Fiscal subject related
The Finance Portal has introduced new rules for passwords to enhance security when accessing services and personal data. The main objective is to ensure stronger protection for users.
Changes are:
- Issuing passwords by letter: new passwords will be issued via letter. Upon receiving the letter, users must change their Internet Access Password the first time they log into the Tax Portal.
- Minimum complexity criteria: The new password must be at least 8 characters long and include numbers, upper- and lower-case letters, and special characters.
These rules apply only to new registrations on the tax portal and to users who recover or change their password. Current passwords for existing taxpayers on the tax portal will remain valid.
More information about passwords is available in the area: “Access to the Finance Portal—Authentication and Passwords.”
Other news from Portugal
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
Understanding of errors when communicating the billing series to the tax authority in Portugal

Communicating billing series to the Portuguese Tax Authority often results in errors such as incorrect system time (Error 1110) or invalid credentials (Error 1199). Common issues also include inadequate permissions (Error 1200), unregistered subusers (Error 102), and invalid Tax Identification Numbers (Errors 113 and 114). Read more