Declaration signed by the applicant himself, in which he declares under oath for what support, benefit, or specific purpose he is requesting the NISS, pursuant to Article 99 of Law No. 4/2007.

Document issued by the Tax Authority proving the start of activity as a self-employed worker in Portugal

Deve anexar pelo menos 3 faturas ou recibo verde já emitidos, após o início de atividade

Mandatory document for citizens of third countries outside the European Union and outside the CPLP. You must attach a valid visa or residence permit/authorization, or official proof of the respective application, proving your legal stay in Portugal. Simply scheduling an appointment at AIMA without a prior visa is not accepted and usually leads to the rejection of the NISS application.

Mandatory document for citizens of CPLP countries. You must attach your CPLP visa, CPLP Grant Certificate, or valid proof of application. AIMA appointments without a CPLP visa or certificate are not considered valid and usually result in the rejection of the NISS application.