Lisbon, July 9, 2025 (Lusa) - Starting Wednesday, the tax office (AT) portal will have a reinforced authentication system for taxpayers to access their personal page by sending an SMS with a verification code.

In a note sent to Lusa, the Ministry of Finance explained that reinforced authentication requires two-factor verification.

The feature, which taxpayers can opt into, “adds an extra layer of protection when accessing the taxpayer’s reserved area on the Finance Portal,” seeking to ensure “authorised access only,” the Ministry, which oversees the AT said.

The option will soon become available to all taxpayers. “Taxpayers without business activity can already sign up for two-factor authentication, and the ministry will gradually extend the service to individual taxpayers with business activity and to legal entities,” the ministry said.

For a citizen to sign up for two-factor authentication, “they must have a telephone number registered and confirmed with the AT”.

After signing up, “whenever they log in to the Finance Portal with their tax number and access password, the AT will send a unique verification code by SMS, which they will have to enter to access their reserved area”, the ministry added.

Currently, you can access your area by entering your tax number and access code, or by authenticating with your Citizen Card or Digital Mobile Key.

In the latter case, in addition to entering the code already associated with this feature, you must also enter the code sent by SMS to the associated mobile phone, which already implies two-factor authentication.

PCT/ADB // ADB.

Lusa