What are the necessary documents to open an account? Identification Documents: Identification Document (valid) - Portuguese Identiﬁcation Document or Residency authorization or Passport or National Identity Card. NIF (Tax Identification Number) (valid) - Portuguese Identiﬁcation Document or NIF Card or Tax Payer’s central registration. Proof of address (12 months): National: Drivers License or Tax reimbursement statement or Water/electricity/gas bill Abroad: Taxes liquidation issued by the ﬁscal authority of the country of residency or Document issued by the consulate. Proof of employment situation (3 months validity): Employee: Pay slip or Employment proof or Work contract. Independent worker: "Green receipts"or Start of economic activity statement or Declaration from the Client supported by a card issued by the repective professional entity. Self-employed: Commercial Registry certiﬁcate or Company Registration. Unemployed: Unemployment statement (Employment Center enrolment) or Economic Situation Proof, issued by the Town Council for unemployed people that are not enroled in the Employment Center. Student: Student ID or Enrolment proof or University attendance certiﬁcate.