What is the validity of the Digital Signature certificate?

We need to separate the two processes involved:

1Renewal of the autenticacao.gov.pt portal signature

The signature must be renewed every 2 years. The first 2 years are free, and there is a €40 fee to the State for each subsequent renewal.

2Renewal of the authorization for InvoiceXpress to use your signature

This process is carried out within our application and must be done every 45 days. This allows you to keep renewing the authorization for us to retrieve your signature, keeping you in control of your personal data.