Chained SHA-256 hash, XAdES signature, mandatory QR and automated AEAT submission per Spain's RD 1007/2023 and Order HAC/1177/2024. Connect your SAP, Sage, A3, Holded or Dynamics in 48 hours without migrating the ERP.
Updated: 14 May 2026 Reviewed by Dokuflex Compliance team
Dokuflex Compliance team — AEAT-approved for certified digitisation (Doku4Invoices, Resolution of 24 October 2007), processing invoices for clients across banking, healthcare and retail. Contact: compliance@dokuflex.com.
RD 254/2025 is Spain's Royal Decree that postponed the original 2026 dates set by RD 1007/2023. These are the current dates according to the calendar updated by Spain's tax authority (AEAT):
Software vendors may only commercialise Billing Information Systems (SIF) certified under VeriFactu rules.
Recommended deadline for obligated taxpayers to choose mode: VeriFactu (real-time submission) or non-VeriFactu (local register with XAdES signature).
Mandatory for entities subject to Spanish Corporate Tax (sociedades mercantiles and other legal persons liable for IS).
Mandatory for self-employed and the rest of obligated taxpayers (individuals on direct estimation, professionals and SMEs not subject to Corporate Tax).
Companies already compliant with VeriFactu on Dokuflex
Be compliant in 48 hours. No project, no consultants.
Create your account in 30 seconds. Register your tax ID and electronic certificate.
Native connector for SAP, Sage, Holded, A3, Dynamics. Within 48 hours you're submitting.
Every invoice is certified, signed, QR-stamped and sent to AEAT. You do nothing.
Dokuflex works as a VeriFactu adapter on top of your existing management system. It reads invoice data from your ERP via CSV, XML or API connectors, generates the invoice record with chained SHA-256 hash, XAdES signature and tax QR, and submits it to Spain's AEAT. No need to switch software or retrain the finance team.
CSV/XML/API connector · without touching your system
CSV/XML/API connector · without touching your system
CSV/XML/API connector · without touching your system
CSV/XML/API connector · without touching your system
CSV/XML/API connector · without touching your system
CSV/XML/API connector · without touching your system
CSV/XML/API connector · without touching your system
CSV/XML/API connector · without touching your system
Your ERP not listed? Dokuflex also integrates with custom systems via REST API or CSV ingestion. Talk to a specialist.
RD 1007/2023 defines two compliance modes. The choice depends on invoicing volume, connectivity and the taxpayer's profile.
| Feature | VeriFactu mode | Non-VeriFactu mode |
|---|---|---|
| Real-time AEAT submission | Yes | No · local register kept by the taxpayer |
| Submission frequency | Immediate after each invoice is issued | On AEAT request |
| Chained SHA-256 hash | Yes | Yes |
| XAdES electronic signature | Optional | Mandatory |
| Mandatory tax QR | Yes | Yes |
| Retention period | 10 years | 10 years |
| Recommended for | Any invoicing volume with stable connectivity | Very high volumes or environments with limited connectivity |
Dokuflex lets you switch between both modes without migration. Start in VeriFactu mode and switch to non-VeriFactu (or vice versa) from the console — without touching your ERP or retraining the team.
Everything the regulation requires, automated. Zero risk of penalties and no changes to how you work.
Generated with chained hashing and XAdES signature. Impossible to modify without leaving a trace. Exactly what the tax authority requires.
Real-time or batched submission based on your volume. If there's a connection error, it retries automatically.
Every PDF invoice and receipt carries the required VeriFactu QR code. Added automatically.
All invoices preserved with qualified time-stamping. Always available if the tax authority runs an inspection.
Generate full tax reports in the exact format the tax authority requests with one click. No searching, no collecting anything.
Ready-to-use connectors for SAP, Sage, A3, Holded and Dynamics. Without changing your current software, without disruptions.
"We achieved VeriFactu compliance without touching SAP. The tax team had it ready before the deadline arrived."
1 January 2027 for entities subject to Spanish Corporate Tax, 1 July 2027 for self-employed and SMEs. Start now with a pilot and avoid scrambling in the last quarter before the deadline.
Each invoice gets an SHA-256 hash, the mandatory QR code and a chained, tamper-proof register, with automatic submission to Spain's AEAT in VeriFactu or non-VeriFactu mode as preferred.
Ready-to-use connectors with the main ERPs and billing software. Comply with VeriFactu without changing your current system or retraining the finance team. Live in 24-48 hours.
Dokuflex connects to your ERP with no changes. Native connectors for SAP, Sage, A3, Holded, Dynamics and APIs for custom systems. You comply without touching your software.
Start free, no credit card. Plans from EUR 19/month based on invoice volume. Includes 10-year archive at no extra cost.
Automatic retries with exponential backoff. If AEAT is down, Dokuflex stores and resends when it's back. Nothing is lost, nothing is duplicated.
Connection to your ERP in 24-48 hours. Invoices submitted to AEAT the same day. No endless projects, no consultants.
Automatically on every PDF invoice and receipt. Meets the exact format required by the regulation without any effort on your part.
Per Spain's RD 254/2025, which postponed the original calendar: 1 January 2027 for entities subject to Corporate Tax and 1 July 2027 for self-employed and the rest of obligated taxpayers. Since 29 July 2025 software vendors may only commercialise certified billing systems.
No. Dokuflex works as a VeriFactu adapter on top of SAP, Sage 50/200/X3, A3 (Wolters Kluwer), Holded, Dynamics 365, Navision, Odoo and custom ERPs via CSV, XML or API connectors. There is no need to migrate or touch the current system.
Spain's Law 11/2021 (art. 201 bis LGT) sets fines of up to EUR 50,000 per fiscal year for taxpayers using non-certified billing software, and up to 2 percent of invoiced amounts in other scenarios. General guidance based on official sources: for case-specific scenarios, consult your tax advisor.
SII (Immediate Supply of Information) is the obligation to report VAT ledgers in near real time, mainly applicable to large companies and VAT groups. VeriFactu is the chained invoice-record system with SHA-256 hash, tax QR and submission to AEAT, defined by RD 1007/2023. They can coexist and serve different purposes.
Connect your ERP and submit to AEAT in 48 hours. No credit card, without touching your current software.