Compliance diagnosis
We audit the version and configuration of your invoicing software, identify the gaps against Verifactu and B2B electronic invoicing requirements, and produce a risk report prioritised by deadline.
Update, 6 October 2026. What now has a firm date is mandatory B2B e-invoicing: Order HAC/1028/2026, in force since 6 October 2026, has started the deadlines of Royal Decree 238/2026 (twelve months for businesses with a turnover above €8 million and twenty-four for everyone else, i.e. October 2027 and October 2028 by our calculation). Spain's Ministry of Finance has announced that it will postpone VeriFactu to October 2028 so that it converges with e-invoicing, but that change is not yet in the BOE (Official State Gazette): until it is published, the dates set by Royal Decree-Law 15/2025 remain in force (1 January 2027 for Corporate Income Tax filers and 1 July 2027 for everyone else). We will update this page once the regulation is published.
Since 2017 we have been adapting business management software to Spain's AEAT fiscal requirements. We prepare your ERP for Verifactu and mandatory B2B electronic invoicing well before the deadlines leave you with no margin.
At Summum Sistemas we adapt your ERP so it complies with Verifactu and B2B electronic invoicing without disrupting daily operations: we audit your invoicing software, configure the compliance module, test it against the AEAT environment and leave the process documented for your team.
Spain currently has two distinct obligations that are often confused: Verifactu and B2B electronic invoicing. Verifactu stems from Royal Decree 1007/2023 and requires invoicing software to record every invoice with a cryptographic chain and, if the company chooses, submit it to the AEAT in real time. Order HAC/1177/2024, published in the BOE on 28 October 2024, sets the definitive technical specifications. The adaptation deadlines have been extended twice: following Royal Decree 254/2025 and, subsequently, Royal Decree-Law 15/2025 of 2 December, invoicing software must be fully adapted before 1 January 2027 for companies subject to Corporate Income Tax, and before 1 July 2027 for all other businesses and self-employed individuals.
B2B electronic invoicing is a separate obligation, governed by Law 18/2022 (Crea y Crece) and implemented through Royal Decree 238/2026 of 25 March. It requires all invoices between businesses and professionals to be issued in a structured format compliant with European standard EN 16931 (UBL, CII, EDIFACT or Facturae). The recipient must also confirm the status of the invoice — accepted, rejected or paid — within a maximum of four calendar days (excluding Saturdays, Sundays and national public holidays). The deadlines are staggered, but they are not dates: the fourth final provision of Royal Decree 238/2026 counts them from the entry into force of the ministerial order developing the public platform — twelve months for companies with a turnover above eight million euros and twenty-four months for everyone else — and that order has not been published yet. The AEAT's public solution will be free of charge, but integrating it without breaking your ERP's internal workflows requires prior technical work. You can check the full breakdown of these deadlines and scenarios in our B2B electronic invoicing timeline.
At Summum Sistemas we analyse your current invoicing system — Odoo, Sage, Holded, Dynamics 365, a3ERP or a custom development — and carry out the full adaptation: Verifactu module configuration, QR code generation on each invoice, connection to the AEAT submission service, UBL or Facturae format mapping, and testing in the sandbox environment before going live. The goal is that when the mandatory date arrives your team feels no operational difference: we leave the configuration reviewed.
Verifactu and B2B electronic invoicing do not replace Facturae or FACe: those remain the mandatory channel for invoicing public administrations, with their own XML format and their own entry point. If your business also invoices public bodies, we coordinate that channel within the same adaptation project, without duplicating the work between the two fronts.
We audit the version and configuration of your invoicing software, identify the gaps against Verifactu and B2B electronic invoicing requirements, and produce a risk report prioritised by deadline.
We configure or upgrade the invoicing module: record chaining, hash generation, integration with the AEAT submission API, mapping of mandatory EN 16931 fields, and QR code generation on each document.
We run a full test cycle against the AEAT's official certification environment: issuance, submission, acknowledgement receipt, and payment status management. We correct any rejections before activating in production.
We activate the solution in the live environment with hands-on support, train the administrative team on the new issuance and reception workflows, and deliver operational documentation for autonomous day-to-day management.
You do not need to change platforms: we adapt the ERP or invoicing software you already use today, and if you also need to migrate versions we use the same project to do it.
Sage 200
Partner for Sage 200 and Sage X3. We activate the native Verifactu module, review invoice series and VAT numbers per company, and test the AEAT connection in the sandbox before going live.
Business Central
Microsoft partner focused on Iberian SMEs. In Business Central we configure the Spanish tax compliance module, map the EN 16931 format and leave AEAT submission integrated into your purchase and sales flows, without breaking your existing Microsoft 365 integrations.
TeamSystem (Factusol and Contasol)
Official TeamSystem Partner. We activate Verifactu in Factusol and Contasol, review record chaining and the QR code, and coordinate Nominasol so invoicing and payroll share the same compliance timeline.
Odoo
We implement and upgrade Odoo with the Verifactu module active from installation: chained hash, QR code and AEAT connection integrated into the standard invoicing flow, without custom development unless your operation requires it.
Holded
We implement Holded for SMEs looking for a lightweight cloud solution: we configure its invoicing module to comply with Verifactu and prepare the mapping to structured format for when the B2B obligation arrives.
a3ERP
We implement a3ERP (Wolters Kluwer) and migrate from earlier versions when needed: we review the electronic invoicing module, the AEAT connection and the tax series so they comply with Verifactu.
The operational detail: what we deliver as part of the work and what we keep alive afterwards.
Regulatory gap analysis
A detailed report on what your current software complies with and what it still lacks against Verifactu and RD 238/2026, with a prioritised roadmap.
Configured Verifactu module
Activation of cryptographic chaining, fingerprint and QR code generation, and connection to the AEAT's voluntary or mandatory submission service as applicable.
Structured-format issuance
Full invoice mapping to the EN 16931 standard in the appropriate syntax (UBL 2.1, Facturae 3.2.x, CII or EDIFACT) for mandatory B2B exchange.
Invoice status management
Implementation of the invoice lifecycle: acknowledgement, acceptance, rejection and payment confirmation within the deadlines required by RD 238/2026.
AEAT environment testing
Full validation cycle against the official sandbox, with error correction on rejections and generation of conformity evidence.
Training and documentation
A hands-on session for the finance team and an operational manual tailored to your ERP, so that daily management does not depend on external support.
Adapting to Verifactu and electronic invoicing touches several areas of the group: legal compliance is coordinated by Summum Consultoría, and intelligent data extraction from received invoices is handled by Summum IA.
If in addition to electronic invoicing you operate an e-commerce, the LSSI legal framework and commercial registry obligations must align with the requirements of RD 238/2026.
View service → iaOnce invoices are received in structured format, Summum IA's intelligent document processing automates their accounting entry and extracts data without manual intervention.
View service → sistemasAutomation with Power Platform orchestrates the complete flow: issuance, submission to the AEAT, status tracking and accounting reconciliation without touching the ERP manually.
View service →No. Verifactu (RD 1007/2023) is a requirement on invoicing software: it mandates that every invoice is recorded with a cryptographic chain and, optionally, submitted to the AEAT in real time. B2B electronic invoicing (Law 18/2022, implemented by RD 238/2026) requires that invoices between businesses be issued in a standard structured format (EN 16931) and that their payment statuses be managed. Both coexist and their technical implementation can overlap, but they respond to different regulations with different deadlines.
For Verifactu, the software adaptation deadline has been extended twice. Under Royal Decree-Law 15/2025 of 2 December, systems must be adapted before 1 January 2027 for companies subject to Corporate Income Tax, and before 1 July 2027 for all other businesses and self-employed individuals. For B2B electronic invoicing, Royal Decree 238/2026 sets no date: the obligation applies twelve months after the ministerial order developing the public platform comes into force if your annual turnover exceeds eight million euros, and twenty-four months after for everyone else. That order has not been published yet, so there is no enforceable date today. Non-compliance may result in penalties under the Anti-Fraud Law (Law 11/2021) for Verifactu, and specific fines under the Crea y Crece Law for electronic invoicing.
It depends on the version and the vendor. The most widely used ERPs in Spain — Sage, Holded, Odoo, Dynamics 365, a3ERP — already offer modules or updates for Verifactu. The key issue is not whether the module exists but whether it is correctly configured for your company: VAT number, invoice series, transaction types, and AEAT connection. At Summum Sistemas we verify this and, if there are gaps, we close them without changing platforms wherever possible.
The AEAT's public solution for electronic invoicing will be free of charge and available as an issuance and reception channel, but it does not manage accounting or the internal processes of your business. For most SMEs, the sensible approach is to keep the current ERP and connect it to the public solution or a private exchange platform. We assess which architecture is most appropriate for your volume and sector.
The project includes a verified go-live and a training session. If you need ongoing support — regulatory updates, changes to AEAT technical specifications, or extension to new invoice series — we cover this within our ERP maintenance contracts.
No, and it's worth knowing before buying anything: there is no official "AEAT approval" or certified software list from the Tax Agency. The legal mechanism set out in RD 1007/2023 is the manufacturer's declaration of conformity. So when a tool or platform advertises itself as an "approved program", what is behind it is that declaration, not an AEAT stamp. What is worth checking about your solution is the concrete detail: that it chains records by hash, that it issues the verification QR code, that it keeps records of issuance and cancellation, and that the manufacturer has issued its declaration of conformity.
No, they are three different things that are often mixed up. Facturae is the Spanish XML format for electronic invoicing, and it is what the Administration requires: invoices are submitted through the relevant general entry point, and FACe is the one used by the General State Administration, to which many regional and local authorities are attached, although others have their own, such as e-FACT in Catalonia. This obligation has applied since 15 January 2015 for companies and other entities under Article 4 of Law 25/2013; a self-employed person may continue invoicing the Administration on paper unless it requires otherwise, and each administration may exclude invoices of up to 5,000 euros. Verifactu is something else: it governs how your invoicing system generates and keeps records, regardless of who you invoice. And mandatory B2B electronic invoicing is a third front, with its own timeline, still pending the ministerial order. A small business may need all three at once, and an accountancy firm invoicing on behalf of multiple companies needs them for each company it manages.