To combat smuggling and other customs offences and fraud; detect and seize goods in case of violation of laws; conduct investigation relating to commercial frauds and/or trade based money laundering and other customs violations; arrest persons involved in customs offences.
To prevent trafficking of (i) narcotic drugs, psychotropic substances and their precursors, (ii) fake currency notes, (iii) goods covered under Convention on International Trade in Endangered Species (CITES), (iv) goods infringing Intellectual Property Rights (IPR), (v) objects of art and antiquity which are of significant historical, cultural and archaeological value, and (vi)  poisonous goods and substances harmful to environment or to public health.
To collect information on smuggling under customs laws, keep and maintain profiles of suspects; co-ordinate and maintain liaison with counterpart national and international intelligence agencies mainly through exchange of information and mutual assistance.
To initiate, direct, supervise commercial and industrial espionage; to represent Bangladesh interests in international forums, organize seminars, workshops and symposium on the overall economic security and its threats.
To prepare intelligence reports for NBR or other relevant agencies regarding any organized crime or anomalies occurring at different customs houses, stations or any other areas or functions with a view to soliciting policy intervention or taking appropriate administrative or other legal measures; any other duty as assigned by the NBR.