Portugal proposes delaying e-invoicing signature requirement until 2028

Portugal has proposed extending the acceptance of PDF invoices without qualified electronic signatures until the end of 2027. Here's the proposed timeline and what it means for businesses.

Carolina Porto da Silva
Carolina Porto da Silva
Tax Technology Specialist
Published
October 22, 2026
Portugal proposes delaying e-invoicing signature requirement until 2028Portugal proposes delaying e-invoicing signature requirement until 2028

The Portuguese government has proposed another delay to the requirement for qualified electronic signatures (QES) on e-invoices. Under the new draft 2027 State Budget Law, PDF invoices without a QES will continue to be accepted until the end of 2027.

When would Portugal's e-invoicing signature requirement take effect?

  • The requirement for e-invoices to include a QES was previously scheduled to take effect on January 1, 2027.
  • The new proposal extends the transitional regime, allowing invoices in PDF format without QES to remain valid until December 31, 2027.
  • The mandatory QES requirement would now apply from January 1, 2028, subject to approval of the final budget law.

What would the QES postponement mean for businesses in Portugal?

This draft postponement offers businesses in Portugal additional time to prepare for the technical and operational requirements associated with using QES for e-invoicing.

What’s covered
Learn about related Fonoa solutions

SYNAPSE 2026: Where Tax Meets Intelligence

Date: May 12, 2026 — 9:00 AM GMT
Location: San Francisco, US

Join your peers at Fonoa’s US annual conference. A day for tax, payments, and finance leaders to learn and network, in San Francisco.

Register now →

SYNAPSE networking photo 1 SYNAPSE networking photo 2 SYNAPSE networking photo 3
Carolina Porto da Silva

Carolina Porto da Silva

Tax Technology Specialist

Carolina is a Tax Technology Specialist with experience in e-invoicing and digital tax reporting. At Fonoa, she works on ensuring global compliance across invoicing and reporting products, helping to turn complex regulatory requirements into scalable, automated solutions.

Privacy Policy Cookie Policy