Complying with the Ley Antifraude (Anti-Fraud Law) and Royal Decree 1007/2023 is mandatory for companies, self-employed individuals, and SMEs, but the technical complexity can be overwhelming: digital signatures, QR codes, chained hashes, and real-time submission to the Spanish Tax Agency (AEAT) are just some of the requirements. Trowel, with its Verifactu integration and advanced AI-powered document scanning capabilities, simplifies the entire process — automating invoicing and ensuring your company stays compliant without the risk of penalties or manual errors. In this guide we explain how Verifactu works and how Trowel can help you, its advantages, how it affects your daily operations, and how document scanning can speed up invoice and delivery-note management.
1. What is Verifactu and how can it help you?
Verifactu is the official AEAT system that guarantees:
- Integrity: invoices cannot be modified after they are issued.
- Authenticity: every record is digitally signed.
- Traceability: each invoice includes a QR code and chained hash.
With Trowel, every invoice generated automatically produces a secure, verifiable record. Additionally, if you choose, it can be sent directly to the AEAT at the moment of issuance, reducing the risk of non-compliance.
2. Key technical features
- Immediate, secure registration: each invoice has a unique identifier and chained hash.
- Immutability: once issued, an invoice cannot be edited.
- Automated submission to the AEAT (optional): the system can relay data in real time.
- Cancellation management: corrective invoices preserve complete traceability.
- Certified software: TrowelApp meets AEAT standards and the Responsible Declaration requirements.
3. AI-powered document scanning
Trowel includes a document scanning feature that allows you to digitize invoices, delivery notes, and receipts, processing them automatically via AI-enhanced OCR and generating records ready for validation within the system quickly.
How it works
- Go to: Billing → Document Scanner.
- Upload or scan your document.
- The AI identifies the key data and converts it into valid records in Trowel.
Document types
- Unknown: the default value when creating a document; must be classified manually or through OCR processing.
- Invoice: expense invoices.
- Delivery notes
- Receipts
This feature reduces manual errors and speeds up the preparation of invoices for submission or registration within Verifactu.
Verifactu on the job site with Trowel: what you need to know
In this event, we answered key questions about what Verifactu actually is, how it differs from electronic invoicing, and what construction companies need to do to comply with the new regulations.
You can watch the full recording by filling out the form below.
4. How Verifactu and document scanning affect your daily operations
|
Area |
Impact with Trowel + Verifactu + AI Scanning |
|
Invoice issuance |
Automatic, secure registration with optional submission to the AEAT |
|
Modifications |
Strict immutability; issued invoices cannot be edited |
|
Cancellations |
Corrective invoices that maintain full traceability |
|
Security |
QR code, hash, and digital signature guarantee complete authenticity |
|
Digitization |
AI scanning reduces manual tasks and transcription errors |
|
Legal compliance |
Automatic updates when regulations change |
5. Legal deadlines and regulations
The authorities extended the deadlines for adoption, giving companies more time to implement the system. Remember: don't leave implementation until the last moment.
Companies, corporations, and legal entities The deadline is extended to January 1, 2027
- Limited liability companies (SL)
- Public limited companies (SA)
- Other legal entities
Self-employed individuals and independent professionals The deadline is extended to July 1, 2027
- Self-employed individuals
- Independent professionals
Trowel is already prepared to meet these deadlines, preventing the risk of penalties that can exceed €50,000 per fiscal year.
Download the updated Verifactu guide for construction companies 2026.
Fill out the form below and discover everything you need to know with our Updated Verifactu Guide for Construction Companies 2026.
6. Verifactu vs. traditional electronic invoicing
- Electronic invoice: a digital document that replaces paper and ensures authenticity and legibility.
- Verifactu: a mandatory system that registers each invoice with secure, traceable technical protocols (QR code, hash, and digital signature).
While they are complementary, Verifactu requires stricter standards and advanced technical verification, ensuring a much higher level of security and control.
7. Benefits for your company
- Automatic compliance with tax regulations.
- Complete transparency and traceability of all transactions.
- Reduced risk of fraud and accounting errors.
- AI digitization and OCR that speeds up document management.
- Time savings through automation of manual tasks.
- Direct access to official records from the AEAT.
- Avoidance of serious financial penalties.
8. What you should do
If you are evaluating tools to comply with the Anti-Fraud Law:
- Consider activating Verifactu mode for automatic submission.
- Use Proformas to review invoices before final issuance.
- Take advantage of AI scanning to digitize documents and reduce errors.
- In case of error, use a corrective invoice instead of modifying the issued invoice.
Trowel simplifies these steps, reducing the learning curve and ensuring legal compliance without complications.
VeriFactu implementation challenges on site (and how to overcome them)
Beyond the theory, rolling out VeriFactu in a construction company raises very concrete practical challenges. These are the main ones and how to tackle them:
- Integration with mixed systems. Many construction firms combine an accounting ERP with basic on-site tools. Unifying them to issue verifiable invoices in real time means reviewing APIs, XML formats and response times. Key: first audit your flow (issuance, validation, submission and archiving) and define clear integration points.
- Document flow management. Delivery notes, work reports and partial certifications must be linked to their invoice and sent to the AEAT with full traceability. Key: centralize site documentation so every invoice stays tied to its supporting documents.
- Team training. Issuance, signing and QR verification add new fields and controls. Key: train the administrative team (issuance and submission) and the technical office (delivery notes and certifications) separately.
- Coordination with subcontractors and suppliers. The whole chain must meet the VeriFactu standard. Key: check well in advance that your partners also have compatible systems.
Recommendation: roll out in phases. Start with a small project, issue and submit real invoices, fix errors, and then scale to the rest of the company. This way you avoid penalties from day one and strengthen documentary control without slowing operations.
Conclusion
If your company is looking for automatic compliance, total security, and efficiency, Trowel with Verifactu and AI document scanning is the ideal solution. Automate the digitization and registration of invoices, reduce risks, and ensure your billing is always ready for AEAT inspections.
