How to change your Portal das Finanças password

Who this is for

• You are accessing Portal das Finanças for the first time using your temporary password
• You are resetting your password
• You are updating the permanent password you’ve previously set

Background

• In January 2025, the Portuguese tax authorities implemented new rules for accessing Portal das Finanças.
• Your temporary password must be changed before accessing any other sections of the portal. The temporary password remains valid unless changed.
• Existing passwords of registered NIF holders remain valid unless changed or reset.

Step 1: Log in to Portal das Finanças

1. Go to https://www.portaldasfinancas.gov.pt/

2. Click on the Iniciar Sessão button at the top right corner of the page.

3. Click on the NIF tab.

4. Enter your NIF number. Where can I find my NIF number?

5. Enter your password. When will I receive my password?

6. Click the Autenticar button.

Step 2: Navigate to the Change Access Data page

If you're updating your temporary password, you will likely be automatically redirected to the "Change Access Data" page upon first login. In this case, you can skip this step and proceed directly to Step 3.

1. Using the search bar at the top of the page, search for the keyword alterar dados de acesso

2. Find “Alterar Dados de Acesso” and click Aceder

3. You will be prompted to re-enter your password. Click on the NIF tab, enter your password, and click the Autenticar button.

Step 3: Change your password

1. Click the checkbox beside Alterar Senha.

2. Enter your new password in both the form fields. Ensure your new password meets the following criteria:

• At least 8 characters long
• Contains at least one number
• Includes one uppercase letter
• Includes one lowercase letter
• Includes one special character (e.g., #, $, !, &, etc.)

3. Click the Alterar button.

Congratulations, you've successfully changed your password! 🎉