Request a tailored quote and pay only when your clients start to issue invoices. No hidden fees, no unnecessary commitments.
- Certified security you can trust
Our API is ISO 27001 and ISO 9001 certified, ensuring full privacy, integrity, and data protection.
- Real support when you need it
Access expert technical support and structured resources to resolve questions quickly, without long-term reliance on external help.
over
10 billion
digital signatures
active in
1 million
POS
over
97%
satisfaction rate
Why integrate fiskaly. SIGN ES?
Everything was straightforward, well documented and the webinar helped me to clarify the steps. Overall, the integration took around 1 day to complete.
From documentation to a live integration in a single day
~1 day
total integration time
Produkt
SIGN ES
1 von 3
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FAQs
Verifactu is the name used to refer to softwares that comply with the anti-fraud law and the project of legislation published in February 2022. The Ministerial Order was officially published in the Official State Gazette (BOE) on October 28, 2024, marking the start of the 9-month adaptation period for billing software. The regulation establishes the requirements for billing systems, which must be able to communicate in real-time with the Spanish Tax Agency.
Billing software will be required to comply with the VeriFactu requirements starting July 29, 2025.
Compliance with Verifactu requirements will be mandatory for companies and freelancers throughout Spain, except for all companies with a tax residence in the Basque Country, where the TicketBAI regulation applies.
Additionally, Verifactu will not replace the SII (Immediate Supply of Information) system, but it will impact those taxpayers who were not yet required to comply with it (companies and freelancers with an annual turnover of less than 6 million euros).
If you are a manufacturer or distributor of ERP software, accounting or management systems, whether B2B or B2C, and your system enables invoice issuance, Verifactu will also affect you because your software must be able to comply with the regulation mandatorily from July 29, 2025.
The Anti-Fraud Law aims to prevent and combat tax fraud and mostly came into effect on October 11, 2021. On October 28, 2024, the Ministerial Order was published, starting the 9-month adaptation period for billing software. Meeting the technical requirements of Verifactu is mandatory for developers and vendors of invoicing software in Spain since July 29, 2025. For taxpayers, the regulation comes into force in 2027, after the postponement announced by the Spanish government: on January 1 for legal entities, and on July 1 for self-employed professionals.
Yes, Verifactu applies to any software in Spain with invoicing capabilities, including POS systems, ERP, hotel management systems (CMS), invoicing programs marketed by independent developers (ISVs), or custom-developed business software.
Yes, Verifactu will be mandatory for issuing any type of invoice within Spain by a company with a tax domicile in Spanish territory (excluding the three provinces of the Basque Country, which must comply with TicketBAI, and companies based in Navarra, which are subject to a separate fiscal reporting regulation currently under development).