Contact the Tax and Customs Authority online via e-balcão

The e-balcão is an electronic service available on the Portal das Finanças. It allows you to submit questions and resolve issues with the Tax and Customs Authority (Autoridade Tributária e Aduaneira - AT) without visiting a physical office.

How to submit a question

Log in to Portal das Finanças, navigate to the support section, and complete the required form to submit your question.