You will require the following documents to apply for a Citi Credit Card :- If you are a Salaried Employee A copy of your NRIC/passport. Latest original computerized pay slip. Or Tax Notice of Assessment or last 12 months CPF statement. If you are Self Employed A copy of your NRIC/passport. Last 2 years' Income Tax Notice of Assessment. Last 3 months' bank statements. If you are a Foreign National A copy of your passport and work permit (with minimum 6 months validity). A copy of utility/telephone bill or bank statement with your name and address. Income Tax Notice of Assessment and latest original computerized pay slip.