Spain has confirmed the final timeline for mandatory B2B e-invoicing. With Order HAC/1028/2026 now published, larger businesses must comply from 6 October 2027, followed by the remaining scope from 6 October 2028.
Spain has published Order HAC/1028/2026, setting out the technical and operational rules for the public e-invoicing solution managed by the Spanish tax authority, AEAT. The Order was published on 5 October 2026 and enters into force on 6 October 2026.
This is an important milestone because Spain’s implementation timeline is linked to the entry into force of the Ministerial Order. The previously expected October 2027 and October 2028 timelines are now confirmed as fixed deadlines.
Spain confirms the final e-invoicing timeline
Mandatory B2B e-invoicing in Spain will apply in two phases:
- 6 October 2027: businesses and professionals whose turnover exceeded EUR 8 million in the previous calendar year.
- 6 October 2028: the remaining businesses and professionals within scope.
This gives larger organisations one year to move from regulatory monitoring to implementation. For companies with Spanish entities, customers or invoice flows, the mandate is no longer a future development. The practical countdown has started.
From royal decree to operational rules
The legal framework for Spain’s B2B e-invoicing mandate was already introduced through Royal Decree 238/2026. As explained in our earlier update on Spain’s mandatory e-invoicing model for domestic B2B transactions, the Spanish system combines private platforms with AEAT’s public solution.
Order HAC/1028/2026 now confirms the operational rules for that public solution. Businesses will be able to issue and receive B2B e-invoices through private platforms, AEAT’s public solution, or both.
When invoices are issued outside the public solution, a faithful electronic copy must also be submitted to AEAT’s public solution in UBL format. This builds on the technical direction already outlined in Spain’s earlier SPFE technical specifications.
Invoice lifecycle reporting becomes part of compliance
Spain’s mandate is not limited to sending and receiving structured invoices. The Order also defines how invoice status and payment information must be communicated.
This includes payment due dates, full-payment dates, rejection, collection and non-payment. It also covers procedures for submission, validation, error correction and invoice retrieval.
That confirms the direction discussed in our previous update on SPFE, UBL 2.5 and invoice lifecycle reporting. For finance teams, compliance will depend on more than format readiness. Invoice status, payment data and process events will also need to be captured reliably across ERP, accounts payable and accounts receivable workflows.
What this means for businesses operating in Spain
Companies should now assess how the confirmed Spanish timeline affects their finance and IT roadmap. The key question is not only whether invoices can be created in the right format, but whether the full invoice lifecycle can be managed in a controlled and auditable way.
This is especially relevant for international organisations that are already preparing for multiple European e-invoicing and e-reporting requirements. Spain adds another country-specific model to a broader shift towards structured invoice data, lifecycle reporting and cross-country compliance. For the latest country overview, visit the Spain e-invoicing mandate page or the broader European e-invoicing mandate overview.
Changes companies need to implement
- Determine which Spanish entities, customers and invoice flows are in scope.
- Decide whether invoices will be exchanged through private platforms, AEAT’s public solution, or both.
- Assess whether ERP and finance systems can support the required structured invoice data.
- Prepare for invoice lifecycle and payment status reporting.
- Review how invoice rejection, collection and non-payment events are captured internally.
- Align Spain with the broader European e-invoicing and e-reporting roadmap.
