What is the SAF‑T invoicing file and what is the usual deadline?
The SAF‑T (PT) invoicing file is a monthly tax obligation consisting of the electronic transmission of companies’ invoicing data to the Portuguese Tax Authority.
As a general rule, this communication must be carried out by the 5th day of the month following the issuance of the invoices.
This obligation applies to most companies and sole traders operating in Portugal and is essential for tax control and automatic data cross‑checking by the Tax Authority.
Exceptional extension of the deadline for May 2026
For the April 2026 invoicing period, the deadline has been extended until 08 May 2026, allowing additional time beyond the usual legal deadline.
This type of extension is not unprecedented and has occurred in specific situations, particularly when there are operational constraints, public holidays, or periods with fewer working days, as recently happened in the context of Easter.
The decision was formalised through a governmental order, allowing submission without penalties or additional charges, provided the new deadline is respected.
What is covered by this extension?
The extension applies to:
- Submission of invoices;
- Submission of fiscally relevant documents;
- Submission of a declaration of no invoicing activity.
In other words, all obligations related to the monthly submission of the SAF‑T file are covered by this new deadline.
Impact for companies and accountants
This extension brings several practical implications:
- Reduced risk of non‑compliance, avoiding fines ranging from €50 to €1,500;
- Greater flexibility in internal organisation, especially during periods of high tax workload;
- Opportunity for more thorough data validation, reducing submission errors;
- Improved management of human and operational resources within financial departments.
Nevertheless, it is important to note that this extension does not affect other monthly tax obligations, which must continue to be met within their usual deadlines.
Conclusion
The extension of the deadline for submitting the April 2026 SAF‑T invoicing file until 08 May represents a relevant measure for companies and accounting professionals in Portugal.
Despite the increased flexibility, organisations should maintain good tax planning practices and avoid leaving submission until the last days, ensuring accuracy and compliance in the reported information.
How Nominaurea Can Help
Nominaurea supports companies and entrepreneurs in the efficient management of their tax obligations, ensuring:
- Preparation and validation of the SAF‑T file;
- Strict compliance with tax deadlines;
- Continuous monitoring of legislative changes;
- Personalised and strategic tax consultancy.
With a close and results‑oriented approach, we provide security and peace of mind in meeting your tax responsibilities.
📄 Official order:
https://www.occ.pt/sites/default/files/public/2026-04/Despacho_SEAF.pdf
