VeriFactu is Spain’s new, government-backed electronic invoicing framework designed to make invoices traceable, tamper-proof and visible to the tax agency (Agencia Tributaria, AEAT) in near real time. The system standardizes how billing software generates invoices (including a QR/hash), how those invoice records are sent to AEAT, and how they must be stored so they cannot be silently altered. It is part of the Anti-Fraud Law reforms that aim to reduce tax evasion and improve transparency across the economy.

Why this matters to you

If you run a Spanish company or work as an autónomo (self-employed), VeriFactu will change at least three everyday tasks: issuing invoices, keeping audit-ready records, and integrating your billing software with AEAT reporting. That can improve bookkeeping and make VAT and tax filings simpler, but it also means you must use certified or AEAT-compatible invoicing software and follow stricter rules when correcting or cancelling invoices.

Key compliance dates (updated)

The Spanish government postponed the original timetable. Under the latest official update, the obligation is now staggered:

• Jan. 1, 2027—mandatory for companies subject to Corporation Tax (large companies and many sociedades).

• July 1, 2027—mandatory for the rest, including the majority of freelancers and small businesses.

These dates replace earlier 2026 timetables.

What happens if you don’t comply

Sanctions can be material. Penalties reported in legal and fiscal commentary range from several thousand euros for incorrect invoicing to maximum administrative fines that can reach tens of thousands—and vendor penalties are larger if software providers fail to meet certification rules.

Fines could go up to 50,000€ per fiscal year for non-compliant users and substantially larger penalties for vendors who sell non-compliant products. Noncompliance can also lead to rejected invoices, audits, and operational disruption (for example: inability to issue tax-valid invoices).

Who provides VeriFactu-ready software

There are two basic routes: use the (basic) AEAT tool or migrate to a commercial billing/ERP vendor that is already VeriFactu-ready. Popular and widely referenced providers include Holded, Quipu, Billin, Factusol, Contasimple and other specialized fintech vendors such as Fiskaly and Flick Network that offer real-time submission and Enterprise Resource Planning (ERP) integrations—software that manages your company's internal, back-office operations like accounting, HR, and inventory. Market lists and vendor comparisons are available and being updated as vendors finish homologation.

Estimated costs to adapt (what to budget)

Costs vary widely depending on your business size, current systems, and whether you need ERP integration or simple invoicing:

• Microbusinesses or sole traders: Free trials to around 30€ per month for cloud billing tools. Free basic AEAT tools exist but lacks features like accounting integration. You can check out their official user guide here.

• Small businesses: Installing a full invoicing system with onboarding typically requires a one-off 300€-2,000€ setup fee, plus 30€–100€ in monthly subscription costs.

• Medium and large companies: Adapting an existing ERP can cost several thousand to tens of thousands of euros, depending on customization, testing and training needs.

While subsidies through Kit Digital and Acelera Pyme can reduce the financial burden for smaller firms, relying solely on AEAT’s free solution may increase hidden labor costs due to manual workflows and limited automation.

How to implement VeriFactu in practical steps

1. Audit your invoicing process. Identify your current software, manual steps and correction workflow.

   
   

2. Choose your approach: AEAT’s free tool, a certified cloud solution or an ERP integration.

   
   

3. Request proof of compliance. Ask vendors for certification, expected update timelines and service-level agreements for transmission errors.

   
   

4. Test before going live. Run a pilot to confirm QR/hash generation, AEAT submissions and how credit notes are handled.

   
   

5. Train your team. Ensure staff know how to manage corrections, since VeriFactu often requires issuing a rectifying invoice rather than editing the original.

   
   

6. Apply for subsidies. Document costs early to meet requirements for public aid programs.

   
   

Key questions to ask a software provider

• Are you homologated or certified for VeriFactu?

• How do you generate the QR/hash and what data is sent to AEAT?

• What happens if a transmission fails?

• What are your setup, subscription and per-invoice fees?

• Do you support ERP or accounting integration and correction workflows?

Practical tips for Spanish small-business owners

• Start early. Even with the 2027 delay, integration and training take time.

• Keep thorough logs. VeriFactu is audit-focused; strong recordkeeping reduces risk.

• Consider outsourcing. If you issue few invoices, a simple cloud provider may be cheaper than adapting a full ERP.

Transitioning to new invoicing rules takes planning, investment and time. The extended 2027 deadline gives businesses a valuable opportunity to compare vendors, run pilots, and secure subsidies so they can transition smoothly and stay compliant when the rules become mandatory.