schedule
2019: Public institutions in Portugal have been obliged to receive and process electronic invoices.
2021: Large companies must issue electronic invoices to public contracting authorities.
2022: Small and micro-enterprises had to issue electronic invoices to public contracting authorities.
January 2026: Planned introduction of the general obligation for the B2B sector.
applicability
The e-invoice primarily covers Business-to-Government (B2G) and Business to Business (B2B) transactions.
format
UBL 2.1 CIUS-PT and CEFACT CIUS-PT-Format.
Electronic signature
An electronic signature is mandatory.
Archiving
E-invoices must 10 years long be archived.
More information about e-invoicing in Portugal
https://www.espap.gov.pt/FrontEnd/Paginas/Areas/SP_Fin/SP_Fin_FEAP_tpl_1.aspx
https://www.feap.gov.pt/Paginas/Default.aspx

GOpus® eInvoice
Our GOpus® eInvoice The solution can be integrated into SAP ERP and SAP S/4HANA and supports the creation of outgoing e-invoices in all international country formats. In this way, all your invoice contents can be created and sent between different international invoice issuers and recipients directly from your SAP system and all invoice documents can be archived in comprehensive monitoring. Integration into the SAP modules SD, FI, IS-H, IS-U and SAP Service Invoicing is possible. Further integrations are available on request.
Do you have further questions about our solution or would you like to obtain more detailed information about the e-invoicing regulations in Portugal?
We will be happy to personally assist you with any further questions you may have about our solution and the regulations.