Verifactu 2027: The Law That Never Comes... Until It Does
And how to get ready with Odoo before it's too late
It's happened to all of us at some point: we read about a new tax regulation, check the calendar, see that the deadline is still months away, and think, "We'll deal with this later."

That is exactly what happened with Verifactu. However, the window of opportunity to act is drastically reduced: On January 1, 2027, it will become mandatory The new invoicing regulations for companies and businesses in Spain. Waiting until the fourth quarter of 2026 to adapt your systems will mean only two things: technical bottlenecks and the risk of fines of up to €50,000.
But far from being a mere administrative formality, Verifactu is the perfect excuse to do something your company has probably needed to do for some time: make the switch to a modern ERP system like Odoo.
What is Verifactu, and why is the deadline being shortened now?
Verifactu is the system established under the Anti-Fraud Law, which requires that all invoicing software ensure the immutability, integrity, traceability, and retention of invoice issuance records.
The three technical requirements your software must meet
Digital Fingerprint Generation (Chained Hash): Every invoice you issue is cryptographically linked to the previous one, making it impossible to delete or alter past invoices.
Required QR code: All invoices issued (in PDF or on paper) must include a verification QR code.
Connection to the Tax Agency: The system must be capable of automatically and immediately submitting billing records to the AEAT.
Are You Exempt? The SII Case
If your company is already subject to the Immediate Information Reporting System (SII), you are exempt from implementing Verifactu.
The Risk of Waiting Until the Last Minute: Fines of Up to €50,000
Article 201-bis of the General Tax Law establishes fines of up to €50,000 per fiscal year simply for using or possessing computer software that does not comply with regulations or that allows for the alteration of accounting records.
"I'm already generating PDFs" is not the same as complying
Many companies make the mistake of thinking that, just because they generate PDFs, they are already in compliance. The reality is that a PDF file or template does not guarantee the traceability required by the tax authorities: without a chained hash, without a verification QR code, and without a connection to the AEAT, that PDF is not Verifactu.
Don't settle for a quick fix: Take this opportunity to scale your business with Odoo
Faced with this scenario, companies have two options:
Buy a temporary "patch": a quick connector or basic software just to get by with billing.
Turning an obligation into an opportunity: Implement Odoo, a comprehensive solution that addresses legal invoicing and modernizes management across the entire company.
Native Support in Odoo 17 and 19
In recent versions of Odoo (starting with v17 and v19), Verifactu functionality is natively integrated. Say goodbye to custom developments and unstable patches.
360° Management on a Single Platform
When you implement Odoo, you don't just streamline your invoicing—you integrate sales, inventory, CRM, purchasing, and accounting into a single dashboard.
A phased transition without any last-minute surprises
Planning your implementation with Dynapps allows you to audit your processes, train your team, and migrate your data at your own pace, ensuring that on January 1, 2027, your company will be operating at full capacity without disrupting daily operations.
Get your business ready today, not in December
The technology market will experience a surge in demand as the deadline approaches. Companies that begin the migration early will be the ones to ensure a smooth, controlled, and optimized process.
At Dynapps, we help you assess the status of your current systems and develop an Odoo implementation plan tailored to your business.
Do you need the complete technical details?
If you want to check out the official calendar, the comparison with TicketBAI, or the step-by-step guide to setting up Verifactu in Odoo, we have a A Complete Guide to Verifactu with that level of detail.
Do you want to avoid last-minute rushes?
Discover how Odoo can transform your business. Contact our team of consultants and request a personalized demo.
Do you want to avoid last-minute rushes?
Discover how Odoo can transform your business. Contact our team of consultants and request a personalized demo.









