Fiscal subject related
In the final days of 2024, the Portuguese Parliament approved the State Budget for 2025, introducing significant changes to invoicing requirements. Under the new legislation, PDF invoices will continue to be accepted and treated as electronic invoices for all tax purposes until December 31, 2025. This was announced and is now finally confirmed. Starting January 2026, companies will need to use a qualified electronic signature for their PDF or XML invoices to ensure they are legally recognized. This update is introduced to streamline the invoicing process, enhance digitalisation, and improve the security and authenticity of invoices, aligning with EU standards for electronic invoicing.
Other news from Portugal
VIDA regulation adopted—what does that mean for business?
The EU adopted the VAT in the Digital Age (ViDA) package on March 11, 2025, introducing major changes to the VAT system starting January 1, 2027. Key reforms include mandatory digital VAT reporting by 2030, new VAT collection rules for online platforms, and expanded One-Stop Shop (OSS) registration to simplify cross-border compliance. Additional measures, such as mandatory e-invoicing, phasing out... Read more
New document was uploaded: S4F backoffice patch
S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Read more
Slovenia: EU Targets Unsafe E-Commerce Imports with New Measures
The European Commission is tightening regulations on e-commerce imports to address the surge of unsafe and counterfeit goods, particularly from China, by reforming customs rules and increasing product safety checks. Key measures include removing the duty exemption for low-value parcels, introducing a potential customs fee, establishing priority control areas, and launching an EU-wide product safet... Read more
New document was uploaded: S4F backoffice patch
S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Read more
New document was uploaded: S4F backoffice installer
S4F backoffice installer is intended for users who are installing the software for the first time. Please make sure to obtain latest version of installer and to apply all subsequent patches that are released subsequently. This package contains instruction, release notes, changelog and software packages required for deployment of this software component. This version of the Backoffice installer supports the following countries: Austria, Bulgaria, Croatia, France, Italy, Poland, Portugal, Romania, Slovakia and Slovenia. Read more
A security alert from the Portuguese Tax Administration

The Portuguese Tax and Customs Authority (AT) has issued a warning about fraudulent emails impersonating the agency, sent via WeTransfer, urging recipients to click on malicious links. Taxpayers are advised to ignore these messages, as they are designed to redirect users to harmful websites. The Tax and Customs Authority of Portugal (AT) published the notice regarding the fraudulent message that a... Read more
New document was uploaded: S4F backoffice patch
S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Read more